Airways Aero Association/Airways Flying Club/Croydon
The AAA had a Chipmunk Mk.22 G-APOY added to their fleet I believe shortly before they had to move from Croydon (Registered 11.9.58 - 08.6.64) so presumably this would have been in operation also at Biggin Hill for a short time before it moved to White Waltham between 1959 and 1965. Perhaps Briani can give impart some more information here. Obviously many of the earlier fleet would have been sold by now.