murals by Edward Bawden, John Piper (artist) and Martin Froy. A further bronze curtain-wall extension followed in 1973 designed by John Winter, and another in 1982 clad in corrugates Corten-steel, on the eastern side of King Edward's Walk. Sloane School The Sloane School had about 500 boys and was a grammar school on Hortensia Road in Chelsea. It was named after Sir Hans Sloane (1660–1753) after whom Sloane Square was named in 1771. The school library was opened on 25 November 1931 by Sir Hugh Walpole. It was administered by London County Council. From 1929 until 1961, the headmaster was Guy Boas (9 December 1896 – 26 March 1966) who encouraged much-acclaimed productions of Shakespeare. The school magazine was The Cheynean. Sloane School merged in 1970, with the nearby Carlyle School to become Pimlico Comprehensive School, and Pimlico Academy since 2008. The buildings became Chelsea Secondary School. It then became a part of Kensington and Chelsea College in 1990. Notable alumni Cyril Aldred (1914–1991), art historian Dr Anthony Blowers CBE, Commissioner of the Mental Health Act Commission, 1987–95 Geoffrey Bowler, chief general manager of the Sun Alliance & London Insurance Group, 1977–87 Frank Branston (1939–2009), journalist Sir Frederick Burden (1905–1987), Conservative MP for Gillingham, 1950–83 David Caminer, systems analyst; helped design LEO, the world's first business computer Spartacus Chetwynd (b. 1973), Turner Prize nominee artist John Creasey, writer Andrew Crowcroft, psychiatrist Dr William Davies CBE, Director of the Institute of Grassland and Environmental Research, 1949–64; President of the British Grassland Society, 1948–49 and 1960–61 Tony Dyson Gordon East, professor of geography at Birkbeck, University of London, 1947–70; President of the Institute of British Geographers, 1959–60 John Fraser, Labour MP for Norwood, 1966–97 Prof Reg Garton, Professor of Spectroscopy at Imperial College London, 1964–79; discovered the quadratic Zeeman structure in atomic spectra; worked on autoionization of atoms Stephen Greif, actor Steve Hackett, musician Johnny Harris (actor), actor Prof Sir Peter Hirsch, Isaac Wolfson Professor of Metallurgy at the University of Oxford, 1966–92 Prof E R Huehns, Professor of Haematology at University College London, 1975–90 discovered embryonic haemoglobin George Innes, actor Donald James, born Donald Wheal, author Alan Johnson, Labour MP for Kingston upon Hull West and Hessle since 1997 Rhys Lloyd, Baron Lloyd of Kilgerran, Liberal Malcolm Macdonald, footballer John Martin-Dye, swimmer at 1960 and 1964 Olympics Col Donald McMillan CB OBE, chairman of Cable & Wireless, 1967–72 Sir Bernard Miller,