Sadly you protectionist Poms dont allow anyone else to conduct the training... sadly to date only the odd compnay in the States can conduct JAA training.
There is no where else. There are a couple of freak exceptions... CTC here in NZ... but they have their own examiners (its the Easy Jet cadetship scheme) etc etc
To date the only company I have heard of that has even made a go of it is the West Australian Aviation College in Perth.
Good luck... its a great place to fly here... and cheap... if nothing else come have a holiday... I believe distance learnig etc for the chageover when you get home gets more user friendly all the time.