David Cameron reaffirms EU referendum vow
11 May 2014 Last updated at 11:05 BST
David Cameron has reaffirmed his pledge that he will not continue as prime minister following the 2015 general election unless he can guarantee an in-out referendum on whether the UK should stay "within a reformed European Union" by 2017.
Speaking to The Andrew Marr Show, Mr Cameron said: "You cannot hold people in an organisation against their will".
He added: "It's right to have this renegotiation, to have this referendum, and to let the people have their say."