A. Roger Waters and Nick Mason met while studying architecture at the London Polytechnic at Regent Street. They first played music together in a group formed by Keith Noble and Clive Metcalfe with Noble’s sister Sheilagh. Richard Wright, a fellow architecture student, joined later that year, and the group became a sextet, Sigma 6. Waters played lead guitar, Mason drums, and Wright rhythm guitar (since there was rarely an available keyboard). The band performed at private functions and rehearsed in a tearoom in the basement of the Regent Street Polytechnic. They performed songs by the Searchers and material written by their manager and songwriter, fellow student Ken Chapman.
In September 1963, Waters and Mason moved into a flat at 39 Stanhope Gardens near Crouch End in London, owned by Mike Leonard, a part-time tutor at the nearby Hornsey College of Art and the Regent Street Polytechnic. Mason moved out after the 1964 academic year, and guitarist Bob Klose moved in during September 1964, prompting Waters’ switch to bass. Sigma 6 went through several names, including the Meggadeaths, the Abdabs and the Screaming Abdabs, Leonard’s Lodgers, and the Spectrum Five, before settling on the Tea Set.
In 1964, as Metcalfe and Noble left to form their own band, guitarist Syd Barrett joined Klose and Waters at Stanhope Gardens.
The group first referred to themselves as the Pink Floyd Sound in late 1965. Barrett created the name on the spur of the moment when he discovered that another band, also called the Tea Set, were to perform at one of their gigs. The name is derived from the given names of two blues musicians whose Piedmont blues records Barrett had in his collection, Pink Anderson and Floyd Council.
Picture is of Leonard’s Lodgers