The Kippers really knew their stuff - both the style of traditional singers and the popular repertoire of the folk club scene - which is why their parodies were bang on the button. Although I rather like the Williams spoofs, it's clear that neither he or his writers had ever heard any traditional singing, or even folk revivalists. All of the tunes (Clementine, Lincolnshire Poacher, Landlord Fill the Folowing Bowl, etc) had wide currency outside the folk world and, as Michael says, the words don't sound like any folk song that I've ever heard.

I seem to remember that the Copper Family loved the Kippers' work.