Practised in Durban from 1938 until his retirement from architecture in 1968, Simpson was born in Durban and articled to A Stanley FROST, LRIBA from December 1927 until 1930, studying part-time at the Technical College and registering as an external student at the University of the Witwatersrand. He worked in GE LE SUEUR's office between 1931 and 1934 and was overseas from 1934 to 1938, having won the Emma Smith Travelling Scholarship in June 1934. He went overseas for two years training and spent six months in Italy in 1935, attending Florence University. He later spent two years at the Architectural Association in London in 1935-37. In 1938 he returned to Durban to practice on his own account but in 1939 his practice was interrupted by war. From 1940 until 1944 he was with the Admiralty; after the war he returned to practice, in 1944 rejoining Geoffrey Le Sueur & Partners in Durban where he remained until 1968 working as design partner. Among his buildings, executed as G Le Sueur, in Durban are the Dunlop SA Offices and factory additions in Sydney Rd, Yarningdale and Barcelona on the Marine Parade, the Customs House, Methodist Church in Smith St, University of Natal Library in Pietermaritzburg, Chemistry block at the University of Natal in Durban, the Eagle Building, Smith St and Technical College residences in Manning Rd, Durban. In 1968, his completed decorative mural for the Eagle Life Building in Durban led him to take up painting in a more committed way and, on the encouragement of Everard Read, held several exhibitions. He was responsible for a number of documentary paintings of famous Durban buildings, some of which were reproduced on the Adams's Bookshop calendars.
President NPIA 1955-7; President-in-Chief ISAA 1958-9; His name can also be found spelt J Churchill-Simpson but this is incorrect. ISAA 1938; ARIBA 1939. (ISAA mem list; ARIBA nom papers 1939; SAAR Jun 1934; SAAR Jul 1956: 22; SAAR Feb 1965; Simpson pers com 1989)
All truncated references not fully cited in 'References' are those of Joanna Walker's original text and cited in full in the 'Bibliography' entry of the Lexicon.