Coventry - Filton - Cranfield - Coventry perhaps?
Both Filton and Cranfield are not mega expensive, are easy to find, have nice big runways and ATC that is very accustomed to dealing with student pilots and their endearing ways.
Make it as easy as you can. Its a big hurdle and you really don't need to set the bar any higher than necessary. Thats what hour building is for in the coming years.
Good luck and don't forget two things:
1) Get the paperwork stamped
2) Ask for a radar service every chance you get and tell them the minute you think you might be er, maybe, slight, Ummm unsure of position... else you end up flying through drop zones etc.
Good luck and enjoy.
WWW