If you look on the uk caa website - safety regulation group - flight crew licensing - you will find a list of schools which are accepted as jaa fto's by the uk caa
some of these schools are in the US and africa, to name but 2 places, and all the addresses and phone numbers are included
I did my ppl in the uk in 3 weeks so the weather isn't always the problem it's made out to be......
I'd advise you to go overseas to learn (good experience/weather and cheaper) but budget for a few hours on your return to get used to european/uk/roi radio and weather
Best of luck and up the Republic!