chevvron,
You are kind of correct, NATO (or the US Navy I should say) were in charge of the base until the early 90s, I think it was 93/94 they handed it back to MOD.
Since then, ATC, TA, UAS mainly use it, it's got a private security firm guarding it now and most of the buildings are falling apart, there was one block of accomedation which wasn't bad actullay...