U.S. President Barack Obama has said he "respects" Britain's decision to leave the European Union.
In a statement issued by the White House, he said: "The special relationship between the United States and the United Kingdom is enduring, and the United Kingdom’s membership in NATO remains a vital cornerstone of U.S. foreign, security, and economic policy.
"So too is our relationship with the European Union, which has done so much to promote stability, stimulate economic growth, and foster the spread of democratic values and ideals across the continent and beyond.
"The United Kingdom and the European Union will remain indispensable partners of the United States even as they begin negotiating their ongoing relationship to ensure continued stability, security, and prosperity for Europe, Great Britain and Northern Ireland, and the world", he added.
The chairwoman of the Commons Health Select Committee has said she will question the Leave campaign on one of their referendum pledges.
Dr Sarah Wollaston MP will be asking "when and how" the £350 million - which Leave claimed to be sent to the EU weekly - will be spent on the NHS.
Nigel Farage today responded to claims that he had apologised over the controversial Breaking Point poster.
The Ukip leader responded to questions after his final leve speech of the EU referendum campiagn, saying "I cannot apologise for the truth".
He added that the picture showed "what is wrong with the European Union".
- ITV News report by Martin Geissler
The city of Lancaster is set to be Britain's bellwether town for the EU referendum, which means that the way the city votes should indicate the way that the whole country will vote.
Young voters in the city felt unsure about whether they had enough facts to make an informed decision, whereas older people were more confident in the way they were going to vote.
Lancaster's results will be expected at around 3.30am on Friday morning.
David Cameron has criticised Vote Leave leaflets on BBC's Question Time EU Referendum special, saying that the public should not vote to leave based on "three things that are completely untrue".
David Cameron explained to applause that he believes the question of Turkey joining the EU is "the biggest red herring in this whole referendum debate".
"I can't find a single expert anywhere in the country or in Europe that thinks Turkey is going to join the EU in the next few decades."
"To join, you've got to negotiate 35 chapters. They've done one."
He went on to explain that leaflets from Leave have claimed several things that he says are not true.
"Look, if we want to vote to leave this organisation, let's vote to leave it," he said. "But let's not do it on the basis of three things that are completely untrue."
"If we leave this organisation forever, we don't take back control," David Cameron told a studio audience at BBC's special Question Time programme about the EU referendum.
Britain will be "outside the room" while French, Germans and Italians are working to figure out how to fight terrorism and how to make things better for Europeans, he argued.
"They'll be deciding the rules and regulations for our continent," he said, "and we should be there fighting.
"Britain doesn't quit, we fight, and that's how we win."