Pagid - very good pads. Drew on here used to supply them at very good prices. Send him a PM and see if he can still source them.
Performance Friction are another good one - Alyn at AS Performance in Birtley does those AFAIK
I had Ferodo DS2500's on my rears and I really liked them - they are expensive and people say they are dusty, but I never noticed as I cleaned the car so much!