The change at Cranwell was before 1973. By 1971, the University cadetship scheme was in full flow, and the Cranwell cadet scheme had ended. The University Cadetship started with a quick (4-6 weeks?) initial Officer Training Course at Cranwell, which the guys (yes, all male) left as Acting Pilot Officers, then 3 years at a University, with UAS membership and Chipmunk(later Bulldog) flying. This was followed by a "proper" IOT course at Cranwell, then a JP course to wings standard.