When I left in 1996 as a "Spec Aircrew Flt Lt" I received a Formal and a Personal letter from the Air Secretary. I also had a formal letter from (and a personal interview with) the AOC.
I opted to leave in a major Redundancy scheme. If it could be done then; I would suggest that there is no reasonable excuse (given the much reduced size of the RAF) for it not being done now.