Just in case anyone is thinking of doing it, it is quite easy. Only trouble was getting the caliper slider pins out as there was no grease left! VERY tight, but all sorted.

Old Discs and Pads (not too bad, but not too good either)

New discs (Mintbitz performance discs) and pads (EBC Ultimax):

With discs and pads fitted:

Also changed the airfilter which was really filthy!! (that's obviously the old one in the bag)