Sadaf Sultan Khan is a research fellow in the Cities Cluster at IDS. She has trained and practiced as an architect and completed a PhD in urban morphology and contested urbanism from UCL’s Bartlett School of Architecture. The thematic focus of her work is the socio-spatial investigation of the migrant experience, its impacts on cities and, the implications of rapid urbanisation on processes of growth and development particularly in informal urban settlements. Geographical experience includes South Asia, East Africa, Turkey and Europe. She uses GIS mapping tools and spatial analysis to explore urban processes including displacement, informality and infrastructure provision.