British Westinghouse Electrical and Manufacturing Company was a subsidiary of the Pittsburgh, US-based Westinghouse Electric and Manufacturing Company. British Westinghouse would become a subsidiary of Metropolitan-Vickers in 1919; and after Metropolitan-Vickers merged with British Thomson-Houston in 1929, it became part of Associated Electrical Industries (AEI) in 1959. Further consolidation saw AEI taken over by GEC in 1967.