In the early days of aviation there were numerous producers of aircraft, particularly in the years coming up to the Second World War. Such as R. J. Mitchell's Supermarine, also Hawker, Avro, Fairey and de Havilland to name a few. As the years progressed some of these popular names were swallowed up by takeovers by bigger companies. A classic example of this is English Electric, taken over by British Aircraft Corporation (BAC). Now known as BAE Systems Ltd.