Please refer to the overview article Vickers for other companies known by this nameVickers plc was the remainder of Vickers-Armstrongs after the nationalisation of three of its four operating groups: aviation (as a 50% share since 1960 of British Aircraft Corporation (BAC) in 1977), shipbuilding (Vickers Limited Shipbuilding Group in 1977) and steel. It was purchased by Rolls-Royce plc in 1999, and the Vickers company name became defunct in 2004.