I had the pleasure of a few flights in Chipmunks at Ouston in 1969, as it was the local AEF base for my school CCF.
Chipmunk WB738, flown by an instructor named Flegg, is one combination that appears in my logbook. I'd love to think they are both still flying!
Tremendous fun, especially as that instructor had a very liberal interpretation of what a gentle AEF flight should consist of!
I tried to do my RAF Special Flying Award there, but got sent to Carlisle instead, to fly SpamCans.