Speaking from experience, I did my PPL in Florida and was very pleased with the training. They said I could do the course including night rating and all theory exams in 23 days - I did it in 19. They quoted me £3500, I paid them £3660 so not at all bad. Accommodation was included so my only other expenses were flights out there and living costs. I was very pleased with it initially, but when I cam back to fly over here, I got quite a shock to the system. You have to be able to navigate properly and the radios are very different indeed. I spent the money for a few hours orientation training which was definitely the safe option in hindsight. I think it is fair comment that doing most of your training abroad will not stand you in great stead. I have mentioned the RT difference, which I guess aren't too bad to get your head around. But it's the other little quirks that you get over here which greatly increase your workload like MATZ penetrations, significant amounts of controlled airspace, having to deal with transition levels etc. - all in themselves small things to consider but they do make things quite a bit tougher (well I found it tough anyway!). Maybe try to budget to do say the last 20 hours of your hour-building, your CPL and IR over here if you can. You will be very confortable with UK airspace and procedures that way. Just my 2 pence worth.