Image source, Getty Images

The Green Party's only MP, Caroline Lucas, says this is "an incredibly dangerous moment for our country".

She adds: "It looks like a huge con on the British people because, if the vote succeeds, it will take us into a short transition period - giving people the completely false impression that there will be no impact on living standards, or workers' rights and consumer protections outside the EU.

"Boris Johnson will doubtless use this opportunity to try to win an election and put in power a hard-right government which will then run down the clock to the end of the transition period so we end up leaving with no deal."

The transition period - due to run to the end of 2020 - is intended to allow time for the UK and EU to agree their future relationship.

During this time, the UK would have no say in the making of new EU laws during the transition, but would have to follow all EU rules, including freedom of movement.

Image source, AFP/JESSICA TAYLOR/UK PARLIAMENT

What time is Parliament sitting tomorrow?

What will happen if the PM's deal fails to get support?

What about if the Letwin amendment gets through?

... and come to think of it, what is the Letwin amendment?

Have no fear - the answers are here.

Image source, Getty Images

Speaking at a press conference in Brussels, the French president said: "I'm not trying to read the future, but I do not think we shall grant any further delay [to the Brexit deadline].

"I believe it is now time to put an end to these negotiations, work on the future relationship and put an end to what is currently ongoing."

He added: "Like I said, there shall be no delay unless there are some major changes."

Taoiseach Leo Varadkar also throws doubt on suggestions the EU would be happy to offer another extension if Boris Johnson's deal is not accepted by MPs, according to the London editor of the Irish Times.

It's all part of the plan to give the new deal the best possible chance of getting through, thinks the Sunday Times' Tim Shipman.

Chris Morris
BBC Reality Check

French President Emmanuel Macron says he hopes the 31 October deadline holds.

He went on to say I can't predict the future, I don't think any other delay should be given.

What he didn't say is that he would veto an extension to Brexit.

What we have to bear in mind that, is that in the run-up to the previous deadline of 29 March, President Macron was making similar points - 'We shouldn't extend' - but in the end he did.

I think, after huffing and puffing, the answer from Brussels to an extension request would probably be yes.

BuzzFeed

BuzzFeed News reports that Labour MP Sarah Champion has told a constituent she will vote for Boris Johnson's new Brexit deal.

Earlier, we reported how there were as many as 10 Labour rebels prepared to go against the party by voting for Mr Johnson's agreement.

Image source, PA Media

Labour MP Ronnie Campbell, who is standing down at the next election, said "at the moment" he would vote to support the deal.

But he told the BBC: "I am getting a lot of pressure from the head lads of the Labour Party... to abstain."

Mr Campbell said party leader Jeremy Corbyn, shadow chancellor John McDonnell and party chairman Ian Lavery had been in contact since his declaration of support for the Withdrawal Agreement on Thursday.

The Blyth MP added as many as 12 Labour MPs could cross the floor to vote for Mr Johnson's deal on Saturday.

French President Emmanuel Macron says he wants to keep to the Brexit deadline of 31 October.

Image source, AFP/ Getty Images

Following a meeting with the PM in Downing Street, Bill Cash - an ERG member - says "I've had very constructive discussions, these are massive issues… nothing is concluded yet.

"But we’re drilling down into really good, important matters of national importance and trying to get the answer that everyone will be able to work with."

The World at One
BBC Radio 4

Mark Mardell makes a jibe at Mr Rees-Mogg for that infamous slouch on the seats of the Commons a few weeks ago.

"It did annoy people," the World at One presenter says.

"Some people are annoyed by all sorts of things," Mr Rees-Mogg replies.

"One can't please all of the people all of the time."

Asked if the UK is now a competitor to the EU Mr Juncker says "the UK will become third country.

"I don't like this perspective but that is the choice of the British people."

European Council President Donald Tusk and European Commission President Jean-Claude Juncker are now giving a press conference.

Mr Tusk thanks the press for "laughing at our jokes".

"They were never funny to be honest," he says.

Keith Doyle
BBC reporter

Image source, PA Media

Tánaiste (Irish Deputy Prime Minister) Simon Coveney has sought to reassure Unionists, saying the proposed Brexit deal poses no threat to the constitutional status of Northern Ireland,

Speaking on RTE radio, Mr Coveney said the deal offered Northern Ireland the best of both worlds for unfettered future trade into the UK and EU markets.

The World at One
BBC Radio 4

Mr Rees-Mogg acknowledges the government will need some Labour rebels to prop up support for the deal, if it is going to get through Parliament tomorrow.

"It's close," he says on World at One.

"The expectation is that... the government will have sufficient numbers but the government obviously has to then think further if that doesn't turn out to be the case," he says.

"But I'm all in favour of crossing bridges when you come to them."

The World at One
BBC Radio 4

Northern Ireland would remain in the UK's customs union under the new agreement, but there would also be customs checks on some goods passing through en route to Ireland and the EU single market.

Many people - including the DUP - have voiced concerns about this aspect of the agreement, but the leader of the House of Commons says Northern Ireland will benefit from the deal.

"The situation reflects the special position of Northern Ireland, of the peace process [the] Good Friday Agreement, and the fact that the UK's land border with the EU is between Northern Ireland and the Republic of Ireland," Jacob Rees-Mogg says.

"That's where the difference comes from," he adds.

"Things can be different and neither better nor worse."

Adam Fleming
Brussels reporter

The EU is throwing everything at making sure this deal gets through.

The lawyers and translators are working overtime to get the revised deal into the 23 EU languages.

All sorts of bureaucratic procedures are being ditched to get the deal through on this side by 31 October.

There is a meeting penciled in, here in Brussels on Sunday, for ambassadors from EU member states to chew over whatever happens in Westminster on Saturday.

If it is a thumbs down from MPs then I can imagine they will start talking about the process of another delay to Brexit.