Im no expert but steer clear of the brokers (third parties) the lad that was on training with me paid double and got one less day training than I did. He also got messed around a lot.
Personally I arranged my own medical, theory, hazard perception and case study as it was easier. I paid a local training company £1130 for 5 days training, mod 4 and practical test all in it cost me £1240.
Obviously if you don’t pass everything first time the total cost goes up. Just make sure you know the score before you pay anyone there’s plenty of vultures out there.
If I had the time to I would have gone residential with Peter Smythe, as I’ve heard lots of good things and I think it would have made it easier to focus. But I couldn’t afford the time off work.
Good luck whichever way you go.