I always believed Trevor Crozier died in an accident some years ago; from this thread, it appears to be the late 1990s. By a sad coincidence another member of a "Scrumpy and Western" band (I am asuming Trevor Crozier sang with the "Yetties", Adge Cutler of the Worzels, was I think also killed in a car accident (or was it a combine harvester?!) though I think this was before Trevor Crozier.

I first heard of Trevor Crozier on the vinyl albun "Giles Farnaby's Dream Band" - I think he is mentioned as being part of the Folk Trip "Broken Consort" (the album content is mostly instrumentals going back in some cases as far as 1651, but there are several songs including "The Helston Furry Dance", which is the progenitor of "The Floral Dance", Pastime With Gopof Company, which some believe was written by King Henry the Eighth, probably while he was writing his little-known book "Making Marriage Work", and "Ratcliffe Highway"), but also have another vinyl album with songs by Trevor Crozier. This contains generally light-hearted songs like "Dead Dog Scrumpy", "Don't Tell I, Tell 'Ee", "Lamorna", etc.