Thanks, Mick. I've been in touch with Joe Stead and he's been amazingly helpful on getting at least a framework to start filling in the details on the whole Alan Green/Folk Heritage tale. I also do have your quote on Alan from your on site in my files:

'Alan Green was no slouch, but he insisted on a completely "dry" sound for folk records - a somewhat old-fashioned way to lay down tracks, methinks.'

Steve Canner