Beagle there are rumors that the museum at Brooklands have expressed an interest.
Of course at the end of the contract the ownership of the simulators reverts to the MOD. They will be responsible for the disposal. Hopefully as you say someone will recognise their potential as revenue earners. That said organisations express an interest until they realise the enormous running costs of a full flight simulator, IIRC 180Kw power consumption with the motion running. It certainly make the meter spin quite quickly. On top of that the visual projector tubes are becoming increasingly difficult and expensive to source.