Pink Flyer,
Think you've got an extremely good case which could well be resolved by a simple phone call as opposed to a stream of letters. 5F6B is spot on with his recollection of the Scottish 4 year degree case. Also the new pension is coming into service yet you cannot be forced onto it if it is not the one you signed up to when you joined.
If need be I'm sure a contract lawyer would wipe the floor with the RAF on this one.
I believe the initial bit of paper you sign to join up refers your terms of service to (something like?) PAM AIR xxx? Well worth checking the initial bit of paper you signed and the relevant PAM AIR (if you can get your hands on it.)
Please let us know how you get on.
S15