I currently lead the Community Health Systems group in LSTM and work as a consultant physician at the Tropical Infectious Disease Unit, spanning LSTM and the Royal Liverpool University Hospital. Trained in infectious diseases, public health and education, I have a rare combination of skills that have enabled me to design and lead high quality implementation research, bridge disciplines and facilitate networks. My research in the complementary areas of HIV testing and counselling and community health equity has focused on evaluating and spreading effective approaches to improving the quality and delivery of services. My publications on new diagnostic tests, cost effectiveness, demand creation, community outreach, and appropriate models of service provision have informed WHO policy and Ministry of Health guidelines on HIV testing and on community health in sub-Saharan Africa. In 2015 I was included in the Graduate Institute list of 300 Women Leaders in Global Health.