Effective period / Period of releases: 1960 - 1970

Members: Alan Holmes (2), Gordon Bland, Ian Richards, Derek M. Garside, Haydn Richard Harris, Colin Waggott, Peter Gill (5), Geoffrey Pinder, Theodore Dowers, Robert C. Richards, Brian Cronshaw, Harold W. Lang, Andrew J. Spencer, Anthony Ryan (6), Jack Philips, Bernhard Logan, Stuart W. Holden, Joseph J. Hughes, Brian E. Evans, Wilfred Hudson, Harry Cooke (2), Thomas G. White, Lyndhurst Williams, Joe Poole (3)