Andrew is a Senior Lecturer in International Nutrition at UCL and works on nutritional problems in populations affected by disasters, emergencies, or HIV/AIDS. He leads the Nutrition in Crisis Research Group, which studies nutritional assessment methods; approaches to enhancing the nutritional quality of food assistance; diagnosis and management of acute malnutrition; and approaches to human resource development and capacity building. Recent projects have been funded by the UNHCR, USAID/OFDA, FAO, the World Food Programme (WFP), and Valid International. He has worked in Bangladesh, Eastern Europe, and many countries in Africa.