Hi Tinsparrow
I think you've had some good advice here. I have flown in both Blighty and the US, and I honestly believe that if you're going to be living/flying in the UK, then it's probably best to start your PPL in the UK. I do most of my flying in the NE US, where the weather and scenery is very similar to the UK, however, flying here is a lot more expensive than the schools in the popular US destinations such as Florida and California.
I think your best bet as recommended by other members here is to go abroad (US, Canada, South Africa etc.) after you finish your PPL to expose yourself to foreign flying practices, and more importantly to build those cheap hours!
Best of luck with your training
EinNY