- Advisor to the Vice President of the Africa Department of the World Bank, and to the Director of the Policy Research Department of the International Monetary Fund.
- Senior Advisor to the Africa Commission.
BBC World Service, ‘Conflict in Africa', November 2004.
University of Oxford Interfaculty Committee for African Studies.
- African Economic Research Consortium.
- European Network of Development Economists.
- With the AERC - Explaining African Economic Growth 1960-2000.