As some of you guys are in the UK try Doris. Department of Research and Information Services at the RAF Museum Hendon.
[email protected] tel 020 8358 4873
They are very helpful, if a little slow to answer on obscure queries. But this one ought to be fairly easy from the leads already given.
My daughter operates in and out of London a lot and enjoys digging up the past. She loves Hendon and if no-one is looking pats a nose here and there for me.
Give them a ring or I can ask herself to look up some facts and see how much meat they have on the bone.