Britain's budget deficit could hit the stratospheric levels seen in the wake of the Lehman Brothers collapse if the eurozone crisis deepens and UK growth is wiped out, economists have warned.
On Thursday, the public sector borrowing figures for November are expected to show borrowing of £20 billion ($40.8 billion) over the month.
This would leave the Treasury on course to bring the deficit for 2011-12 down to the £127 billion forecast by the Office for Budget Responsibility (OBR).
However, analysts also warn that if next year's growth undershoots the 0.7 per cent predicted by the OBR, the borrowing figures will rapidly deteriorate.
"If growth is zero for 2012 you could see the deficit back at £140 billion to £145 billion," said Investec economist Philip Shaw.