Major reform of the international economic system is needed in order to solve the current crisis, according to a new global poll of over 29,000 people carried out for BBC World Service. As G20 leaders prepare to meet in London this week, 70 per cent of those across the 24 countries polled by GlobeScan think 'major changes' are required to the way the global economy is run. Only 4 per cent think no significant changes are needed.