I have just read through this thread with great nostalgia while researching a book I am writing. I had completely forgotten about the Witches Cauldron, which was between Belsize Park and Swiss Cottage. Thre was an awesome blues harmonica player who hung out there whose name escapes me now. A gang of us also used to frequent a folk club which no-one else seems to have mentioned which was underneath Schneider's Falafel House behind what is now Swiss cottage Lbrary - early and mid sixties - called the Hole in the Ground. I think Jo Ann Kelly was resident singer there, and that Paul Simon sang there on his Outward Bound tour. We also used to be in the audience regularly at the Troub' when Redd and Martin were hosts and Noel Murphy, Johhny Silvo and the Strawbs et al were frequent guests - there was also an awesome Anglo Irish band called The Tinkers if memeory serves me well. I saw Noel down here in devon recently - plus ca change ...