DKP - I see you are commissioned in the RAF, but I can't work out why that prevents you from involvement with the ATC? Some AEF pilots are still serving, while others who have retired from the Services with a QSP rating or better have a VR(T) commission
AFAIK.
My guess is that you could very easily be taken on by a VGS in your current position. Try asking HQ ATC.
Don't forget the much cheaper (about 45% cheaper at Benson) flying at RAF flying clubs, which once joined, you should be able to continue with on leaving the RAF.