I am an epidemiologist with a research focus on child and adolescent health and development in the UK and abroad. I have conducted evaluations to assess impacts of UKRI, Wellcome Trust, Gates Foundation, and World Bank funded public health programmes using observational or interventional methods to contribute to policy decisions for programme scale-up in England, Ghana, Mozambique, Uganda, The Gambia, India, Pakistan, and Burkina Faso. I am co-Deputy Director for the LSHTM Centre for Evaluation, I organise an MSc module in Study Design, and I am the internal moderator for the MSc module Practical Epidemiology, both in the LSHTM Epidemiology MSc programme. I am a member of the UK Government Evaluation and Trial Advice Panel, and I sit on the steering committee for the John Snow Society and Grants and Evaluation Committee for the Youth Endowment Fund. I have a PhD from the University of Warwick in Biological Sciences (Epidemiology) and an MSc in Medical Parasitology from the LSHTM.