PAT in Bournemouth. I have been there recently (Oct/Nov 11) and the training is top notch. Their first time (not first series) pass rate is excellent, and the atmosphere is very congenial indeed. Duchesses not glass cockpit DA42s for everything, but don't let that put you off, they're brilliant aircraft to fly.
Wherever you put on your shortlist, make sure you go visit and have a chat with some of the current students.