Olivia is a Research Associate in the MRC Epidemiology Unit, University of Cambridge. She works across the Behavioural Epidemiology and Interventions in Young People and Population Health Interventions programmes. During her PhD, Olivia focused on the role of socioeconomic position in young people's physical activity behaviour. In her role as Research Associate, Olivia is leading the data collection and analysis of a qualitative evaluation on the impact of London's Ultra Low Emission Zone on the school journey.