Bristol don't offer full-time courses.
As far as I know the only ones in the UK that do are:
Atlantic
BCFT
Cabair/EPTA
Glasgow College of Nautical Studies
London Guidhall
OATS
I would suggest you visit all those you would consider using. Look round, ask to talk to students, ask to look at the notes (they vary in quality). Ask about class sizes.
I have to declare an interest as I work for BCFT, but I also have been known to fly military helicopters, and wish you the best, however you achieve your licences.