I was at a craft fair and saw some very impressive leatherwork by a Mr R.Carter. To quote from his business card "Traditional English Leather - makers of cases, handbags, wallets, etc." The original work he had done was outstanding. I asked about a repair to my Rolleiflex case and he said he'd be happy to study the job. Having seen what he'd made, I have little doubt that a camera case would be relatively straightforward and that he'd work to a standard rather than to a price. I've yet to follow up on this, but he's based near Okehampton, Devon and is on 01409 221384.
Best wishes,
Steve