Can London cope with its future growth? Is it really Europe's only global city? What is the impact of massive regeneration projects? These are some of the questions that civic leaders, city-builders, architects and academics from around the world asked when they met in London in 2005. The Mayors of Washington DC, Sao Paulo, Amsterdam, Barcelona and Edinburgh joined world-renowned urbanists Richard Rogers, Rem Koolhaas and Saskia Sassen to debate the future of a city facing momentous growth.