At the centre of any new governance for England sits London: big, rich and dominant. It is not a region or a network. It is a world city. Like most cities it has a mayor and spread of boroughs. They run its social services, housing, transport and police. Unlike most cities abroad, it has no control over its health service or schools, and unlike most cities it has no flexibility over its revenue. That is regulated, capped and curbed by central government. At each election, all parties pledge to decentralise but afterwards they shamelessly renege.