I know for a fact that Marshalls Aviation are putting together or may have already put in their bid, NATS as well.
Apparantly, the MOD themselves are putting forward a bid but the concensus of opinion is that they don't and won't have the staffing to service the contract.
Good money and loads of time off but I wouldn't rate the job or the customers as the most demanding / exciting in the world.
Still, it's recently been a feeder station for a regional airport in East Anglia -as well as being a depository in the opposite direction