If you can get him to travel, Roy from Wychanger Barton. I used him when I was in Devon and was impressed, now I've moved to Cornwall I hope I can get him to come down here!
Jodie hooper, based in north Cornwall/Devon but often (every other week) comes down to Cornwall. Fitted my very difficult tbX (short back and often changing shape).
I'd second Jodi Hooper, she's fantastic. Have had some awful experiences with other saddlers down here, but Jodi is brilliant. A big thumbs up from me.