Greg Clark is a Londoner and expert on world cities. He works as an advisor to OECD, World Bank, Brookings Institution, ULI and more than 20 major cities around the world (including Auckland, Barcelona, Brisbane, Cape Town, Hong Kong, Johannesburg, Moscow, New York, Oslo, Rio de Janeiro, Sao Paulo, Singapore, Sydney and Toronto) but learned what he knows from working in London as a leader in city agencies during the period covered by this book. He has written four books for the OECD and several published reports for the Brookings Institution, British Council and ULI.