Al R,
Thanks for bringing up these wonderful memories from six years back ! I have posted on the "Gaining a RAF Pilots Brevet in WWII" for the last three years; these old posts are well worth reading and I'll flag them up there.
Sadly, I did not venture "on line" till Jan '12 (although I'd got my first laptop six months before). Pity, because I might have helped a little, I think my old friend Flt Lt Niel Ker was secretary of a 20 Sqn Association around the '80s.
We had been together on 20 Sqn at Valley (Spits and Vampires) from '50 to late '51, when they disbanded (to reform later on Harriers).
The "W.O. ranks" mentioned by one of your contributors would be the short-lived system of "Four-Star Hennessey" ranks for NCO aircrew (it lived on as the Master Pilot/Nav etc. for a long time).
D.