Leaked budget details show beer duty cut and fuel tax rise scrapped It is believed that the Treasury gave the Evening Standard advance details of the Budget to allow the paper to produce a paper that would be published after the speech. But an image of the paper's front page appeared on the internet shortly after noon, before Mr Osborne had even started speaking to MPs. That meant that internet users - and potentially financial markets - were aware of the Budget details before Parliament. The accidental pre-release of potentially market-sensitive information will severely embarrass George Osborne, who is under political pressure over his handling of the economy. Last year's "omnishambles" budget of controversial measures severely damaged Mr Osborne's repuation. The apparent leaking of this year's package threatens to repeat that harm. Previous chancellors have had to resign over the leaking of Budget details. In 1947, Hugh Dalton, a Labour chancellor, resigned after accidentally divulging details of his Budget to colleagues. Sarah Sands, the Editor of the Evening Standard, said a member of staff had been suspended over the incident. She said she was "devastated" that the embargo had been breached. "An investigation is immediately underway into how this front page was made public and the individual who Tweeted the page has been suspended while this takes place," she said. We have immediately reviewed our procedures. We are devastated that an embargo was breached and offer our heartfelt apologies. The leak was not mentioned before Mr Osborne addressed the House, although Ed Miliband tackled him on it immediately after the Budget. "He almost need not have bothered coming to the House because the wholde Budget, including the market sensitive fiscal forecasts, were in the Standard before he came," Mr Miliband said. The Labour leader called for an investigation into the incident. Details revealed by the Evening Standard include: Duty on a pint of beer will be cut by 1 pence A 3p rise in fuel duty due in September will be scrapped. The UK economy will rise by only 0.6 pc in 2013 Borrowing will be £61 billion higher than planned over six years. The national debt will not start to fall until 2017/18. Whitehall departments will have to cut by £3 billion, more than thought. Pay freezes for public sector workers will be extended