Peter has been the Director of Sigma Research since 1997, and has worked as a research and evaluation specialist since 1989. He manages Sigma Research’s research and development programmes at the London School of Hygiene & Tropical Medicine, and is Head of the Sexual & Reproductive Health Group in the department of Public Health, Environments and Society (PHES/ PHP). In addition to sexual and reproductive health Peter is interested in development and evaluation of community and structural interventions that address health inequalities especially in relation to mental health, drug use and youth violence. He has extensive experience of needs assessment, process and programme evaluation and has written more than 100 journal articles, a book, and over 100 research reports, monographs and book chapters.