I am a leading expert of the epidemiology and health burden of sickle-cell disease and other haemoglobinopathies. I assemble contemporary evidence to inform public health policies in order to better prevent and manage these disorders, and ultimately improve the quality of life of patients. My work spans from small-area studies of health inequalities in the UK (e.g. NHS Race & Health Observatory Comparative Research project to influence policies) to global studies (e.g. Lancet Haematology Commission on Sickle Cell Disease to define global strategies and priorities).