- Founding Director, Poverty Research Unit, University of Sussex (from 1994 to 1997)
- Quondam Fellow, All Souls College (from 1984 to 2023)
- Two-Year Fellow, All Souls College (from 1982 to 1984)
- Fellow, Institute of Development Studies and Professorial Fellow, University of Sussex (from 1970 to 1994)
- Prize Fellow, All Souls College (from 1961 to 1968)
- Undergraduate, Balliol College, Oxford (from 1957 to 1960)
- Economics, especially in agricultural research
- Land reform
- Poverty and inequality
- Nutrition
- Economic demography in developing countries, including Bangladesh, Botswana, India, Sierra Leone, Sri Lanka and South Africa
