From the programme blurb. "He (MacColl) called it "The Critics Group".

He didn't. The name was coined by Charles Parker in response to the group's technique of mutual criticism and accepted via the consensus of the whole group. I'm not going to get off my backside at this time of night and check. However, I'm fairly sure that if the producers had bothered to check Ben Harker's biography of MacColl, or Set Into Song (Peter Cox's book on the radio ballads), they would have found the same confirmed.

I'm beginning to understand why this programme caused so many problems.