We have been contacted by Chris, who is now Chairman of the Norton Owners' Club:
Having bought a Norton Commando myself in 1976, and then living around the Croydon area, I required frequent visits up to South London for parts. I had a standard circuit that included a very short hop from Pride & Clarke's round the corner to Gus Kuhn's and the shop certainly benefited from my custom on a number of occasions.
I also attach a photograph of a machine taken at Montlhéry in 2003 on the occasion of the last festival there before they pulled it all down:-
Is this your bike, or do you recognise it?