Well I am sorry for the confusion caused. I had no idea that I was putting my head in a hornets nest like this. I had thought that informality was the way of the Mudcat but I will obviously need to make sure of my definitions in future.
The article confused me also but I used only the "terms" that Mr Cooper used and I hoped that I would get clarification from Mudcatters.
I have absolutely no axe to grind as to the various definitions of "Folk", "Americana", "Old Time" "Pop" , "revival" or what you will. I merely sought the opinion of Mudcatters on this latest musical phenomenon in the UK.