From Andy Kershaw (on Facebook)

This is a disgraceful and completely unnecessary decision. Mike has built up this fine show, and its audience, from nothing. He is an excellent broadcaster, a true enthusiast, and he knows his stuff. To drop him is a kick in the teeth for Mike - and his loyal listeners. I would have hoped Mark Radcliffe - an outstanding broadcaster himself, a nice guy, but not a noted folk music enthusiast - had the integrity, solidarity, principle and moral backbone to refuse to replace Mike - who didn't need replacing. Alas, it seems not.

He's got a lot of support.