Dr Paul Norman is a population and health geographer. His research interests include: Harmonisation of small area level socio-demographic, morbidity and mortality data to enable time-series analysis of demographic and health change. Development of small area population estimation and projection methods that incorporate multiple data sources about population subgroups and demographic processes. Using area typologies to understand migration patterns and resulting health outcomes. Using individual level microdata to understand aggregate differences in population stratification and characteristics over time.