Our seniors continue to amaze me, busy with their erudite posts long after this youngster is asleep
Gentlemen, we salute you!
Stanwell in Oz asked about the Primary Glider ratio: between eight and 16 to one. The ATC machines were copies of the pre-war German glider which trained the Luftwaffe and were built by Elliotts of Newbury from 1947. Fascinating article in Wiki at
https://en.m.wikipedia.org/wiki/Elliotts_Primary_EoN