IMPROVEMENTS IN OR RELATING TO A SUPPORTIVE TEXTILE This invention relates to a method of constructing a supportive textile, a method of forming a textile element for use as a structural support component in a garment and a textile element for use as a structural support component in a garment. It also relates to a method of forming a supportive textile element having a desired shape. The invention also relates to a supportive textile element having a desired shape and to a supportive garment including such a supportive textile element. It is often necessary or desirable for a textile to have a support or strengthening functionality. For example, a textile garment may be required to provide support to a portion of the wearer’s body (such as a bra providing support to a wearer’s breasts). It is also often necessary for such support or strengthening functionality to define a particular shape within the textile, especially a non-linear shape. For example, it is desirable to have a support portion within a textile garment that is shaped in accordance with a body part for which it is providing support (e.g. under the breasts or buttocks in an undergarment). There are also non-garment related fabrics which may require a support or strengthening functionality defining a particular shape, such as “walls” or a door of a tent. According to a first aspect of the invention there is provided a method of constructing a supportive textile comprising the steps of: providing at least one structural support component in the form of a textile element including a fabric strip folded about a plastics core, the textile element further including an adhesive tape adhered to an outer surface of the textile element so as to present an adhesive layer facing outwardly from an outer surface of the textile element; locating the or each structural support component in a correspondingly shaped aperture formed in a jig so that the adhesive layer is exposed; positioning a textile carrier element relative to the or each structural support component so as to cover the adhesive layer on the or each structural support component in a predetermined configuration; applying heat and pressure to the aligned textile carrier element and the one or more structural support component so as to adhere the textile carrier element to the or each structural support component; and forming the adhered textile carrier element and structural support component into a supportive textile. Such a method allows a structural support component to be correctly positioned and adhered to a textile which can then form a textile that provides a supportive functionality. In embodiments where the supportive textile is used for a garment, the supportive functionality is provided without compromising on comfort to the wearer. A supportive textile applies to any textile which requires support or strengthening functionality. For example, a textile may need to hold a required shape and thus requires some form of support to form that shape, or a textile may need strengthening in particular areas or sections. The supportive textile may be a garment such as a bra, corset, bustier, top, dress, briefs or boxers, hood, swimwear, or it may be a face mask. Moreover, the one or more structural support components may take any shape to provide the required support or strengthening functionality, for example they may be straight or curved or a combination of two. Optionally the adhesive layer is a heat activated polyurethane adhesive layer. The adhesive layer being a heat-activated adhesive layer means that the adhesive does not inadvertently activate, and thus spoil or adhere to an unwanted component or textile, until the correct activating temperature is applied during manufacture. Preferably, a removable backing layer is provided on the adhesive layer, the method further comprising the step of removing the backing layer before positioning the textile carrier element in alignment with the structural support component. Providing such a removeable backing layer protects the adhesive layer from contamination which might otherwise spoil or reduce the adhering capabilities of the adhesive layer, until the adhesive layer is required (i.e. just before the textile carrier element is positioned in alignment with the structural support component, at which point the backing layer is removed). Preferably the removeable backing layer is a layer of polypropylene. The jig may include a positioning member, wherein the or each correspondingly shaped apertures are formed in the positioning member. The inclusion of a separate positioning member means that the correspondingly shaped apertures can be readily formed and changed for different shapes of structural support components. Preferably, the or each correspondingly shaped aperture is a cut out formed as a window through the positioning member, which constitutes a simple and cost effective way of forming the receiving apertures. In other embodiments, however, the or each correspondingly shaped aperture need not extend through the positioning member and may instead be provided in the form of recesses formed in the positioning member. The positioning member may be a heat resistant sheet. Such an arrangement prevents the positioning member from becoming warped or damaged during the manufacturing process due to the step of applying heat to the aligned textile carrier element and one or more structural support component. It is envisaged that the positioning member may include a plurality of receiving apertures wherein the receiving apertures all have the same shape, or have different shapes to each other or a mixture of the same and different shapes. Such an arrangement means that the required shapes of structural support components can be used for the desired support or strengthening requirements of the textile. In particularly preferred embodiments, the positioning member may further include one or more position indicators positioned relative to the one or more receiving apertures to aid in positioning the textile carrier element in alignment with the or each structural support component. The inclusion of such position indicators provides a guide, e.g. visual and/or tactile, for correctly positioning the textile carrier element relative to the structural support component. The step of forming the adhered textile carrier element and structural support component into a supportive textile may include forming the textile carrier element itself into a textile. In such embodiments, the textile carrier element itself is the resulting supportive textile. In other words, the one or more structural support components are adhered directly to the support textile with the need for any intermediary textile element. In other embodiments, the step of forming the adhered textile carrier element and structural support component into a supportive textile includes securing the adhered textile carrier and structural support component to a textile. In such embodiments, the textile carrier element acts as an intermediary textile element which is then secured to the textile to form the resulting supportive textile. Preferably, the fabric strip folded about the plastics core includes a fabric strip having a plush surface and a plastics coating applied to the plush surface so that at least surface yarns of the plush surface are embedded in the plastics coating and form a composite structure at the juncture between the plastics coating and the plush surface, wherein the fabric strip is folded about the plastics coating so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip. In such embodiments, the fabric strip is preferably a woven structure including a pair of ribs protruding from the fabric strip on opposite sides of the plush surface, the plastics coating being applied to the plush surface, between the ribs, so that the warp yarns of the plush surface are embedded in the plastics coating in the composite structure, and wherein the fabric strip further includes a pair of ribs protruding from the opposing surface of the fabric strip, the fabric strip being folded so as to align the ribs protruding from the opposing surface in face to face contact with the ribs protruding from the fabric strip on opposite sides of the plush surface. Optionally, the plastics material (i.e. the plastics coating that is used to form the plastics core) is a thermoplastic material. A thermoplastic material has the advantage of being able to the recycled, which is particularly important for improving the environmental aspects of the supportive textile being formed by the method of the invention, and thus the recyclability of the overall textile/garment into which the supportive textile may be incorporated. In many cases, for example where the support textile is being used as underwire for a brassiere, the supportive portion may be the only portion of the garment which is traditionally non-recyclable. Therefore, using a thermoplastic coating means that the thermoplastic core can be heated and remoulded so as to be turned into new, usable products once the textile had reached the end of its use, thus providing a recyclable textile product. It will be understood that a thermoplastic coating would be chosen to have suitable characteristics for the intended purpose of the supportive textile. For example, if the supportive textile is intended to be used in a garment (e.g. a brassiere), then a thermoplastic coating with suitably high melting/moulding temperature would be chosen so that the garment can withstand machine washing without distorting or melting the thermoplastic core. The thermoplastic coating may be a polyamide, or more preferably a polyester. The thermoplastic coating may be a biodegradable thermoplastic, e.g. thermoplastic starch (TPS), so as to further enhance the sustainability of the supportive textile. In other embodiments, a material other than a thermoplastic may be used. Other materials, such as thermosetting plastic materials or adhesives or epoxy resins for example, could be used to form a coating on the plush surface of the fabric strip, and thus form the plastics core. Bio-based and biodegradable plastics materials may be used so as to enhance the sustainability of the supportive textile. It will be evident to the skilled person what materials might be chosen to achieve the required penetration into the plush surface on application of the coating and formation of the required composite at the juncture between the plush surface. Materials exhibiting an appropriate shore d hardness (e.g. approximately 50 to 80) once allowed to cool or allowed to cure so as to rigidify would be particularly suitable. Accordingly any references herein to thermoplastic coating should be considered interchangeable with references, for example, to a thermosetting plastic coating. In embodiments where a thermosetting plastic material is used, curing of the material once it is applied may be achieved through the application of heat or through a chemical reaction (two-part epoxy, for example) or through irradiation (UV radiation or electron beam processing, for example). Moreover, it will be understood that some thermosetting plastic materials may be heated after they have been rigidified so as to exhibit limited remoulding capabilities that may be utilised during manufacture, e.g. to help shape or bend the thermosetting plastic core onto a desired textile or garment. As such, the thermosetting plastic material may be chosen so that it has some (albeit, limited) thermoplastic properties. Furthermore, a mixture or blend of plastics materials, e.g. a blend of thermoplastic and thermosetting materials, may be used in the coating. The comments above in relation to plastics materials apply mutatis mutandis to the second to sixth aspects of the invention. According to a second aspect of the invention there is provided a method of forming a textile element for use as a structural support component in a garment, the method comprising the steps of: (i) providing a fabric strip having a plush surface; (ii) applying a plastics coating to the plush surface of the fabric strip so that the plastics coating penetrates the plush surface; (iii) allowing the plastics coating to rigidify so as to embed at least surface yarns of the plush surface in the plastics coating and thereby form a composite structure at the juncture between the plastics coating and the plush surface, (iv) folding the fabric strip about the plastics coating before allowing the plastics coating to rigidify so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip, wherein a multi-ply adhesive tape is applied simultaneously with one or more of the above steps of the method to an outer surface of the fabric strip, the tape having first and second layers of adhesive on opposing sides of a barrier layer, with the first layer of adhesive in face to face contact with the outer surface of the fabric strip so that the adhesive tape is secured to and extends longitudinally along an outer surface of the fabric strip once it is folded about the plastics coating with the second layer of adhesive facing outwardly from the outer surface of the fabric strip. References to a plush surface herein are intended to refer to a fabric surface having a long, soft nap or raised pile. The provision of a plush surface allows a molten plastics material to absorb and penetrate into the fabric strip and encase at least surface yarns of the plush surface. This means that, once the plastics coating is allowed to rigidify, the surface yarns of the plush surface become embedded in the plastics coating and form a composite structure at the juncture between the plastics coating and the plush surface. Penetration of the plastics coating into the plush surface and the formation of a composite structure in which yarns are embedded in the plastics coating greatly increases the strength and flexibility of the resultant textile element over and above a textile element formed from a plastics material applied to a non-plush surface of a textile carrier. This is because a molten plastics material cannot penetrate into a non- plush surface of a textile carrier and merely tacks itself to the non-plush surface. Accordingly the strength and flexibility of such a textile element is determined solely by the strength and flexibility of the plastics material. Consequently, whilst use of the plastics material will likely result in a relatively hard textile element, the textile element will be prone to breakage as a result of the brittleness of the plastics material. In contrast, the formation of a composite structure in which yarns are embedded in the plastics material reduces the brittleness of the resultant textile element and results in a more flexible structure that is less prone to breakages. It will be appreciated that the flexibility of the resultant textile element is determined by the extent to which the plastics coating penetrates the plush surface. The provision of an adhesive tape allows the attachment of the resultant textile garment to a carrier layer or directly to a garment. The use of a multi-ply adhesive tape reduces the amount of adhesive that might otherwise be required to both secure the adhesive tape to the fabric strip and, subsequently, to another element such as a textile carrier element or other textile such as a garment is a single ply adhesive tape was used. In circumstances where a single ply adhesive tape is used, the application of heat and/or pressure over a period of time during performance of the method of forming the textile element may result in the full thickness of the adhesive layer penetrating the textile surface of the fabric strip. As a result, an inadequate amount of adhesive might be left on the outer surface of the fabric strip for subsequent adhesion of the resultant textile element to a textile carrier element or other textile. The use of a multi-ply adhesive tape having an intervening barrier layer located between first and second layers allows the use of the same amount of adhesive with the barrier layer preventing the second layer of adhesive penetrating the textile surface of the fabric strip. As a result, it is possible to ensure that an adequate amount of adhesive is left on the outer surface of the fabric strip for subsequent adhesion of the resultant textile element to a textile carrier element or other textile. Preferably, each of the first and second adhesive layers is a heat-activated polyurethane adhesive and the barrier layer is a layer of polyurethane, wherein the polyurethane barrier layer has a higher melting point than the polyurethane adhesive. More preferably, each of the first and second adhesive layers is a heat-activated polyurethane adhesive having a melting temperature in the range of 140-160°C. The use of a polyurethane barrier layer having a higher melting point than the polyurethane adhesive ensures that the multi-ply tape may be heated to a sufficiently high temperature to ensure adhesion of the multi-ply tape to the fabric strip without affecting the integrity of the barrier layer, which prevents penetration of the second layer of adhesive into the textile surface of the fabric strip. So as to prevent contamination of the outer surface of the second adhesive layer, the multi-ply adhesive tape may further include a removable backing layer on an outer surface of the second layer of adhesive. Preferably, the removable backing layer is a layer of polypropylene. The use of a backing layer of polypropylene reduces the risk of the backing layer tearing during subsequent shaping of the resultant textile element before rigidifying of the plastics coating is complete or subsequently on the application of heat to the resultant textile element. A more conventional waxed backing paper is more likely tear during such shaping of the fabric strip. A continuous length of the resultant textile element strip may, for example, be coiled around a cylindrical or spiral form in order to provide a coiled length of the resultant textile element that might then be cut into discrete lengths for use as structural support components in a garment such as a brassiere, dress or bustier intended to provide breast support. It is also envisaged that the resultant textile element may be shaped to define structural support components of different shapes depending on the intended use of the structural support components. Such structural support components may, for example, be used as bone elements in garments intended to provide structural support such as in a corset or a pair of briefs. In particularly preferred embodiments, the fabric strip is a woven structure and the plastics coating is applied to the plush surface so that the plastics coating penetrates the plush surface so as to embed the warp yarns of the plush surface once the plastics coating is allowed to rigidify. Such a degree of penetration of the plastics coating into the plush surface of the fabric strip could result in a textile element in which the plastics coating is exposed on the opposite side of the fabric strip. Consequently, in such embodiments, the fabric strip preferably includes a more densely woven backing to the plush surface so as to prevent penetration of the plastics coating through the entire depth of the fabric strip. The increased flexibility of the resultant textile element means that the textile element will return to its original shape upon flexing, unlike a conventional under-wire for a brassiere, for example, which is relatively inflexible and likely to remain in a bent configuration following bending or flexing. The use of a plastics coating encasing at least the surface yarns of a plush surface of the fabric strip thus results in the creation of a structural support component that exhibits strength comparable to that of a conventional under-wire but which is more flexible and thus provides greater wearer comfort. In a particularly preferred embodiment of the invention the plastics coating penetrates the plush surface so as to produce a substantially elastic textile element once the plastics coating is allowed to rigidify. This is to say, the textile element will flex or bend upon application of a force tending to cause flexure or bending. It will then return automatically to its original shape once the force causing flexure or bending is removed. In preferred embodiments of the invention, the fluidity of the plastics material is increased prior to the step of applying the plastics coating to the plush surface. This helps to increase the penetration of the plastics coating into the plush surface. It also however increases the risk of leakage of plastics material due to the fluidic nature of the plastics material. The use of a fabric strip having a plush surface however helps to prevent leakage of molten plastics material during application of the plastics coating – the plush surface restraining flow of the molten plastics material. This is because the molten plastics material penetrates into the plush surface and is therefore less likely to leak from the plush surface, which would otherwise likely be the case if the fabric strip omitted the plush surface. The flow of molten plastics material from the plush surface during and after application of the plastics coating may be further prevented through the inclusion of a pair of ribs protruding from the fabric strip, on opposite sides of the plush surface. In such embodiments the plastics coating is of course applied between the ribs. So as to enhance the comfort of a wearer wearing a garment incorporating the resultant textile element, the fabric strip is folded about the plastics coating so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip before allowing the plastics coating to rigidify. This improves the aesthetic appearance of the resultant textile element in that the folding step encases the plastics coating within the fabric strip. The step of folding the fabric strip preferably occurs after the plastics coating has been allowed to cool to form a soft and tacky surface but before the plastics coating has been allowed to rigidify. It will be appreciated that allowing the plastics coating to cool prior to folding the fabric strip about the plastics coating reduces the risk of the plastics material leaking. It also acts to increase the adhesive properties of the plastics coating so that it may adhere to the opposing surface of the fabric strip. In such embodiments the fabric strip may further include a pair of ribs protruding from the opposing surface of the fabric strip and the step of folding the fabric strip about the plastics coating involves aligning the ribs protruding from the opposite surface in face to face contact with the ribs protruding from the fabric strip on opposite sides of the plush surface. Such an arrangement further restrains the flow of molten plastics material by forming an envelope to receive the plastics coating. The use of ribs to restrain the flow of molten plastics material ensures the creation of textile-only regions on opposite sides of the plush surface, the textile-only regions being free from any plastics coating. This is particularly important in circumstances where the resultant textile element is intended to be sewn onto a garment or otherwise to another textile piece. The absence of any plastics coating facilitates penetration of the textile-only regions with a needle during the sewing process and reduces the risk of injury that might otherwise occur as a result of a snapping needle if a sewing machine needle was to impact plastics material. According to a third aspect of the invention there is provided a textile element for use as a structural support component in a garment, the textile element comprising a fabric strip having a plush surface and a plastics coating applied to the plush surface so that at least surface yarns of the plush surface are embedded in the plastics coating and form a composite structure at the juncture between the plastics coating and the plush surface, wherein the fabric strip is folded about the plastics coating so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip, and the textile element further including an adhesive tape adhered to an outer surface of the fabric strip so as to present an adhesive layer facing outwardly from the outer surface of the fabric strip. Preferably, the adhesive tape is a multi-ply adhesive tape having first and second layers of adhesive on opposing sides of a barrier layer, wherein the first layer of adhesive is adhered in face to face contact with the outer surface of the textile element and the second layer of adhesive faces outwardly from the fabric strip. In such embodiments, each of the first and second adhesive layers may be a heat- activated polyurethane adhesive and the barrier layer is a layer of polyurethane, wherein the polyurethane barrier layer has a higher melting point than the polyurethane adhesive. More preferably, each of the first and second adhesive layers is a heat-activated polyurethane adhesive having a melting temperature in the range of 140-160°C. Preferably, the multi-ply adhesive tape further includes a removable backing layer on an outer surface of the second layer of adhesive. In such embodiments, the removable backing layer may be a layer of polypropylene. Preferably, the fabric strip is a woven structure including a pair of ribs protruding from the fabric strip on opposite sides of the plush surface, the plastics coating being applied to the plush surface, between the ribs, so that the warp yarns of the plush surface are embedded in the plastics coating in the composite structure, and wherein the fabric strip further includes a pair of ribs protruding from the opposing surface of the fabric strip, the fabric strip being folded so as to align the ribs protruding from the opposing surface in face to face contact with the ribs protruding from the fabric strip on opposite sides of the plush surface. According to a fourth aspect of the invention there is provided a method of forming a supportive textile element having a desired shape, the method comprising the steps of: providing a fabric strip having a plush surface; applying a plastics coating to the plush surface of the fabric strip so that the plastics coating penetrates the plush surface; folding the fabric strip about the plastics coating before allowing the plastics coating to rigidify so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip, wherein a section of the folded fabric strip creates a composite free portion; allowing the plastics coating to rigidify so as to embed at least surface yarns of the plush surface in the plastics coating and thereby form a composite structure at the juncture between the plastics coating and the plush surface; removing a section of fabric from the composite free portion of the fabric strip to create first and second textile element portions on either side of the removed section of fabric; and bringing the first and second textile element portions towards one another to change the configuration of the first and second textile element portions relative to one another thereby creating a desired shape of supportive textile element. A supportive textile applies to any textile which requires support or strengthening functionality. For example, a textile may need to hold a required shape and thus requires some form of support to form that shape, or a textile may need strengthening in particular areas or sections. The supportive textile may be or may form part of a garment such as a bra, corset, bustier, top, dress, briefs or boxers, hood, swimwear, or it may be a face mask. The supportive portion of the garment may be “underwire” of a bra (or other top garment), wings of a bra (or other top garment), ribs of a bra (or other top garment), support on a waistband of a bottom garment, support around the buttocks of a bottom garment, support around hood, support over the nose or sides of a face mask. Many different desired shapes are possible, as explained in more detail later, including a curved shape (at different severities of curvature), an angled shape, and shaped at right angles. The shape may include a combination of shapes and may include a straight portion. References to a plush surface herein are intended to refer to a fabric surface having a long, soft nap or raised pile. The provision of a plush surface allows a molten plastics material to absorb and penetrate into the fabric strip and encase at least surface yarns of the plush surface. This means that, once the plastics coating is allowed to rigidify, the surface yarns of the plush surface become embedded in the plastics coating and form a composite structure at the juncture between the plastics coating and the plush surface. Penetration of the plastics coating into the plush surface and the formation of a composite structure in which yarns are embedded in the plastics coating greatly increases the strength and flexibility of the resultant textile element over and above a textile element formed from a plastics material applied to a non-plush surface of a textile carrier. This is because a molten plastics material cannot penetrate into a non- plush surface of a textile carrier and merely tacks itself to the non-plush surface. Accordingly the strength and flexibility of such a textile element is determined solely by the strength and flexibility of the plastics material. Consequently, whilst use of the plastics material will likely result in a relatively hard textile element, the textile element will be prone to breakage as a result of the brittleness of the plastics material. In contrast, the formation of a composite structure in which yarns are embedded in the plastics material reduces the brittleness of the resultant textile element and results in a more flexible structure that is less prone to breakages. It will be appreciated that the flexibility of the resultant textile element is determined by the extent to which the plastics coating penetrates the plush surface. The increased flexibility of the resultant textile element means that the supportive textile element will return to its original shape upon flexing, unlike a conventional under-wire for a brassiere, for example, which is relatively inflexible and likely to remain in a bent configuration following bending or flexing. Therefore, in embodiments where the supportive textile element is used in a garment, the supportive functionality is provided without compromising on comfort to the wearer. Meanwhile, removing a section of fabric and bringing the resulting first and second textile element portions towards one another allows a change in configuration, i.e. shape, of the supportive textile element. In this way, a desired shape of the supportive textile element can be achieved using a single, continuous piece of a supportive textile element. This is in contrast to having to use more than one supportive textile element which each have to be formed into the desired (overall) shape. Preferably the step of removing a section of fabric from the composite free portion of the fabric strip includes removing a triangle shaped section. Different sizes and angles of triangles can be used depending on the desired shaped that is required. Optionally the method further includes the step of coiling the fabric strip before allowing the plastics coating to rigidify so as to form the fabric strip into a helical coil structure having a predetermined diameter. Such coiling sets a desired curvature of the fabric strip, and that curvature can be further manipulated by removing the section of fabric and bringing together the first and second textile element portions. For example, a “W” shape can be formed from a curved fabric strip so as to form a continuous under wire shape for a brassiere. The step of bringing the first and second textile element portions towards one another may include bringing the first and second textile element portions into contact with one another at the removed section of the fabric strip. Bringing the first and second textile element portions into contact with one another at the removed section provides a flush join between the two textile element portions. It also makes joining of the two portions together in the desired shape easier. Optionally the method further includes the step of, after bringing the first and second textile element portions towards one another, securing the first and second textile element portions to one another. Securing the first and second textile element portions to one another means that the supportive textile element is secured in its desired shape ready to be used within a textile. The method may further include the step of forming complimentary holes in the first and second textile element portions and using a securing means through the holes to secure the textile element portions to one another. Using complimentary holes and a securing means in the first and second textile element portions provides a robust means of securing the portions together so as to hold them in the desired shape. Preferably the method further includes the step of, after bringing the first and second textile element portions towards one another, securing the shaped supportive textile element to another textile. The supportive textile element can be directly secured to another textile so that such securing also holds the textile element in the desired shape. Alternatively, the supportive textile element can be held in its desired shape by its own securing means (as outlined above) and then secured to another textile. The step of securing the supportive textile element to another textile may include sewing the fabric strip at the composite free portion. Sewing the fabric strip at the composite free portion so as to secure the supportive textile element to another textile eases the attachment process and protects the needles from breakage which might otherwise occur if sewing is performed through the composite portion. Optionally the method further includes the step of forming first and second composite free portions located on either side of the plastics coating. Forming first and second composite free portions located on either side of the plastics coating provides two platforms from which a section can be removed thus the configuration of the first and second textile element portions can be changed relative to one another in an effectively opposing manner. For example, the textile element can be curved in one direction and/or curved in another direction. Therefore, increasing the options of the desired shape that can be achieved. For example, the method may further include the steps of removing a section of fabric from each of the first and second composite free portions to create a first pair of first and second textile element portions on the first composite free portion and a second pair of first and second textile element portions on the second composite free portion; and bringing each respective pair of first and second textile element portions towards one another to change the configuration of each respective pair of first and second textile element portions relative to one another. Moreover, the method may further include the step of removing more than one section of fabric from the or each composite free portion. Thus, more complex shapes of the supportive textile element can be created. The fabric strip may be a woven structure including a pair of ribs protruding from the fabric strip on opposite sides of the plush surface, the plastics coating being applied to the plush surface, between the ribs, so that the warp yarns of the plush surface are embedded in the plastics coating in the composite structure, and wherein the fabric strip further includes a pair of ribs protruding from the opposing surface of the fabric strip and the step of folding the fabric strip about the plastics coating involves aligning the ribs protruding from the opposing surface in face to face contact with the ribs protruding from the fabric strip on opposite sides of the plush surface. Such an arrangement helps to restrain the flow of molten plastics material by forming an envelope to receive the plastics coating. The use of ribs to restrain the flow of molten plastics material ensures the creation of composite free (i.e. textile-only) portions on one or both sides of the plush surface. Optionally the method further includes the steps of: applying an adhesive tape to an outer surface of the folded fabric strip so as to present an adhesive layer facing outwardly from the outer surface; locating the shaped fabric strip in a correspondingly shaped aperture formed in a jig so that the adhesive layer is exposed; positioning a textile carrier element relative to the shaped fabric strip so as to cover the adhesive layer on the shaped fabric strip in a predetermined configuration; applying heat and pressure to the aligned textile carrier element and the shaped fabric strip so as to adhere the textile carrier element to the shaped fabric strip; and forming the adhered textile carrier element and shaped fabric strip into a supportive textile. Such method steps allow the supportive textile element to be correctly positioned and adhered directly to a textile such as a garment or to a textile carrier layer which can then be secured to a textile such as a garment. In some embodiments, the step of applying an adhesive tape to an outer surface of the folded fabric strip includes applying a multi-ply adhesive tape simultaneously with one or more of the previous method steps, the tape having first and second layers of adhesive on opposing sides of a barrier layer, with the first layer of adhesive in face to face contact with the outer surface of the fabric strip so that the adhesive tape is secured to and extends longitudinally along an outer surface of the fabric strip once it is folded about the plastics coating with the second layer of adhesive facing outwardly from the outer surface of the fabric strip. The use of a multi-ply adhesive tape reduces the amount of adhesive that might otherwise be required to both secure the adhesive tape to the fabric strip and, subsequently, to another element such as a textile carrier element or other textile such as a garment is a single ply adhesive tape was used. In circumstances where a single ply adhesive tape is used, the application of heat and/or pressure over a period of time during performance of the method of forming the textile element may result in the full thickness of the adhesive layer penetrating the textile surface of the fabric strip. As a result, an inadequate amount of adhesive might be left on the outer surface of the fabric strip for subsequent adhesion of the resultant textile element to a textile carrier element or other textile. The use of a multi-ply adhesive tape having an intervening barrier layer located between first and second layers allows the use of the same amount of adhesive with the barrier layer preventing the second layer of adhesive penetrating the textile surface of the fabric strip. As a result, it is possible to ensure that an adequate amount of adhesive is left on the outer surface of the fabric strip for subsequent adhesion of the resultant textile element to a textile carrier element or other textile. Preferably, each of the first and second adhesive layers is a heat-activated polyurethane adhesive and the barrier layer is a layer of polyurethane, wherein the polyurethane barrier layer has a higher melting point than the polyurethane adhesive. More preferably, each of the first and second adhesive layers is a heat-activated polyurethane adhesive having a melting temperature in the range of 140-160°C. The use of a polyurethane barrier layer having a higher melting point than the polyurethane adhesive ensures that the multi-ply tape may be heated to a sufficiently high temperature to ensure adhesion of the multi-ply tape to the fabric strip without affecting the integrity of the barrier layer, which prevents penetration of the second layer of adhesive into the textile surface of the fabric strip. So as to prevent contamination of the outer surface of the second adhesive layer, the multi-ply adhesive tape may further include a removable backing layer on an outer surface of the second layer of adhesive. Preferably, the removable backing layer is a layer of polypropylene. The use of a backing layer of polypropylene reduces the risk of the backing layer tearing during subsequent shaping of the resultant textile element before rigidifying of the plastics coating is complete or subsequently on the application of heat to the resultant textile element. A more conventional waxed backing paper is more likely tear during such shaping of the fabric strip. The jig may include a positioning member, wherein the correspondingly shaped aperture is formed in the positioning member. The inclusion of a separate positioning member means that the correspondingly shaped aperture can be readily formed and changed for different shapes of structural support elements. The correspondingly shaped aperture may be a cut out formed as a window through the positioning member or wherein the correspondingly shaped aperture is a recess formed in the positioning member. In other embodiments, however, the correspondingly shaped aperture need not extend through the positioning member and may instead be provided in the form of recesses formed in the positioning member. The positioning member may be a heat resistant sheet. Such an arrangement prevents the positioning member from becoming warped or damaged during the manufacturing process due to the step of applying heat to the aligned textile carrier element and structural support element. In particularly preferred embodiments, the positioning member may further include one or more position indicators positioned relative to the receiving aperture to aid in positioning the textile carrier element in alignment with the shaped supportive textile element. The inclusion of such position indicators provides a guide, e.g. visual and/or tactile, for correctly positioning the textile carrier element relative to the supportive textile element. The step of forming the adhered textile carrier element and shaped fabric strip into a supportive textile may include forming the textile carrier element itself into a textile. In such embodiments, the textile carrier element itself is the resulting supportive textile. In other words, the shaped supportive textile element is adhered directly to the support textile with the need for any intermediary textile element. In other embodiments, the step of forming the adhered textile carrier element and shaped fabric strip into a supportive textile includes securing the adhered textile carrier and shaped fabric strip to a textile. In such embodiments, the textile carrier element acts as an intermediary textile element which is then secured to the textile to form the resulting supportive textile According to a fifth aspect of the invention there is provided a supportive textile element having a desired shape, the supportive textile element comprising a fabric strip having a plush surface and a plastics coating applied to the plush surface so that at least surface yarns of the plush surface are embedded in the plastics coating and form a composite structure at the juncture between the plastics coating and the plush surface, wherein the fabric strip is folded about the plastics coating so as to sandwich the plastics coating between the plush surface and an opposing surface of the fabric strip, the folded fabric strip having a composite free portion with a section of fabric removed from the composite free portion creating first and second textile element portions, wherein the fabric strip has a desired shape created by the bringing together of the first and second textile element portions to change the configuration of the first and second textile element portions relative to one another. Optionally the textile element further includes an adhesive tape adhered to an outer surface of the fabric strip so as to present an adhesive layer facing outwardly from the outer surface of the fabric strip. According to a sixth aspect of the invention there is provided a supportive garment comprising a garment fabric and a supportive textile element as described above secured to the garment fabric so as to create a supporting portion of the garment. Embodiments of the invention will now be described, by way of non-limiting examples, with reference to the accompanying drawings in which: Preferred embodiments of the invention will now be described, by way of non-limiting examples, with reference to the accompanying drawings in which: Figure 1 shows a structural support component, a textile carrier element and a jig for use in the method of the first embodiment of the invention; Figure 2 shows the step of locating structural support components in the jig shown in Figure 1 according to the first embodiment of the invention; Figure 3 shows the step of positioning a textile carrier element relative to the structural support components according to the first embodiment of the invention; Figure 4 shows the step of applying heat and pressure to the textile carrier element and structural support components according to the first embodiment of the invention; Figure 5 shows the resulting supportive textile from the method according to the first embodiment of the invention; Figures 6a and 6b show a textile element according to an embodiment of the invention; and Figures 7a and 7b illustrate the structure of a multi-ply adhesive tape used in the textile element shown in Figures 6a and 6b; Figures 8a to 8c show the steps of creating a desired shape of supportive textile element according to another embodiment of the invention; Figures 9a to 9e show examples of different shaped supportive textile elements according to embodiments of the invention; and Figure 10 shows a supportive textile element being coiled. Figures 1 to 5 illustrate the steps of the method of constructing a supportive textile according to a first embodiment of the invention. Starting with Figure 1, a structural support component 10, a jig 12 and textile carrier element 14 that are used in the method according to the first embodiment of the invention are shown. The structural support component 10 is in the form of a textile element 16 that includes a fabric strip folded about a plastics core. The textile element 16 further includes an adhesive tape adhered to an outer surface of the textile element so as to present an adhesive layer facing outwardly from an outer surface of the textile element 16. An example of such a textile element 16 is described in more detail below in relation to Figures 6a and 6b. In the embodiment shown, the structural support component 10 is U-shaped and is intended to be used in a bra to support a wearer’s breasts. As previously described, the structural support components 10 may be any suitable shape depending on the intended application of the structural support components 10 in the resulting supportive textile. In the embodiment shown, the adhesive layer is a heat activated polyurethane adhesive layer. In other embodiments, the adhesive layer may take any other suitable form, e.g. it may not be heat activated. Although not shown in the figures, there is a removeable backing layer provided on the adhesive layer. In this embodiment the removeable backing layer is a layer of polypropylene. The jig 12 includes a positioning member 20 in the form of a heat resistant sheet 22. In the embodiment shown, the sheet 22 is made from a sheet of silicone rubber having 2mm thickness. The heat resistant sheet 22 may take any other suitable form, such as a metal sheet, e.g. aluminium. Moreover, the heat resistant sheet 22 includes two apertures 24 formed as windows (i.e. cut outs) through the heat resistant sheet 22 which are shaped to correspond to the shape of the structural support components 10 (i.e. U-shaped in this embodiment). It will be understood that, depending on the support requirements of the resulting supportive textile, there may be any number of apertures 24 in any shape and in any configuration relative to one another. In other embodiments of the invention, the apertures 24 may be recesses (i.e. not formed all the way through) formed in the heat resistant sheet 22. In further embodiments, the apertures 24 may be integrally formed in the jig 12. The jig 12 further includes a heated plate 26 which is moveable to contact the positioning member 20 so as to apply heat and pressure to the positioning member 20. The jig 12 further includes a three position indicators 28 that are positioned at three different points relative to the apertures 24. The position indicators 28 are made from Teflon® but may be made from any suitable material (i.e. one which does not get damaged or warp under the heat applied by the heated plate 26). The position indicators 28 are visually distinct from the heat resistant sheet 22. The position indicators 28 may instead or additionally be tactilely distinct from the heat resistant sheet 22. The method according to the first embodiment of the invention includes locating two structural support components 10 in the correspondingly shaped apertures 24 of the jig 12 so that the adhesive layer is exposed, as shown in Figure 2. The method also includes removing the backing layer from the adhesive layer and this step can be done before locating the structural support components 10 in the correspondingly shaped apertures 24 or after. Next, the method includes positioning the textile carrier element 14 relative to each structural support component 10 so as to cover the adhesive layer on the or each structural support component 10 in a predetermined configuration, as shown in Figure 3. This step additionally includes using the positioning indicators 28 as a guide for where to position the textile carrier element 14 relative to the structural support components 10. The method then includes pressing the heated plate 26 onto the aligned textile carrier element 14 and the structural support components 10 (as shown in Figure 4) so as to apply heat and pressure to thus activate the adhesive and thereby adhere the textile carrier element 10 to the structural support components 10. The pressure and heat that is applied in this step is dependent on factors such as the material of the textile carrier element 14 and the structural support component 10 and the type of adhesive that is used. As an example, the heated plate 26 may generate a glue line temperature of 150-160C for a period of 15 seconds to 20 second at a pressure between 6 and 8 bars. The result of the aforementioned adhering step is shown in Figure 5, which shows the adhered textile carrier element and structural support component 28. Next, the method includes forming the adhered textile carrier element and structural support component 28 into a supportive textile. In this embodiment, this step includes securing the adhered textile carrier element and structural support component 28 to a bra. This may be done by any suitable means, e.g. sewing or by using an adhesive. In other embodiments, the textile carrier element 14 itself may be formed into the desired textile or garment (i.e. there is no intermediary textile element). A textile element 110 according to an embodiment of the invention is shown in Figures 6a and 6b. The textile element 110 includes a fabric strip 112 having a plush surface 114 and a plastics coating applied to the plush surface 116 of the fabric strip 112 so that yarns of the plush surface 116 are embedded in the plastics coating 114 and form a composite structure at the juncture between the plastics coating 114 and the plush surface 116. The textile element 110 also includes a pair of ribs 115 protruding from the fabric strip 112 and extending along opposite sides of the plush surface 116, on opposite sides of the plastics coating 114. The fabric strip 112 is folded so as to sandwich the plastics coating 114 between the plush surface 116 and an opposing surface 117 of the fabric strip 112. The textile element 110 further includes a pair of ribs 119 protruding from the opposing surface 117 and aligned in face to face contact with the ribs 115 protruding from the fabric strip on opposite sides of the plush surface 116. As shown in Figure 6a, an adhesive tape 120 is adhered to an outer surface 122 of the fabric strip 112 so as to present an adhesive layer 126 facing outwardly from the outer surface 122 of the fabric strip 112. The formation of the textile element 110 shown in Figures 6a and 6b will now be described, as follows. A fabric strip 112 have a plush surface 116 is selected and arranged so as to expose an outer surface 122, on the opposing side of the fabric strip 112 to the plush surface 116. In order to provide the outwardly facing adhesive layer 126 on the outer surface 122 of the fabric strip 112, a multi-ply adhesive tape 120 is applied to the outer surface 122 of the fabric strip 112 to one side of a central line A extending lengthwise along the outer surface 122. The multi-ply adhesive tape 120 (Figures 7a and 7b) includes first and second layers of heat-activated polyurethane adhesive 124,126 on opposing sides of a barrier layer 128. As shown in Figures 7a and 7b, a polypropylene backing layer 130 is provided on the outer surface of the second layer 126 of adhesive. The first and second layers 124,126 of polyurethane adhesive are preferably activated at temperatures between 140°C and 160°C. Prior to heating, the first layers 124 of heat-activated polyurethane adhesive presents a tacky surface that allows it to be pushed into tacky adhesion with the outer surface 122 of the fabric strip 112 so that the multi-ply adhesive layer 120 is secured to and extends longitudinally along the outer surface 122 of the fabric strip 112 to one side of the central line A of the outer surface 122. Thereafter, the fabric strip 112 is arranged to present the plush surface 116. So as to create the plush surface 116, which has a long, soft nap or raised pile, the fabric strip 112 is a woven structure in which the plush surface 116 is created by the use of textured yarns (not shown) in the woven structure at the plush surface 116. In other embodiments the fabric strip 112 may have a woven structure in which the plush surface 116 is created by reducing the number and/or thickness of weft yarns when compared to the number and/or thickness of warp yarns in the woven structure at the plush surface 116. This arrangement increases the exposure of the warp yarns in the woven structure at the plush surface 116 and thus produces the required nap or pile. In yet further embodiments the fabric strip 112 may have a woven structure in which the plush surface 116 is created by arranging warp yarns to form floating warp yarns passing over two or more weft at a time so as to increase exposure of the warp yarns in the woven structure at the plush surface 116. In yet further embodiments the fabric strip 112 may have a knitted structure. The plastics coating 114 is applied to the plush surface 116 by extruding molten plastics material along the plush surface 116 of the fabric strip 112, between the ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116. The provision of a plush surface 116 on the fabric strip 112 means that, during application of the plastics coating 114, the molten plastics material absorbs and penetrates into the plush surface 116 and coats the yarns of the plush surface 16. The viscosity of the molten plastics material is chosen so as to maximise the absorption and penetration of the molten plastics material into the plush surface 116. So as to ensure the first layer 124 of adhesive is heated in order to securely adhere the adhesive tape 120 to the outer surface of the fabric strip 112, the fabric strip 112 is preferably heated prior to applying the plastics coating 114. This, together with heating caused by the application of the plastics coating, activates the first layer 124 of adhesive, softening the first layer 124 of adhesive and thereby increasing the tackiness of the first layer 124 of adhesive. The use of a fabric strip 112 having a plush surface 116 also helps to prevent leakage of molten plastics material during application of the plastics coating 114 because it allows the molten plastics material to penetrate therein and thereby restrains flow of the molten plastics material. Flow of the molten plastics material is further restrained by the provision of ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116. The fabric strip 112 is then folded about the molten plastics material so as to sandwich the molten plastics material between the plush surface and an opposing surface 117 of the fabric strip 112. The ribs 119 protruding from the opposing surface 117 of the fabric strip 112 are aligned in face to face contact with the ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116 so as to form an envelope in which the molten plastics material is retained. Preferably, the fabric strip 112 is not folded until the plastics coating 114 has cooled so as to exhibit a soft and tacky surface that will adhere to the opposing surface 117 of the fabric strip 112. The application of pressure to fold the fabric strip 112 pushes the first layer 124 of adhesive against the outer surface 122 of the fabric strip 112. This causes the first layer 124 of adhesive to penetrate into the outer surface 122 of the fabric strip 112. As will be appreciated, the continued application of pressure to the adhesive tape 120 and the fabric strip 112 will cause the first layer 124 of adhesive to penetrate the outer layer 122 of the fabric strip 112. The inclusion of the centrally located barrier layer 128, however, limits the penetration of the adhesive tape 120 and prevents the second layer 126 of adhesive similarly penetrating into the outer surface 122 of the fabric strip 112. This is achieved through the use of a polyurethane barrier layer 128 having a relatively higher melting point than the polyurethane adhesive layers 124,126. This ensures that the barrier layer remains intact and provides a barrier to prevent penetration of the second layer 126 of adhesive into the outer surface 122 of the fabric strip 112. As a result, the second layer 126 of adhesive remains intact on the outer surface 122 of the fabric strip 112 for subsequent use to adhere the resultant textile element 110 to a textile carrier element or other textile. This in turn effectively reduces the amount of adhesive required to adhere the tape 120 to the outer surface 122 of the fabric strip 112 and provide sufficient adhesive for subsequent use. As such, the use of the multi-ply adhesive tape 120 with polyurethane barrier layer reduces the total amount of adhesive required by approximately 50% when compared with a single ply adhesive layer having no barrier layer and provided to adhere to the outer surface 122 of the fabric strip 112 and provide sufficient adhesive for subsequent use. The use of the multi-ply tape also reduces the extent to which temperature must be controlled during the process of forming the textile element 110 because the extent to which the first layer 124 of adhesive might penetrate the outer surface 122 of the fabric strip 112 is limited by the barrier layer 128. As such, the operating temperature during formation of the textile element 110 may be anywhere between 110°C and 180°C. Greater care in controlling the temperature would be required if a single-ply tape was used, which would require control to ensure only the required amount of adhesive penetrating the outer surface 122 of the fabric strip 112 to adhere the adhesive tape 120 to the fabric strip 112. The plastics coating 114 is then allowed to rigidify (which may involve cooling and/or curing, depending on the plastics material used), thereby embedding the yarns of the plush surface 116 in the plastics coating 114 and forming a composite structure at the juncture J between the plastics coating and the plush surface 116. During rigidifying, the folded fabric strip 112 may be shaped according to the shape required to achieve the intended use of the textile element 110. The folded fabric strip 112 might be coiled around a cylindrical or spiral form, for example, in order to create a coiled length of textile element 110. The use of a polypropylene backing layer 130 reduces the risk of the backing layer tearing during such subsequent shaping of the resultant textile element 110 before rigidifying of the plastics coating 114 is complete. Penetration of the plastics coating 114 into the plush surface 116 and the formation of a composite structure in which the yarns are embedded in the plastics coating 114 increases the strength and flexibility of the textile element 110 over and above a textile element formed from a plastics material applied to a non-plush surface of a textile carrier, as outlined above. The textile element 110 produces a substantially elastic response when subjected to a force tending to cause flexure or bending. This is to say, the textile element 110 will flex or bend upon application of a force tending to cause flexure or bending and will return automatically to its original shape once the force causing flexure or bending is removed. In other, similar embodiments, it is envisaged that the ribs 119 protruding from the opposing surface 117 of the fabric strip 112 may be omitted. In further, similar embodiments, it is envisaged that the fabric strip 112 may include a plush surface provided on the opposing surface 117 of the fabric strip 112, between the ribs 119 protruding from the opposing surface 117, and plastics material may be applied to the plush surface on the opposing surface 117 at the same time as plastics material is applied to the plush surface located between ribs 115. In such embodiments, once the plastics material is allowed to cool so as to form a soft and tacky surface, the fabric strip 112 may be folded so as to align the ribs 115 protruding either side of the plush surface 116 and the ribs 119 protruding from the opposing surface 117 so as to encase the plastics coating provided on both plush surfaces between the ribs 115,119. This allows the creation of a thicker layer of plastics coating than would otherwise be possible through the application of plastics material to a single plush surface 116 and also increases the depth of the resultant composite structure by ensuring that the plastics material penetrates into both of the plush surfaces – thereby ensuring that the strength of the resultant textile element is comparable to the depth of the plastics coating. Figures 8a to 10 relate to a supportive textile which is formed into a desired shape. The supportive textile is based upon a textile element 110 as shown in Figures 6a and 6b. For completeness, the textile element 110 shown in Figures 6a and 6b is discussed again below. The textile element 110 includes a fabric strip 112 having a plush surface 114 and a plastics coating applied to the plush surface 116 of the fabric strip 112 so that yarns of the plush surface 116 are embedded in the plastics coating 114 and form a composite structure at the juncture between the plastics coating 114 and the plush surface 116. The textile element 110 also includes a pair of ribs 115 protruding from the fabric strip 112 and extending along opposite sides of the plush surface 116, on opposite sides of the plastics coating 114. The fabric strip 112 is folded so as to sandwich the plastics coating 114 between the plush surface 116 and an opposing surface 117 of the fabric strip 112. The plastics coating 114 is then allowed to rigidify (which may involve cooling and/or curing, depending on the plastics material used), thereby embedding the yarns of the plush surface 116 in the plastics coating 114 and forming a composite structure at the juncture J between the plastics coating 114 and the plush surface 116. The textile element 110 further includes a pair of ribs 119 protruding from the opposing surface 117 and aligned in face to face contact with the ribs 115 protruding from the fabric strip on opposite sides of the plush surface 116. The fabric strip 112 includes composite free portions 121 (i.e. portions of the fabric strip which are textile only portions) on either side of the plastics coating 114 such that there are two composite free portions 121 running along both edges of the fabric strip 112. In other embodiments, there may only be a single composite free portion 121 on one side of the plastics coating 114. In this embodiment, the composite free portions 121 are defined by a barrier created by the ribs 119, 115. In other embodiments, the ribs 119, 115 may be omitted from the fabric strip 112 and the composite free portions 121 may be formed effectively by the edge of the plush surface 116. In the embodiment shown, the two composite free portions 121 are created upon folding of the fabric strip 112. In other embodiments, one or both of the composite free portions 121 may be formed by sewing on a fabric portion to one/both sides of the plastics coating 114. This method may also be used as a way to extend the length of the or each composite free portions 121. In either case, the composite free portions may be used to directly sew the resulting textile element 110 to a fabric, thus no further securing means (e.g. an adhesive layer) is necessary. In embodiments where an alternative securing means is required, an outwardly facing adhesive layer is provided. In order to provide the outwardly facing adhesive layer 126 on the outer surface 122 of the fabric strip 112, an adhesive tape 120 is applied to the outer surface 122 of the fabric strip 112 to one side of a central line A extending lengthwise along the outer surface 122. It will be appreciated that an adhesive tape 120 may be applied additionally to the outer surface 122 of the fabric strip 112 on the other side of the central line A so that there are two outwardly facing adhesive layers 126 (i.e. on both sides of the fabric strip 112). The adhesive tape 120 is described in more detail below in relation to Figures 7a and 7b. Figures 7a and 7b show the adhesive tape as a multi-ply adhesive tape 120 (in other embodiments, it may be a single payer adhesive tape). The multi-ply adhesive tape 120 includes first and second layers of heat-activated polyurethane adhesive 124, 126 on opposing sides of a barrier layer 128. A polypropylene backing layer 130 is provided on the outer surface of the second layer 126 of adhesive. The first and second layers 124,126 of polyurethane adhesive are preferably activated at temperatures between 140°C and 160°C. Prior to heating, the first layers 124 of heat-activated polyurethane adhesive presents a tacky surface that allows it to be pushed into tacky adhesion with the outer surface 122 of the fabric strip 112 so that the multi-ply adhesive layer 120 is secured to and extends longitudinally along the outer surface 122 of the fabric strip 112 to one side of the central line A of the outer surface 122. Thereafter, the fabric strip 112 is arranged to present the plush surface 116. So as to create the plush surface 116, which has a long, soft nap or raised pile, the fabric strip 112 is a woven structure in which the plush surface 116 is created by the use of textured yarns (not shown) in the woven structure at the plush surface 116. In other embodiments the fabric strip 112 may have a woven structure in which the plush surface 116 is created by reducing the number and/or thickness of weft yarns when compared to the number and/or thickness of warp yarns in the woven structure at the plush surface 116. This arrangement increases the exposure of the warp yarns in the woven structure at the plush surface 116 and thus produces the required nap or pile. In yet further embodiments the fabric strip 112 may have a woven structure in which the plush surface 116 is created by arranging warp yarns to form floating warp yarns passing over two or more weft at a time so as to increase exposure of the warp yarns in the woven structure at the plush surface 116. In yet further embodiments the fabric strip 112 may have a knitted structure. The plastics coating 114 is applied to the plush surface 116 by extruding molten plastics material along the plush surface 116 of the fabric strip 112, between the ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116. The provision of a plush surface 116 on the fabric strip 112 means that, during application of the plastics coating 114, the molten plastics material absorbs and penetrates into the plush surface 116 and coats the yarns of the plush surface 16. The viscosity of the molten plastics material is chosen so as to maximise the absorption and penetration of the molten plastics material into the plush surface 116. So as to ensure the first layer 124 of adhesive is heated in order to securely adhere the adhesive tape 120 to the outer surface of the fabric strip 112, the fabric strip 112 is preferably heated prior to applying the plastics coating 114. This, together with heating caused by the application of the plastics coating, activates the first layer 124 of adhesive, softening the first layer 124 of adhesive and thereby increasing the tackiness of the first layer 124 of adhesive. The use of a fabric strip 112 having a plush surface 116 also helps to prevent leakage of molten plastics material during application of the plastics coating 114 because it allows the molten plastics material to penetrate therein and thereby restrains flow of the molten plastics material. Flow of the molten plastics material is further restrained by the provision of ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116. The fabric strip 112 is then folded about the molten plastics material so as to sandwich the molten plastics material between the plush surface and an opposing surface 117 of the fabric strip 112. The ribs 119 protruding from the opposing surface 117 of the fabric strip 112 are aligned in face to face contact with the ribs 115 protruding from the fabric strip 112 on opposite sides of the plush surface 116 so as to form an envelope in which the molten plastics material is retained. Preferably, the fabric strip 112 is not folded until the plastics coating 114 has cooled so as to exhibit a soft and tacky surface that will adhere to the opposing surface 117 of the fabric strip 112. The formation of the textile element 110 shown in Figures 1a and 1b into a desired shape will now be described, in relation to Figures 8a to 8c. For clarity, only the composite free portion 121 of the textile element 110 is shown in Figures 8a to 8c. The textile element 110 has been formed as described above in relation to Figures 1a and 1b to the point that the fabric strip has been folded and rigidified. Starting with Figure 8a, a section of fabric 200 is removed from the composite free portion 121 of the fabric strip 112 which creates first and second textile element portions 202, 204 on either side of the removed section of fabric 200. As shown in Figure 8b, the first and second textile element portions 202, 204 are then brought towards one another so as to change the configuration of the first and second textile element portions 202, 204 relative to one another. In this way, the remaining fabric at the removed section of fabric 200 acts as a hinge. The cutting of the removed section of fabric 200 may be considered to be a similar process to mitring (e.g. a “mitre cut”). This results in a change of shape of the fabric strip 112 which, in this example, started out as a linear strip (Fig 8a) and then a strip with a sharp corner (Fig 8b) was created by the change in configuration of the first and second textile element portions 202, 204. In this embodiment, the removed section of fabric 200 has a triangular shaped profile. Moreover, the cut portion of fabric has equal sides which allows the first and second textile element portions 202, 204 to be brought into alignment with one another at the removed section of fabric (Fig 8b). It will be appreciated that different angles can be selected so as to influence the resulting shape of the fabric strip. For example, shaping a more severe angle or curve in the fabric strip can be achieved by removing a wider triangle of fabric, whereas a less severe angle or curve in the fabric strip can be achieved by removing a narrow triangle of fabric. Moreover, the removed section of fabric 200 may take any other suitable shape. The first and second textile element portions 202, 204 may not be brought fully into contact with one another. They may instead be brought towards one another but stop short of contacting one another. It will be appreciated that the distance between the first and second textile element portions 202, 204 can be chosen so as to influence the resulting shape of the fabric strip 112. As shown in Figure 8c, in this example, the first and second textile element portions 202, 204 have formed therein complimentary holes 206, and the element portions 202, 204 are secured to one another via a securing means 208 inserted through the holes 206. The securing means 208 may be a button sew, staple, dog bone or any other suitable means. In other embodiments, the first and second textile element portions 202, 204 may be secured to one another without the need for complimentary holes, e.g. they may be sewn down the connecting edge or through use of an adhesive. For example, a combination of Lockstitch rows followed by cross stitch zigzag at either side of the cut edges may be used. In this way, the resulting shaped textile element is held together in the desired shape in its own right, ready to be used in another textile (e.g. a textile carrier or directly onto a garment) to provide support and/or strengthening functionalities. Alternatively, the first and second textile element portions 202, 204 may not be secured to one another but may instead be secured directly to another textile (e.g. a textile carrier or directly to a garment) and such securing is what holds the textile element in the desired shape. In either case, the shaped textile element 110 can be secured to another textile by sewing through the composite free portion 121 of the fabric strip 112. The other textile may be the supportive textile or instead may be a carrier textile which is then secured to the supportive textile. An adhesive may be used instead or in combination with the sewing. Although not shown in the figures, more than one section of fabric 200 may be removed from the or each composite free portion 121 so as to allow more than one change in configuration of the fabric strip 112 (i.e. via the pairs of first and second textile element portions created by each section of removed fabric). Different shapes and/or angles of removed fabric 200, and/or different distances between the textile element portions being brough together, can be used so as to create different severities of curvature in the fabric strip 112. Moreover, the removed fabric 200 can be taken from both sides of the fabric strip 112 via each of the composite free portions 121, such that opposing curvatures can be created. Further examples of differently shaped textile elements 110 are shown in Figures 9a to 9e. In each of these examples, the fabric strip 112 has been coiled before allowing the plastics coating to rigidify so as to form the fabric strip 112 into a helical coil structure having a predetermined diameter. In the other embodiments, the fabric strip may be rigidified into an oval shape. Such forming of a helical coil may be performed by coiling the fabric strip 112 around a cylindrical or spiral form, for example, in order to create a coiled length of textile element 110. An example of coiling the fabric strip 112 using a cylinder 144 is shown in Figure 10. The fabric strip 112 may be fed into a screw thread 142 provided about the outer circumference of a cylinder 144 or rod. The step of feeding the fabric strip 112 into the screw thread 142 may be achieved by rotating the cylinder 144 (indicated by arrow “a”) so as to rotate the screw thread 142, and thus force the fabric strip 112 around and along it (indicated by arrow “b”), defining a helical coil structure. Alternatively, the step of feeding the fabric strip into the screw thread may be achieved through the use of a belt arranged around the mould and driven about the mould so as to drive the fabric strip into the screw thread. Advantageously, the plastics coating rigidifies whilst the fabric strip is held in a helical coil shape so as to set the fabric strip in that shape and allow the fabric strip to retain a helical coil shape when removed from the screw thread. Such an approach is advantageous as it allows the continuous production of a coiled fabric strip. To assist in the formation of a helical coil structure, the mould may be heated so as to heat the fabric strip and plastics coating before allowing the fabric strip and plastics coating to rigidify so as to set the fabric strip in the helical coil structure. Where the coiling of the fabric strip is achieved by using a screw thread, the diameter of the screw thread will define the diameter of the circles or coils in the resulting helical coil structure. Thus, if the desired diameter of each circle or coil in the helical coil structure is 10cm or 15cm or 20cm or 25cm or 30cm or 35cm or 40cm or 45cm or 50cm, then a screw thread having a diameter of 10cm or 15cm or 20cm or 25cm or 30cm or 35cm or 40cm or 45cm or 50cm, respectively, must be used. The production of a helical coil structure is particularly advantageous in that it permits large quantities of textile element to be manufactured in a continuous process. The resulting helical coil structure is also a convenient size and shape for storage, packaging and transportation. Figures 9a to 9c show textile elements 110 specifically for use as an underwire in a brassiere. The textile elements 110 form a “W”-shape that is required for a brassiere but instead of this shape being formed by two discrete curved elements, it is formed by a single element. The W-shape is formed by following the steps described above in relation to removing a section of fabric 200 and changing the configuration of the first and second textile element portions 202, 204. In Figure 9a, the section of fabric 200 has been removed from the composite free portion 121 from one side of the plastics coating (not seen in Figure 9a), and the first and second textile element portions 202, 204 have been brought together on the opposite side of the plastics coating (i.e. the opposite side from where the fabric section has been removed). The first and second textile element portions 202, 204 can be secured (e.g. sewn) at the composite free portion on that opposite side (of where the fabric section has been removed). This causes the removed section of fabric 200 to be “opened up” and leave the cut edges 208 of fabric exposed. In this regard, since the textile element has a plastics coating, the edges are less likely to fray and so finishing the exposed edges 208 is not essential. In Figure 9b, the section of fabric 200 has been removed from the composite free portion 121 from one side of the plastics coating, and the first and second textile element portions 202, 204 have been brought together on the same side of the plastics coating. The first and second textile element portions 202, 204 have been brought into contact with one another and have been secured by sewing 210 along the contact edge. In Figure 9c, two sections of fabric 200a, 200b have been removed from the composite free portion 121 from the same side of the plastics coating. The two removed sections of fabric 200a, 200b are spaced from one another by a small distance (compared to the remaining length of the textile element). The first textile portion 202a of the first removed section of fabric 200a (which is the outer textile portion 202a created from the first removed section of fabric 200a) is brought towards the second textile portion 204a of the first removed section of fabric 200a so that the exposed edges meet. The second textile portion 204b of the second removed section of fabric 200b (which is the outer textile portion 204b created from the second removed section of fabric 200b) is brought towards the first textile portion 202b of the second removed section of fabric 200b so that the exposed edges meet. Such bringing together of the two outer textile portions 202a, 204b creates the cups of the desired W-shape. It will be appreciated that bringing one textile portion towards the other textile portion is considered “bringing together” of the textile portions, in accordance with the claimed invention. The second textile portion 204a of the first removed section of fabric 200a and the first textile portion 202b of the second removed section of fabric 200b are part of the same portion of textile which, in this embodiment, create a substantially straight middle textile portion 203 positioned between the cups of the W-shape. The length of the middle textile portion 203 (i.e. the space between the two removed sections of fabric 200a, 200b) can be chosen to accommodate larger cup sizes. The textile portions 202a, 204a, 202b, 204b in Figure 9c are not shown as secured to one another along the contact (i.e. exposed) edge but they could be secured by any suitable means as previously described. As can be seen by Figures 9a to 9c, different deepness of the W-shape can be created depending on the size, shape and position of section(s) of fabric that is removed from the textile element, and thus different cup sizes for brassieres can be achieved. Figures 9d and 9e show textile elements 110 with section(s) of fabric 200 removed ready for the first and second textile element portions to be brought together to change the curvature and/or shape of the textile element 110. In Figure 9d, two sections of fabric 200a, 200b have been removed from the composite free portion from the same side of the textile element 110 ready for the respective first and second textile element portions 202a, 204a, 202b, 204b to be brought together so as to change the shape of the textile element (e.g. much like the W-shape shown in Figure 9c). In Figure 9e, one section of fabric 200 has been removed from the composite free portion ready for the first and second textile element portions 202, 204 to be brought together so as to change, i.e. widen, the curvature of the textile element. As discussed earlier in the application, Figure 1 illustrates a jig set up to adhere a textile carrier element to the shaped textile element so as to incorporate the shaped textile element into, or to directly create, a supportive textile. The jig 12 and a textile carrier element 14 are shown in Figure 1 and are shaped to work in conjunction with a W-shaped textile element, similar to that shown in Figure 9a or 9b. As already explained, the jig 12 includes a positioning member 20 in the form of a heat resistant sheet 22. In the embodiment shown, the sheet 22 is made from a sheet of silicone rubber having 2mm thickness. The heat resistant sheet 22 may take any other suitable form, such as a metal sheet, e.g. aluminium. Moreover, the heat resistant sheet 22 includes an aperture 24 formed as a window (i.e. cut out) through the heat resistant sheet 22 which is shaped to correspond to the shape of the W-shaped textile element 110. It will be understood that, depending on the support requirements of the resulting supportive textile, there may be any number of apertures 24 in any shape and in any configuration relative to one another. In other embodiments of the invention, the aperture 24 may be a recesses (i.e. not formed all the way through) formed in the heat resistant sheet 22. In further embodiments, the aperture 24 may be integrally formed in the jig 12. The jig 12 further includes a heated plate 26 which is moveable to contact the positioning member 20 so as to apply heat and pressure to the positioning member 20. The jig 12 further includes a three position indicators 28 that are positioned at three different points relative to the aperture 24. The position indicators 28 are made from Teflon® but may be made from any suitable material (i.e. one which does not get damaged or warp under the heat applied by the heated plate 26). The position indicators 28 are visually distinct from the heat resistant sheet 22. The position indicators 28 may instead or additionally be tactilely distinct from the heat resistant sheet 22. The method for using the jig includes locating the W-shaped textile element in the correspondingly shaped aperture 24 of the jig 12 so that the adhesive outer layer is exposed. The method also includes removing the backing layer from the adhesive layer and this step can be done before locating the textile element in the correspondingly shaped aperture 24 or after. Next, the method includes positioning the textile carrier element 14 relative to the shaped textile element so as to cover the adhesive layer in a predetermined configuration. This step additionally includes using the positioning indicators 28 as a guide for where to position the textile carrier element 14 relative to the shaped textile element. The method then includes pressing the heated plate 26 onto the aligned textile carrier element 14 and the textile element so as to apply heat and pressure to thus activate the adhesive and thereby adhere the textile carrier element 14 to the shaped textile element. The pressure and heat that is applied in this step is dependent on factors such as the material of the textile carrier element 14 and the shaped textile element and the type of adhesive that is used. As an example, the heated plate 26 may generate a glue line temperature of 150-160C for a period of 15 seconds to 20 second at a pressure between 6 and 8 bars. Next, the method includes forming the adhered textile carrier element 14 and shaped textile element into a supportive textile. In this embodiment, this step includes securing the adhered textile carrier element and textile element to a brassiere. This may be done by any suitable means, e.g. sewing or by using an adhesive. In other embodiments, the textile carrier element 14 itself may be formed into the desired textile or garment (i.e. there is no intermediary textile element).