The CVA-01 aircraft carrier was to be the first of a class of three fleet carriers that would have replaced the Royal Navy's existing aircraft carriers, most of which had been designed prior to or during World War II. CVA01 was intended to replace HMS Victorious and HMS Ark Royal and it was hoped CVA02 and CVA03 would be approved to replace HMS Hermes and HMS Eagle.
Due to the 1966 Defence White Paper the project was cancelled, along with the proposed escort Type 82 destroyers. Inter-service rivalries, the huge cost of the proposed carriers, and the difficulties they would have presented in construction, operation, and maintenance were prime reasons for cancellation. Had these ships been built, it is likely they would have been named HMS Queen Elizabeth and HMS Duke of Edinburgh or the Invincible class.