The Jenner Institute comprises the research activities of 28 Jenner Investigators located at different sites of the University of Oxford, The Pirbright Institute and the Animal Health and Veterinary Laboratories Agency. The administrative headquarters and main laboratories for human vaccine development are located at the Jenner Institute Laboratories, Old Road Campus Research Building, in Headington, Oxford. This model results in an Institute dispersed across multiple sites, providing Investigators with access to a wide range of expertise and specialist Core Facilities. Each Jenner Investigator leads a Vaccine Programme employing post-docs, research assistants and doctoral students to undertake research in one or several disease areas. Programmes in the later stages of vaccine development also include Clinical Research Fellows, who are the trial physicians responsible for the planning, implementation and analysis of clinical vaccine trials in the UK and in overseas field sites.