2001, Director and Chairman, Peter Medawar Building for Pathogen Research, an interdisciplinary centre aimed at understanding interaction between human infectious diseases and their hosts. Associate Head, Research, Medical Sciences Division, Oxford. Professor of Medicine, University of Oxford. Trial Immunologist for SPARTAC, a controlled trial aimed at evaluating efficacy of anti-retroviral drugs for acute HIV infection. Researcher into other human infections including hepatitis C virus, Nuffield Department of Clinical Medicine. Research interests: falciparum malaria, evasion of immune response by human AIDS virus; first to document mechanisms through which HIV-1 evades human immunity; what forces drive survival of HIV mutants that evade immunity, how HIV evolves and whether it is adapting to human populations.