The RAF certainly knows about maintaining ageing aircraft but given their resourcing and MoD risk-aversion I fear their response would be to deny permission for anyone to fly anything.
Anyway academic now as after decades of pushing airshows away from their venues and out over neighbouring villages in the name of safety the CAA have now come to the conclusion that non-attendees might be at risk.
You would have thought this to be obvious when the best photos from RIAT are taken from Totterdown Farm...