I just got my M1 visa. You need to go down to London for an interview. The visa costs £65 and there are 3 forms which you need to fill in. You'll have to go down on a week day as the embassy is closed at the weekends.
I'm booked up for Naples Air Center in Florida for this summer, they seem to be very reputable, i've spoken to students who have gained their PPL with them and i've heard no bad reports at all.
You should check out their website and consider it. A 3 week course (with your accommodation) costs around $5500 (Around £3000)
Give me an e-mail if you want anymore info
[email protected]
Cheers