Just to put this into perspective - when the RAF adopted the de Havilland Chipmunk as its ab initio trainer in 1950 it took delivery over 3 years of 740 aircraft.
15 years later in July 1965 the Chipmunk was re-introduced for the ab initio training of direct-entry pilots in the Primary Flying Squadron at South Cerney as a preliminary to initial jet training on Jet Provosts at an FTS.
How many times are MOD going to re-invent the wheel?