I'm not sure the acts playing Cambridge are aimed at serious enthusiasts for folk.

Perhaps it says more about my own tastes than anything else, but when I first got involved in folk "Folk on Friday" with Jim Lloyd was required listening, and everyone I knew listened and talked about it. Now I only listen if I happen to be in the car at that time. In fairness, there will usually be something I like, but plenty more that I'm fairly indifferent to. "Middle of the road" about sums it up, but I don't agree that's typical of the UK folk scene in general, and as I said earlier it doesn't reflect the music I listen to and participate in.