A lot of people recommend Professional Air Training (PAT) so the training/service must be fairly good.
I personally wouldnt train there, because I found their staff extremely abrupt and rude at the Flyer show I attended a few months ago, sadly I couldnt remember their names, otherwise I would have complained, Collinson rings a bell but im not sure.
I have a friend who trained with CATS then Professional Flight Training (PFT), he didnt have any problems with them and works for Ryanair now.