https://www.youtube.com/watch?v=YOegHC40viY has a recording of Trevor Crozier singing "Dead Dog Scrumpy", presumably from the "Trouble Over Bridgewater" album in 1977, though it lacks the album's spoken introduction (where he says that originally he wanted to call the song "The Scrumpy Drinkers Farewell to his Gut", but that "The BBC wouldn't like that, especially on Women's Hour". The posting by "Stewie" on 3rd March 2004 at 9.06 pm has the correct lyrics, except that in the final verse Crozier sings "Ask for Dead Dog Scrumpy" rather than "Ask for Dead Dog Cider".

It is a sad coincidence that both Trevor Crozier and Adge Cutler of the Wurzels (another West Country, or perhaps I should say "Scrumpy and Western", band) died in car accidents. Crozier died in Malawi in 1995 (see http://www.scrumpyandwestern.co.uk/trevorcrozier.php) and Cutler died at Chepstow in 1974 (see https://en.wikipedia.org/wiki/Adge_Cutler).