Jonathan V. Beaverstock is Professor of International Management at the University of Bristol, United Kingdom. His research investigates the strategy of globalizing professional services firms, talent management and highly-skilled mobilities, and the competitiveness of financial centres. He publishes widely in business/management, economic geography, and migration and urban studies. James R. Faulconbridge is Professor of Transnational at Lancaster University Management School, United Kingdom. His research focuses on knowledge, learning and innovation; globalization and professional services; and, corporate mobility. He has published in leading journals, including: Journal of Economic Geography; Organization Studies, and Work, Employment and Society. Sarah J.E. Hall is Associate Professor and Reader of Economic Geography at the University of Nottingham, United Kingdom. Her research examines the circuits of knowledge, expertise and elites that shape the contemporary global service economy. Sarah has published widely in economic geography and sociology.