If you're so keen, why not apply to the RAF for one of their 'aviation officer' posts which are advertised in Flight from time to time; may even be in RAF News, available at most newsagents. You get commisioned as Flt Lt RAFRO and as far as I know, you hold an RAF C of C rather than CAA Licence, but prior military experience is not required.
I did 20 odd years military ATC on a civil licence, and can verify that most of the time it's more exciting; the problem with standard RAF airfields is just that; they aim to be as standard as possible between units so that when you're posted, you take the minimum time to go solo.
By the way niknak, I thought SERCo had lost Wattisham just as they lost Gibraltar (but not to the same provider) and what about Netheravon?.
radarman; I'd be interested to know where you get your info about Gib; as far as I know there's a queue of NATS controllers champing at the bit to go there!