Bonus Aviation
One of the guys that was ahead of me at London Metropolitan did their IR at Bonus and have nothing but praise for them. I'm still studying my ATPL written exams at the moment but have no hesitation in going to Bonus to do my training. Went there recently and spent time talking to Jo who was very helpful and she introduced me to Adam and Jem (two of the IR instructors) who spent time with me showing me around the aircraft and explaining the course to me. Both instructors seem to bend over backwards to help you. My friend said that even though they were busy Jem and Adam would start work early in the morning to enable you to get your training in.
Peter Godwin comes very highly recommended as well.
Their price of £15,995 is very reasonable although it does not include approach fees etc., and they cannot really help the fuel surcharge at the moment (you only have to look at the forecourts to realise that).
Definitely my choice of school. Can't go too far wrong with them I'm sure.