Contributor(s): Professor Ash Amin, Dr Victoria Redclift | Migration is integral to the cultural and economic life of cities. Yet we live in a migration milieu in which migrants are rendered as illegal subjects, and where migration processes are reduced to crises at national border points. This event explores the relation between cities, migrants and migration systems. The event also launches The Sage Handbook of the 21st Century City edited by Suzanne Hall and Ricky Burdett. This edited collection engages with the volatile processes of urbanisation that reveal the turbulent nature of our early twenty-first century. Ash Amin is 1931 Professor of Geography, Head of Department of Geography and Fellow of Christ’s College, University of Cambridge. Victoria Redclift (@VRedclift) is Senior Lecturer in Sociology, University of Surrey. Ricky Burdett is Professor of Urban Studies at LSE and Director of the Urban Age and LSE Cities. LSE Cities (@LSECities) is an international centre at the London School of Economics and Political Science that carries out research, graduate and executive education and outreach activities in London and abroad. Its mission is to study how people and cities interact in a rapidly urbanising world, focussing on how the design of cities impacts on society, culture and the environment. The Department of Sociology at LSE (@LSEsociology) was established in 1904 and remains committed to top quality teaching and leading research and scholarship today.