25 May 2011
Last updated at 21:04
Following Tuesday night's Buckingham Palace banquet, the second day of President Obama's state visit will focus more on political issues. The day starts with talks at Downing Street with Prime Minister David Cameron.
As Mr Cameron and the US President sat down in the White Room at Downing Street, they were surrounded by photographers who started snapping away. The president joked: "All right guys, one of those must have worked".
Foreign Secretary William Hague, US counterpart Hillary Clinton and Deputy Prime Minister Nick Clegg are also attending the meeting, where the state of the global economy, counter-terrorism and the conflict in Afghanistan are also likely to feature.
Ahead of the talks, Mr Hague said there were "no fundamental differences" between the two countries on key foreign policy issues and President Obama's visit would bring "intensified co-operation" on different levels.
The prime minister and the president served up food at a barbecue for military families from the US and Britain, in the Downing Street garden.
While the men looked after the meat, their wives - Michelle Obama and Samantha Cameron - were left in charge of the salads. Unlike at many barbecues in Britain, the sun was shining.
Later, at a joint press conference held at Lancaster House, President Obama said the two men "saw eye-to-eye" on a range of issues.
The President told British politicians that, despite the rise of new global superpowers, the time for US and European leadership "is now". In a speech in Parliament, he said the US and its allies in Europe would remain "indispensable" this century.
Barack Obama was the first US president to address MPs and peers in Westminster Hall, after which he stopped to shake hands with the politicians and other prominent figures who had lined the building to hear his speech.
The Obamas - seen waiting for the Queen and Prince Philip - later hosted a banquet for the royal couple and a select group of other guests at the US ambassador's residence in London.
The Obamas welcomed the royals to Winfield House, in London, as the evening got under way