Chris's number is 447747162018. He's happy for people know about him, and we're all very pleased with the work he's done.
Unfortunately, costwise, my husband has 'filed' the papework so I'm not sure what the mast step work (without the repainting of the topsides which Chris also did) came to, but others have commented. If you've got no sign of a crack on the outside then definitely worth getting in a season's sailing first before you put her out of action.
Good luck,
Janie