Met up with SteveP earlier and in less than 48 hours since raising the thread, I am now the proud owner of a rear badge reversing camera.
Whilst I shall be spending the rest of the weekend driving backwards to test it out, I would like add to the existing plaudits of SteveP's skills.
Steve has a massive knowledge of all things VW and went beyond the call of duty to skillfully undertake the fitting work despite my constant stream of questions whilst he was trying to work. He also checked my car via the VCDS (?) and put my mind at rest that I didn't have any other nasty gremlins in terms of outstanding error codes. Ultimately, he cares about the work in hand which perhaps wouldn't be the case if it was just another job for a technician in the local VW garage.
Thanks again SteveP for all your help and to those who kindly contributed to this thread.