Metropolitan-Vickers F.2

The Metropolitan-Vickers F.2 was an early turbojet engine and the first British design to be based on an axial-flow compressor. It was considered too unreliable for use during the war, and never entered production. The potential of the engine and the investment did not go to waste, however, and eventually resulted in an engine design that was passed on by Metropolitan-Vickers ("Metrovick") when they left the gas turbine business to Armstrong Siddeley; as the Sapphire.