tryed halfords?
they got a list in there of what you need.
my rears cost £17 and i done them myself its a peice of cake.
all you need is an alan key, hammer, and long nose pliers.
release the 2 nuts with alan key
beat of the caliper with the hammer
then turn and push the break piston clockwise with the pliers....job done in about 30-40 mins