Railway porter-turned-billionaire financier George Soros delivered a stark warning last night that the financial world is on the wrong track and that we may be hurtling towards an even bigger boom and bust than in the credit crisis.

The man who ‘broke’ the Bank of England (and who is still able to earn a cool $3.3 bln in a year) said the same strategy of borrowing and spending that had got us out of the Asian crisis could shunt us towards another crisis unless tough lessons are learned.