Central Flight Training at Tatenhill have an excellent reputation, and superb instructors. I trained with them and learned a great deal, and have no hesitation in recommending them on that basis. Their standards are very high and their personal investment in tailoring their training to the individual is worth a lot.
Leicestershire Aero Club is another good school for FIC. A number of my friends did their training here and went on to do really well, both as instructors and further in their careers flying for airlines and corporate jet.