MPs vote by 286 to 344 to reject the government’s withdrawal agreement - on the day the UK was due to leave the EU
The Commons has been debating a motion on the terms of the UK's exit
The political declaration, which sets out the future relationship, was not considered
The vote - the third time the government had been defeated over its deal - throws the UK’s plans into more confusion
Theresa May says the result will have "grave" implications and the "legal default" was that the UK would leave the EU on 12 April
Labour leader Jeremy Corbyn urges the PM to call an election
Thousands of Leave supporters gather outside Parliament to protest against Brexit delay
House of Commons
Parliament
Labour's Ian Murray says he will not support the withdrawal agreement.
The MP for Edinburgh South said that from November last year, "nothing has changed".
Referring to a comment made by Justice Secretary David Gauke, he added: "There are no sunny uplands in this process.
"Today we should all say loud and clear that we are slaying the unicorns once and for all."
BBC News Channel
Joanna Cherry, Scottish National Party MP for Edinburgh South West, tells the BBC that politicians voting on the Brexit deal on the day the UK had been due to leave the EU face a hostile crowd outside Parliament.
"There's people behind us shouting, 'We have ways of making you vote'. Clearly it's quite an intimidating atmosphere for some MPs today," she says.
But she adds that the SNP will still vote against the deal, accusing the prime minister of failing to build a consensus.
"We did very well on the indicative votes on Monday, we got a lot more people to vote for a second referendum than anyone thought we would," she says. "That's why the Tories are so desperate to get this through today."
BBC political correspondent tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
House of Commons
Parliament
Sammy Wilson of the DUP says his party's position "has not changed" and they will continue to oppose the withdrawal agreement.
He tells the Commons: "For us who have gone through a terrorist campaign of 40 years to try and remove us from the United Kingdom, we are not prepared to see our constitutional position being altered by Brussels."
Mr Wilson says there is a "certain irony" that the motion has been put forward on the day the UK had been due to leave the EU.
The Northern Irish MP adds: "We have sought over the last number of weeks to work with the government to try and find a way of either getting legal assurances or legislative changes to allow us to move this on because of course we want to see a deal.
"We want out of the European Union and we want to have a clear path as to how we do that.
"But it has not been possible because the withdrawal agreement itself so ties the hands of this government that it is impossible to find a way of securing the assurances which are required to first of all make sure the United Kingdom is not broken up and secondly that we do have a clear way that the Brexit many of us expected to see delivered will be delivered."
BBC Newsnight political editor tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
BBC News Channel
Heidi Allen, named as interim leader of the Change UK party proposed by The Independent Group of MPs, says “tens of thousands” of people have signed up to support them.
"This is David and Goliath stuff," she says. "We are literally starting and building a party together."
There was no "fighting" or "power games" over choosing her as interim leader, Ms Allen says.
A permanent leader could be chosen at the proposed party's first conference later in the year but she says that it is a "nice combination" to have a leader from the Conservative Party and a spokesman in Chuka Umunna from Labour.
She says the People's Vote march and the petition for revoking Article 50 reaching nearly six million signatures was a "weather vane moment" for a shift in opinion on Brexit.
"The country is crying out for someone to lead and say, you know what, we could just stay," she says.
"Everybody is tired, everybody is worried. Brexit is the catalyst that has brought us together but this is about saying politics is broken."
BBC political editor tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
House of Commons
Parliament
The Conservative MP and former attorney general Dominic Grieve will also vote against the withdrawal agreement.
The staunch Remainer says the point all sides can agree on is the "utterly wearying quality" of continually debating Brexit.
He adds: "When we find ourselves being presented with opportunity that might bring that debate to a conclusion, it is always a temptation to look at it and think it could be a way out.
"For many of us in this House the sword of Damocles of a no-deal Brexit [is hanging over us] and that is a matter of huge anxiety as I believe it would be a catastrophe for our country."
He continues: "The issue we have to consider today is whether the offer goes anyway to resolving this problem.
"In my view it cannot and does not."
Image source, Getty ImagesWe're more than 1,000 days on from when the UK voted to leave the European Union.
So, as MPs prepare for a third vote on the prime minister's Brexit deal, here are some things that don't - or didn't - last that long:
Read more from Newsbeat's Chris Smith here
Two groups - one from the highest leave voting area, Boston, the other from the highest remain voting area, Lambeth - have been visiting each other's home towns to try to build bridges and understand different points of view.
BBC Breakfast went to see what the participants had gained from this experience.
More in Common - how voters are bridging the Brexit divide
The European Commission says passing the withdrawal agreement would be enough for the UK to be able to leave the EU with a deal - without passing the political declaration.
MPs are being asked to approve only part of the PM's Brexit deal, the withdrawal agreement, in Parliament later.
A European Commission spokesman said: "The withdrawal agreement negotiated between both parties is indeed both necessary and sufficient to ensure the orderly withdrawal of the UK."
He noted that it would have to be ratified by Westminster and the European Parliament as well as being approved by MPs in Friday's vote.
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
BBC News Channel
Tory MP Damian Collins says he will vote for the withdrawal agreement later - despite voting against it on the two previous occasions.
“I don’t think it’s a good deal. I think there are a lot of risks now for the next phase of negotiations," he tells the BBC.
But he says the "realistic alternatives" to the deal, including permanent membership of the customs union, a long delay to Brexit or a second referendum, "all pose more inherent risks than the deal itself".
House of Commons
Parliament
Labour's Hilary Benn says he will not vote for the motion as it is a "transparent attempt by the government to avoid another meaningful vote".
The chair of the Brexit Select Committe adds: "We cannot separate the withdrawal agreement from the political declaration as both parts are essential.
"It is like saying we are selling our house without any idea where we are going to live after."
He says the consequences of passing the motion today is that if by 22 May, the government has not agreed the deal in Parliament, the EU is "almost certain to refuse" another extension on the grounds the UK didn't take part in European elections.
"This motion [could] mean the UK leaving without a deal," he adds.
"The only other way forward would be revoking Article 50 [stopping Brexit altogether] but the prime minister has said repeatedly she will not [do that]."
"In effect, this is a no-deal motion and for that reason alone it deserves to be defeated."
House of Commons
Parliament
Sir John Redwood, who backs Brexit but not Theresa May's deal, says that he knows MPs, particularly on the Tory benches, "are finding this a very difficult vote and a very difficult decision to make".
But the Conservative backbencher will not be backing the government today.
He says: "I asked myself what have I and my party promised?
"There it is very clear that I and the national manifesto in 2017... said that we would see Brexit through, that it would take two years, that no deal deal was better than a bad deal.
"And the manifesto wisely said that the government would negotiate both parts together, the withdrawal [agreement] in parallel with the future trading relationship
"Unfortunately the government changed their mind about that and let the public down."
Labour's Lisa Nandy has told the BBC News Channel she doesn't believe MPs will back the withdrawal agreement.
She says: "The prime minister seems to have done some kind of deal with her own side that she will go if the withdrawal agreement is passed.
"Obviously that raises the prospect of somebody, a hard Brexiteer, taking over not just the Tory party but the country, and being in charge in those next stages of negotiations.
"It is why many Labour MPs who were considering voting for the deal in the interests of the country now believe it would not be in the interests of the country to do so...
"I think the prime minister has made a big mistake this week, because she may have provided some reassurance to colleagues on her side but it's had precisely the opposite effect on ours."
BBC chief political correspondent tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
BBC Scotland's chief political correspondent tweets...
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
House of Commons
Parliament
The Labour MP for Hackney South and Shoreditch, Meg Hillier, stands up to condemn the vote.
She says: "What a shambles it has been and today we see desperate measures by a desperate government.
"The biggest issue of my lifetime is going to be the centre of a Tory leadership contest.
"It stopped a long time ago being about the referendum [or] being about the people."
Ms Hillier goes on to criticise the splitting of the withdrawal agreement.
"We are being asked to vote for this withdrawal agreement with no knowledge of what will be in political declaration," she says.
"It is a leap in the dark and I am not prepared to take it and put my constituents in that position."
Victoria Derbyshire
Labour MP Rushanara Ali says she won't vote for the withdrawal agreement because it offers "no certainty" about the UK's future relationship with the EU.
She tells the BBC's Victoria Derbyshire programme she is not prepared to "walk into the dark and damage the future of my constituents".
“The government’s own analysis shows that the withdrawal agreement is going to damage people’s jobs, damage the economy," she says.
“The government is asking us to vote for a deal that will make the country worse off.”
George Osborne tweets:
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
