Don't really remember 'Bold Sir John', but their C & W act was 'Big Jim Jehosophat (Ronnie C) & Fat Belly Jones (Ronnie B).
They did a number called 'The Stuttering Bum' with lots of lyrics in the ' F-f-f-f-feel the way I do' style. I suspect Bob Williamson of Bolton may have had a hand in it.

FC