I became a Flight Staff Cadet with 637 at Gaydon in 1971 and stayed with them until I moved North and joined 632VGS in 1989.
637 was a 'new' School and formed at Gaydon in 1966. The field was eventually sold in 1974 but we remained until 1978, when we moved to Little Rissington.
We later converted to the Venture and I remember that I spent most of the last two weekends upside down as I was the last aerobatic qualified Instructor present.
I used to re-visit LR frequently during the Vigilant era, ferrying aircraft around to support Course weeks and other events.