Neil507
I have hired many ex RAF ATC people and I think you'll find your application for airline ops jobs will be considered on the back of your present experience. That said, you will need to do some studies- a new UK based Flt ops/dispatcher course is in the offing early in 2010, watch here and/or contact Bristol Ground school for details.
You'll find a wealth of info on ops training here on Pprune- do a few searches.