ORAC:
I was told that the IAF (or at least parts of it) have promotion to gp capt on time rather than in competition. When dealing with other nations, they seem to be more interested in the experience/time you have than your actual rank.
Wensleydale:
WRT controlling in the UK, IAF FCs will not be operating on their own tickets. They will not be controlling at all outside segregated airspace, and will be screened throughout by fully-qualified FCs.
STH
Eddited to add:
Sentry Agitator beat me to it, but only just!