I would second EFG at Biggin. Of all the PPL's who trained at Biggin that I come across, EFG's are without exception the most spot on.
Biggin's not cheap, but by God will you get some experience (last time I flew in there to see Singh I was Number 2 to an RAF Jaguar with a G4 behind me on the ILS). Can't think of many aerodromes where you mix it up with that kind of traffic!
Good luck either way.
John