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Boris Johnson to campaign to leave EU Boris Johnson to campaign to leave the EU
(35 minutes later)
Conservative Mayor of London Boris Johnson is to campaign for Britain to leave the EU, the BBC understands.Conservative Mayor of London Boris Johnson is to campaign for Britain to leave the EU, the BBC understands.
The MP's decision comes as ministers began campaigning over the UK's EU membership, after PM David Cameron called a referendum for 23 June.The MP's decision comes as ministers began campaigning over the UK's EU membership, after PM David Cameron called a referendum for 23 June.
He is expected to confirm his decision on Sunday evening and give his reasons for it in his column for the Telegraph newspaper. Mr Johnson is expected to confirm his decision in a statement later and set out his reasons in a Telegraph column.
Mr Cameron told the BBC leaving the EU would be "a leap in the dark". Mr Cameron - who is recommending the UK remains in the EU - told the BBC leaving would be "a leap in the dark".
Live: Ministers clash over EU referendum campaign BBC political editor Laura Kuenssberg said Mr Johnson's decision would be seen as a huge boost to the Out campaign and a major blow to the prime minister, who had hoped to persuade friends and rivals to back the campaign to remain.
The UK's EU vote: All you need to know Mr Johnson is expected to make a statement at about 17:00 GMT, BBC chief political correspondent Vicki Young said.
BBC Political Editor Laura Kuenssberg said Mr Johnson's decision will be seen as a huge boost to the Out campaign and a major blow to the prime minister who had hoped to persuade friends and rivals to back the campaign to remain. It comes after days of speculation about which side he would join for the in/out referendum.
Mr Johnson, who was elected to Parliament in May 2015 as the MP for Uxbridge and Ruislip South, joins six other ministers who attend cabinet in backing the campaign to leave.Mr Johnson, who was elected to Parliament in May 2015 as the MP for Uxbridge and Ruislip South, joins six other ministers who attend cabinet in backing the campaign to leave.
Zac Goldsmith, who is hoping to become Mr Johnson's successor as London mayor in May, has also said he will vote to leave.Zac Goldsmith, who is hoping to become Mr Johnson's successor as London mayor in May, has also said he will vote to leave.
'Safer and stronger'
Earlier, on the BBC's Andrew Marr Show, the prime minister appealed to Mr Johnson not to side with the Leave camp.
He said if Mr Johnson cared about "getting things done" in the world, being a member of the EU was important.
And he said "linking arms" with Nigel Farage and George Galloway - members of the Grassroots Out movement which, along with Vote Leave, is vying to become the official Leave campaign - was "taking a leap into the dark" and "the wrong step for our country".
Mr Cameron, who renegotiated the terms of Britain's membership of the EU, argues that the UK is "better, safer and stronger" being in the EU.
Leaving, he says, might give the "illusion of sovereignty" but would actually weaken the UK's power and influence.
What are your views on the EU referendum? Are you from the UK or one of the other EU member states? Share your reaction. Email haveyoursay@bbc.co.uk.What are your views on the EU referendum? Are you from the UK or one of the other EU member states? Share your reaction. Email haveyoursay@bbc.co.uk.
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