The London School of Hygiene & Tropical Medicine is one of Europe’s leading schools of Public Health and a leading postgraduate institution worldwide for research and postgraduate education in global health. Part of the University of London, the London School is the largest institution of its kind in Europe with a remarkable depth and breadth of expertise encompassing many disciplines. Being part of the Faculty of Epidemiology and Population Health (EPH), the Department of Population Health aims to contribute to evidence-based public health through conducting research that supports the development and evaluation of public health interventions in the UK and developing countries. It has a focus on interventions that reduce the excess burden of ill health associated with poverty and deprivation. Our group is experienced in conducting RCTs of treatment interventions, particularly of psychological interventions, with four of these published by Lancet over recent years. One of our group’s main strengths is the wide and large clinical network from where we recruit patients for our clinical trials. The LSHTM hosts a Clinical Trial Unit approved and funded by the Medical Research Council.