The best school used to be based at Redhill, run by Bristows helicopters. Unfortunately, they moved to the US, and are now located in Florida: some of the instructors moved out there, and I know of a few people who gained their licences. They had lots of praise for the school, and subsequently have been hired by Bristows flying out of Aberdeen to the rigs in the North Sea. The price was around £35K for the JAA licences. My understanding is that heli pilots are in demand these days.