As long as the few years of brain activitiy does put you over the age of 28 (I think thats the cut off now) then you should be ok. Suggest you try the NATS website for more info. If you get a selection test with them they send you a reading list. Obviously there are other ATC providers to consider as well, but I'm sure those more knowledgable than myself can give you some pointers. Also you say you passed RAF pilot selection tests, have you considered then becoming a RAF controller? Whatever option you go for, good Luck
