I can recommend the CPL training at Leicester. They are good on price, plus aircraft availability is fine. The standard PA28s are basic, but the PA28R-201 is nicely appointed and easy to book.
The instructor has been mentioned on here previously since he is also a very good aerobatics instructor and teaches the FIC. He seems really relaxed, but he is a stickler for getting it spot on - "that'll do" will not do. He'll also make sure that any weak points are fixed.