Diarmuid O’Donovan is Professor of Global Health at Queen’s University Belfast and honorary consultant in public health at the Public Health Agency in Northern Ireland. In this podcast, he carries us through his journey from a 24-hour fast for Concern in secondary school, to studying medicine, to working in Zambia, Sierra Leone and Nigeria. His work has included clinical, research, education and policy aspects of HIV, maternal and child health, and research capacity building. He talks about equality, equity and justice and what the growing language surrounding the decolonisation of global health means and how it will be achieved.