A wind turbine blade bushing system for arrangement in a root end of a wind turbine blade, the wind turbine blade bushing system comprising: - a threaded element for retaining a mounting bolt for a wind turbine blade, the threaded element being formed from a first material; and - an anchor element for arrangement at a root end face of the wind turbine blade, wherein the anchor element acts to at least partly retain the threaded element in the wind turbine blade, the anchor element being formed from a second material, - wherein the first material has a higher strength and higher fracture toughness than the second material, - wherein the threaded element is a bolt-receiving nut for receiving a mounting bolt for a wind turbine blade, - wherein the anchor element comprises a tubular member for arrangement at the root end of the wind turbine blade so as to retain the tubular member in a wind turbine blade body, - wherein the tubular member acts to at least partly retain the bolt-receiving nut in the wind turbine blade, - wherein the tubular member comprises a first open end to receive a bolt, whereir an internal chamber of the tubular member comprises a first constriction between a location of the bolt-receiving nut in the tubular member and the first open end so as to retain the bolt-receiving nut in the tubular member, and - wherein the tubular member comprises a second end opposed to the first end wherein an internal chamber of the tubular member comprises a second constriction between the location of the bolt-receiving nut in the tubular member and the second end so as to retain the bolt-receiving nut in place relative to the second end of the tubular member, whereby the bolt-receiving nut is arranged in an interior part of the tubular member, and such that the first constriction and the second constriction in conjunction are adapted to retain the bolt-receiving nut. - a threaded element for retaining a mounting bolt for a wind turbine blade, the threaded element being formed from a first material; and - an anchor element for arrangement at a root end face of the wind turbine blade, wherein the anchor element acts to at least partly retain the threaded element in the wind turbine blade, the anchor element being formed from a second material, - wherein the first material has a higher strength and higher fracture toughness than the second material, - wherein the threaded element is a bolt-receiving nut for receiving a mounting bolt for a wind turbine blade, - wherein the anchor element comprises a tubular member for arrangement at the root end of the wind turbine blade so as to retain the tubular member in a wind turbine blade body, - wherein the tubular member acts to at least partly retain the bolt-receiving nut in the wind turbine blade, - wherein the tubular member comprises a first open end to receive a bolt, whereir an internal chamber of the tubular member comprises a first constriction between a location of the bolt-receiving nut in the tubular member and the first open end so as to retain the bolt-receiving nut in the tubular member, and - wherein the tubular member comprises a second end opposed to the first end wherein an internal chamber of the tubular member comprises a second constriction between the location of the bolt-receiving nut in the tubular member and the second end so as to retain the bolt-receiving nut in place relative to the second end of the tubular member, whereby the bolt-receiving nut is arranged in an interior part of the tubular member, and such that the first constriction and the second constriction in conjunction are adapted to retain the bolt-receiving nut. <EOS>