Chap I believe the only place you can get a class 1 is at Gatwick but it is only for the first time.
It cost £400.00 and if you want FAA as well it's another 15 or 25 smackers on top. I can tell you when I get the bill. I went this morning.
It takes about 3-4 hours and appointment times are 0830 or 1245. If you want to get FAA you must ask for Dr Hunter.
Hope this helps