They were still using them in the late 70's! (78 was my one and only UAS chippy flight)
I must learn to engage my brain before typing - I meant to say Tiger Moth, as Jerico referred to in his first post.
I was lucky enough to get 170 hours and a PFB on Chipmunks in UBAS in the 60s (hence my query) and then a few years ago, I had one flight in a Bulldog at Old Sarum. Nice, but I still prefer the Chippy.