Migration is a defining political challenge of our time and a global health priority. And yet internationally there is a lack of epidemiological data on migrant health including estimates of morbidity, mortality and risk factors for disease. In this talk, Rob will describe three studies he currently conducting that aim to generate new evidence that will improve the health of migrants. The first is a recently completed systematic review and meta-analysis of mortality data in international migrants. The second is the Million migrant study – an electronic cohort that will establish national rates of age-specific morbidity and risk factors for disease in migrants to the UK. The third is a migrant eCohort that will be created using a mobile health app to generate data allowing examination of how risk factors for disease in migrants change after arriving in the UK.