During a period of holding at Linton-on-Ouse in the late 1970s, prior to my posting to AFTS, I worked in the line office, allocating Jet Provosts to flight crews. The number of aircraft used to almost fill the apron. There were three training squadrons (or was it four?), each with a senior and junior course, probably with about twenty students on each course (before the 'chop' took quite a few).
I visited Linton-on-Ouse today and I saw a total of two Tucanos.