Cloisters was the less famous neighbour of Rafters, Rotters et al on Oxford Street. The club was cheaper to get into with cheaper drinks, so probably attracted a certain type of punter in the '70s (think modern day Peter Street). It was a sticky-carpet cellar club and bar, with a bizarre slightly medieval theme and it had life-size suits of armour around the dance floor. There is even a documented haunting recorded for Cloisters - in the '70s the deceased owner, Bill Benny, was reported to have turned up on CCTV a few years after his death ! Cloisters closed in the late '70s, and from what I can gather was on the same side of Oxford Street as Rotters, towards St Peter's Square.