Tony,
I have had some excellent camera case repair work done by a chap I know not far from me in Plymouth. He's repaired an Argus C3 case and a Revere Stereo case recently and I can't speak highly enough of his work. I don't know whether you'd want to go as far as sending your case by post, but if so drop me a private message and I'll send you his phone number (he's in his 80s and doesn't do email!)
Best wishes,
Steve