Britain's Prime Minister Gordon Brown (L) greets Indonesia's President Susilo Bambang Yudhoyono upon his arrival at the G20 summit at the ExCel centre, in east London April 2, 2009. World leaders are set to declare an end to unfettered capitalism at a G20 summit on Thursday after France and Germany demanded they act fast on promises to prevent a repeat of the worst economic crisis since the 1930s.. REUTERS/Stefan Wermuth (BRITAIN BUSINESS POLITICS)