In his April budget Alistair Darling announced public sector borrowing this year of £175bn. He also needed to roll over £45bn worth of old debt making a total borrowing of £220bn.
We have just completed the fifth month of the financial year and total borrowings in the year to-date are: £94,193,328,600.
Annualise that and you get £226bn. So we're only $6bn over-budget; less than a billion a month.