C.S.C. was a British automotive brand that operated between 1952 and 1955, founded by Wrigley Moton under the Gainsborough Engineering Co. Ltd. The company was based in Middleton, Manchester, and focused on the development of a sports car prototype characterized by its aerodynamic design.

The C.S.C. sports car featured a tubular chassis equipped with all-independent suspension, utilizing wishbones and transverse leaf springs. Initially, the prototype was powered by a 647cc B.S.A. vertical twin motorcycle engine, which was coupled with a B.S.A. four-speed gearbox, transmitting power to the rear wheels via a chain drive. Plans for production models included a more powerful 750cc Royal Enfield engine paired with Albion three-speed transmissions, with a projected top speed of 75 mph (120 km/h).

By 1955, C.S.C. had made advancements in its design, creating a chassis compatible with Austin A30 components. This iteration was intended to be fitted with a Rochdale fiberglass body, although the brand ultimately did not progress beyond the prototype stage.