The UK is the most obvious choice for you, but if you're willing to cope with a few language problems it would probably be more interesting to go to another country. Courses should be no problem, masters are always in English as far as I know.

Scandinavian countries are particulary known for their excellent English and politeness (so that you don't get the "speak [national language]!"
Personally I think that if I'm ever going to emigrate it will be to Sweden.