Guy - unfortunately the main dealer in the UK for GoldTone banjos is down in Faversham, in Kent, maybe 200 miles from Hull. I think it's the only place Jane could get a look at the CC OT.
If Jane comes to Sewerby Hall, Bridlington (not too far from 'ull) over May day weekend she can get to see a good few open back banjos being played by good players - as well as guitars, fiddles etc. They're all friendly people and free with advice. If she brings a tent she can camp free all weekend, and join in the sessions.

Ray