I only just saw this thread, thanks to Astir 8 pointing it out in the "Air Cadets Gliding" thread. Fantastic to look through the preceding posts and those fine pictures. I note that at least a couple of the posters are from Peterborough, and I am yet another. So I was in 115 Squadron ATC, and did my gliding at Hawkinge on the Cadet Mk 3 in September/ October 1958 (WT918 and XA 282). Instructors Matthews, Mares, Ladley, Whittenbury. Soloed in XA282 (that still exists). I had already done a PPL at Cambridge on Marshalls' Tiger Moths (same sort of glide as the T31!). Went on to do more gliding in the French Alps and pursued my powered flying to FAA IR level. Stopped flying in 2016. Great thread.
Laurence