Not sure if you have a club in mind, but if not you can do a search on the
Flyer Magazine website. You should find plenty of options. I'd pick a reasonably local school, but that's just my preference.
As to which school - go to several, take a look around, talk to everyone (FIs, students, bloke on the desk, anyone). They are regulated so they all meet the basic standards, but are they well organized and friendly? You'll be spending a lot of time there (before and after 45 hours flying, plus many cancelled lessons
, plus exams, nightschool....). Will you get the same instructor?
Finally, I wouldn't worry too much about the choice of aircraft unless you've got very strong feelings one way or another. Pick the school, take what they fly.
(Edit: as Genghis mentioned, price is important - but watch out for 'hidden' charges like landing fees etc. on top of the hourly rate)