It is a reference to the 70's "Britcom", Are you being served?
I found a better picture of him. I actually was thinking this would be good church wear as well. I'd change below by giving him a higher Edwardian collar.
Thanks, guys -- as it happens I have the DVD boxed set, but it's still in shrink-wrap.
Perhaps it is indicative of my domestic situation that I may have confused him with Captain Feathersword ...