Delan is an Academic Clinical Lecturer in public health. He qualified from the University of Manchester and then worked in clinical paediatrics in the UK and New Zealand. After completing a Diploma in Tropical Medicine and Hygiene, he worked with Medecins Sans Frontieres as a paediatrician in Pakistan in 2006 (Kashmir earthquake), in South Sudan (cholera outbreak) in 2007 and Myanmar (post-cyclone Nargis) in 2008. He completed a masters in public health at the London School of Hygiene and Tropical Medicine and a PhD from UCL, funded by the Wellcome Trust. Delan is a member of the Royal College of Paediatrics and Child Health Health Promotion committee and Global Health committee and the Faculty of Public Health Global Violence Prevention group. He is a commissioner and steering group member of the UCL-Lancet Commission on Migration and Health.