Shirley Bland.

They were all in the Galliards (probably before you knew them) which at one time included Martin Carthy. This kind of morphed ino the 3 City 4 with Lon Rosselson, Martin Carthy, Roy Bailey and Marian McKenzie (who I recall being in the Queens from time to time.

Hedy West lived across the road in Chalcot Square. The Howff opened in the early 70s with Sandy Denny and most of the Albion Band were residents for a while. It disappeared suddently (as Roy's ventures were apt to do), possibly before you arrived.

But you surely went to the Enterprise, opposite Chalk Farm station (as opposed to the now disappeared Primrose Hill station?