Abstract: A composite strip for use in the manufacture of superconducting windings consisting of a thin layer of insulating material situated between two layers of metal. The composite strip may be used to form the winding on its own, or it may be used in conjunction with a separate strip conductor. If it is used on its own, one or more of the layers of the composite strip is made to be superconducting. If it is used with a separate superconducting strip, then the metal layers can be made of an alloy such as to assist in thermally stabilizing the superconducting strip. A winding made in such a manner.