Director of Africa Research Institute (ARI) since 2011. ARI is an independent, non-partisan and privately funded think-tank based in London. Formerly Visiting Fellow, Magdalene College, Cambridge University. Recent research projects: demography of Africa; urbanisation in sub-Saharan Africa; debt management in Africa; informal economies; structural transformation. Author of several books on African topics, including 'Tip & Run: The Untold Tragedy of the Great War in Africa'.