Why do they (the BBC) always drag out tame leftie Billy Bragg for programmes such as this. There are far more knowledgeable people around who could do the job.
I was once unfortunate enough to see part of a programme where the bard of Barking sang Woody Guthrie songs to which Woody hadn't put any music. I found it quite amusing when he sang a well known song that pre-dated Woody to a tune that he - Bragg had composed himself.

As for Donovan what has his 1960s pop song noodling got to do with folk music?

Well, you did ask for comments

Hoot