JENKINS - the Uppinghamian was a Balliol man I think, but the Etonian was Cambridge - can't recall the college. The Harrovian was probably old-style (Flight Cadet) Cranwell.
SOAF then seems to have been a bit posh, there was also an OMT (Old Merchant Taylor) Strikie who subsequently did quite well: how on earth did ruffians like thee and me flourish there???
Have just realised from the OP - we are indeed "old Codgers"; 'twas about 45 years ago we were there......