Professor David Gray came to the University of Edinburgh in 1999, after periods working in London (Imperial College) and Switzerland (Basel Institute for Immunology), following a PhD in Birmingham (1986). He has a longstanding interest in the interactions between B and T lymphocytes that lead to adaptive immunity. His research focuses on how this cellular interaction programmes immune memory in the helper T cell compartment, a process that underlies protective immunity and successful vaccination. David is a past-President of the British Society for Immunology, and now a lifetime honorary member. He currently leads the School of Biological Sciences in the University of Edinburgh.