Thanks folks, i got the new discs & pads from Godspeed, so i've emailed Ian and awaiting reply.
The pads that were in were fine, like new in fact! The discs were warped so that's the reason i'm changing them out. Did manage to get the piston going a little but to be honest they are pretty bad with rust and scored, i'd rather get the calipers replaced then at least i know that's it done properly, might even go for some Goodridge hoses while i'm at it.
Just 1 other question, any recommandations for Brake Fluid???