After graduation, Chisholm first worked with
Colin Clark at the
Agricultural Economics Research Institute in the
University of Oxford, from 1954 to 1959. In 1960, Chisholm took up an assistant lectureship at
Bedford College, London, under
Gordon Manley, before moving in 1965 to the
University of Bristol. In Bristol, he was promoted to Reader in 1966, and to Professor of Social and Economic Geography in 1972. In 1976, he moved to Cambridge to take up the
1931 Chair in Geography; a post he held until retirement in April 1996. He was elected a
Fellow of the British Academy in 2002. Chisholm's main work was in areas of human and economic geography, and its applications to government. His writings covered topics including land rent and agricultural economics, regional growth, and the interface between economics and geography. In 1970, Chisholm was awarded the Gill Memorial Award of the
Royal Geographical Society, in recognition of his work on rural settlement, land-use and economic geography. In retirement, Chisholm continued to publish papers, mainly on topics related to the history of the
Cambridgeshire Fens. He died in Cambridge on 9 July 2024, at the age of 93. ==Professional service==