The Labour Leader is to step aside for David Cameron to become Britain's new Prime Minister, according to reports.
As negotiations over forming a new government have been taking place, there is talk that Mr Brown has thrown in the towel.
The Evening Standard is saying 'amid a rebellion in his own side and policy disagreements with Liberal Democrat leader Nick Clegg', the current PM will stand down.
While another report is saying that cases were being packed into vehicles at the rear of Downing Street.
Mr Brown had planned to stay in power until the summer if a deal with the Lib Dems had worked. But it is now being reported that he will resign fully this evening.
The three main political parties have been locked in talks over forming a new government and electoral and political reform.
Labour's hopes of a coalition deal faded this afternoon after talks with the Lib Dems lasted just two hours.