BA123 - Just out of interest - what little things?
As IO540 says, there's plenty of places to train the US - California seems to get good reports.
Regardless what school you go to - if you get an instructor you don't get on with - ask to be taught by, or fly with, someone else - instructors don't take it personally - however, don't blame the instructor for your own shortcomings (I've seen a bit of that also, and that usually degenerates into an unfounded attitude against the school)
And yup - provided you can block off 4 weeks you can do it in the UK. I went to the US because of cost - up in Aberdeen, when FAS ran the show it was £129+Vat per hour + £18 landing fees, so it would have been much much more to complete the PPL here. Now that Grampian flying club are the only one there, it's £169 per hour + £18. EEEk! To say nothing of the Wx!
But if you're down south, with better weather and cheaper rates, you can probably do it more reasonably.