)https://www.brakecalipersolutions.com
https://m.facebook.com/brakes4u/
Very handy and a very nice/knowledgeable person to deal with.
Less than a tenner for a kit to do both sides and rebuild of both my own calipers would have only been £80/90. (This was me calling in with no postage so check prices before for yourself)
All sorts of other caliper kits and servicing is available
Perhaps this could be added to the wiki?
Cheers Andy