The Westinghouse Brake & Saxby Signal Company Ltd of London, Chippenham and Kingswood (Bristol) was renamed for simplification the Westinghouse Brake & Signal Co Ltd in 1935. The company were manufacturers of power and mechanical signalling equipment, compressed air and vacuum brakes, rectifiers and rectification apparatus, power operated tub handling plants for the mining industry, brakes for road transport, and pneumatic control equipment. From the 1950s to the 1970s overseas subsidiaries were created in Australia, South Africa and Australasia. In 1979 the Westinghouse Group was acquired by the Hawker Siddeley group as a wholly owned subsidiary.