TheAeronaut;
Whitti's contribution is the icing on the cake. I have been researching FTO's for about 6 months now, trying to decide where to go to complete my fATPL+MCC. Still to this day, I find at least one promising looking FTO everyday.
Don't rush, consider all Flight Schools you find, ask for feedback regarding them on the forums.
As long as you don't go to the US (FAA regulations), and providing the FTO you choose to train with in the EU provides JAA/EASA/JAR certified training, it's not going to make a difference whether you train outside the UK. Infact, you'll almost definitely complete it faster due to better weather conditions!