Off the BBMF website
WK518 has been with the BBMF the longer of the two Chipmunks, having been delivered to the Flight from No 1 AEF at Manston in April 1983. This aircraft first entered RAF service in January 1952, going to the RAF College at Cranwell to be used for the elementary flying training of pilots. Other units who have operated WK518 include the University Air Squadrons (UASs) for Liverpool, Manchester, Cambridge, Hull, Leeds and London Universities, and also the RAF Cottesmore Station Flight. WK518 is now painted in the colours it actually wore when it served with Hull UAS in 1961.