I too was a resident at the Potters Bar folk club (Pre Enterprise) in partnership with a guy named Frank Beer. We were also residents at the Peahen in St. Albans, where a young lady named Maddie Prior used to sing from the floor. Whatever happened to her? (Just kidding. I'm not that senile. Yet.)
Does anyone remember the King and Queen behind Goodge St. station on Monday evenings? Alex Campbell was the resident and all kinds of people used to drop in.(This club might have been mentioned already, but I can't be arsed to scroll through the whole thread)