Spot-on Engine. If the gliders were on the CAA register they would still not be airworthy as the paperwork is in a total guddle.
I also agree about air experience flying not being RAF remit. In the case of gliding, the BGA has clubs all over the UK who are teaching youngsters to fly and sending them solo as young as 14. Of course there is nothing military about a civilian club apart from (at my club) a few guys in ex-military flying suits hanging around at the launch point. That's fine, the purpose of the club is promoting flying.