Tony Blair, 54, resigned from his role of Prime Minister to become a representative of a new group of diplomats called the Quartet, made up of the US, Russia, the UN and the EU.
Tony Blair received a standing ovation from Opposition and government MPs for being the biggest election winner in modern British history, and before he left he said: "I wish everyone - friend or foe – well."
Being Prime Minsiter for just over 10 years made him only the second British political leader of the past century to stay in office for a decade. Margaret Thatcher was Prime Minister longer than Tony Blair but her party ousted her after 11 years and seven months.
And Gordon Brown took control of the Government after the longest anyone had been the chancellor since the 1820s.
Gordon Brown then went to Buckingham Palace for an hour-long meeting with the Queen, which was much longer than expected. It has been speculated that Gordon Brown was explaining his plans for a cabinet reshuffle, constitutional reforms and other changes.
