To answer Scrump's query of 14 March, it was indeed The Dixie Ramblers: Dave Betteridge (banjo) and Derek Glasspool (guitar). They occasionally used a bass-player (acoustic) whose name escapes me.
The Dixies appeared on the very first Forest Tracks album, FIRST TRACKS, and this is now available again on CD, with original cover and sleeve-notes, from Forest Tracks. Also on this album: Helen Woodall, Dave Williams, Ted Duckett and Harmonious Blacksmith.