Depends on your timescale, ability to travel and finances.
If you have little free time and want to get on with it then do it intensively somewhere with nice weather, get it wrapped up and get on with the real learning and flying (which happens post PPL - just as it does in a car after you get your driving license).
If you don't mind waiting for a replacement instructor, weather etc... then continue in the UK.
You will hear both sides of the argument here but IMHO the option of going abroad and getting some intensive training is best. You will learn in a newer, better equipped aircraft in busier airspace and for less money.
SB
