A trader looks at her screens before Britain's Chancellor of the Exchequer Alistair Darling's pre-budget speech, on a trading floor in London December 9, 2009.  Darling set the stage for the coming election, announcing on Wednesday a one-off super tax on bank bonuses and other higher taxes on the rich.    REUTERS/Andrew Winning (BRITAIN - Tags: BUSINESS POLITICS EMPLOYMENT)  By Sumeet Desai

LONDON, Dec 9 (Reuters) – Britain’s Labour government slapped a one-off levy on bank bonuses on Wednesday and said it would hike income tax for all but the poorest in 2011, delaying action to tackle a record deficit until after an election it is expected to lose.