Thanks for the info, JF. I'm actually a member there myself, so know all the general bits. However, the old registrations will be useful, as I'm trying to piece together the history. Not just the facts, but the atmosphere as experienced by students along the way.
G-BNXC is still there, as is John Stockley!
The one major piece of information I'm lacking is what date it started up. We know it was 1954, but not which month.