John used to play with Roger Watson. It may be that one prior posts here meant "Watson" when they said "Wilson". Roger says that he helped write "Pull Down, Lads", and I understand they recorded it together at one time, in a group I can't remember, but starting with "M", IIRC.June Tabor gives credit only to John on her album. I dunno the truth of it.
Cheers,
-- Arne Langsetmo