The problem with most comments on here is that they are in the main only aircrew related and in general ignorance of anything else outside their Mess.
Most aircraft trades have been decimated for years but denied by PC statements on-Station, within MOD and at Parliament. Even Contractor help is withdrawn in some places - I assume it is a similar trait across all the technical and support trades. The current dire straits are perfectly illuminated by the call for local ex-tradesmen to join up again as “Dads Air Force” Recruits. The RAF Trick was missed years ago by commercial attitudes to MOD training requirements - i.e. training budget is reduced first.