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"One of the great pleasures when we leave the European Union is this idiot behind me is going to have to get a proper job," says Conservative MP Mark Francois, as a shouting protester heckles him while he speaks to BBC News.

"That's another great reason for passing this bill," the deputy chairman of the European Research Group adds.

Image source, AFP

The Withdrawal Agreement Bill (WAB) - which MPs will be voting on later - is the legislation required to implement the PM's Brexit deal in UK law.

As well as legally enabling the deal's planned 14-month transition period, it fulfils requirements on the rights of EU citizens in the UK after Brexit.

It also authorises ministers to make the so-called 'divorce payments' agreed in the deal until March 2021 - after this, they will have to get MPs' approval for further payments.

Areas that are likely to prove controversial, and therefore attract amendments from MPs, include:

• Whether the PM's deal should be subject to a "confirmatory referendum"
• Whether the UK should stay in the EU's customs union, contrary to the PM's wishes
• What sort of proof EU citizens should get when they are granted settled status
• How much of a say MPs should get over extending the transition period

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Our assistant political editor says Mr Johnson is "in difficulty" because the timetable vote is going to be "a knife-edge vote".

"If he can't get that through then, frankly, there's not much chance of him getting the whole bill through," Norman Smith says.

"He looks like he's got a majority for the broad outline of the bill but on the timetabling, he's in difficulty.

"If MPs defeat him on the timetable, there is a good chance they will defeat him on some of the details of the bill, too - and ominously for Boris Johnson, there are signs some of those Tory rebels... are lining up against him."

BBC Radio 5 Live

Image source, UK Parliament

Labour MP Jim Fitzpatrick says he will support Boris Johnson's deal despite not having had time to read the documents in full yet, claiming that it is "very similar" to Theresa May's deal.

"I've been voting in favour in principle for some months now because I don't want a no deal Brexit," he says.

"I have yet to hear a politician today saying they have read all the documents."

He adds: "Given how much detailed discussion we have already had, I think we do need to get on to get into the detail of what the agreement says and what the implementation negotiations have to be about."

An SNP MP defends his party's lack of support for the prime minister's Brexit deal.

Stephen Gethins says he and his colleagues will vote against the "programme motion" - that is, the government's request for a three-day timetable to scrutinise the legislation.

In response to the suggestion his party's lack of support was helping to frustrate the Brexit process, he says: "Those who are in favour of Brexit have done a pretty good job of frustrating Brexit."

Image source, Getty Images

Feeling a little lost on Brexit? If you're not following every twist and turn you may want to read our simple guide.

The former Conservative MP Nick Boles says he has tabled an amendment that would require the government to seek an extension of the transition period to December 2022.

Under Boris Johnson's deal, the transition - a period of time during which all of the current rules stay the same allowing the UK and the EU to negotiate their future relationship - is due to last until the end of December 2020.

However, critics of Mr Johnson's agreement fear there are no provisions to prevent a no-deal exit at the end of the transition period if no free trade agreement has been reached with the EU.

Image source, DANIEL LEAL-OLIVAS/AFP via Getty Images

Transport Secretary Grant Shapps predicts the Withdrawal Agreement Bill will be passed in the vote later.

When asked if Parliament would pass the bill as he was walking out of Downing Street, Mr Shapps says: "We should do."

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Labour MP Phil Wilson says he will back the bill if the government agrees to allowing the public the "final say" on the deal.

He will be tabling an amendment today with his Labour colleague, Peter Kyle, asking for a confirmatory referendum.

"What we're saying is we'll help facilitate the passage of this bill through Parliament, we'll vote for it, get it in the statute book, as long as it goes back to the people for a confirmatory ballot so they can compare Brexit - what it is today - with what they were promised three and a half years ago," he says.

House of Commons
Parliament

Image source, UK Parliament/Jessica Taylor

Today’s sitting in the Commons will get under way at 11.30 BST, when MPs will question business and energy ministers for about an hour.

After this, there will be an urgent question from Conservative MP David Davis on the plight of British children trapped in Syria.

This means the debate on the government’s Withdrawal Agreement Bill (WAB) is likely to start at about 13.15 BST.

MPs are expected to debate the bill until 19.00 BST, after which they will be asked whether they want to give their general approval to it by backing it at second reading, external stage.

If they do, then after this they will be asked to approve the government's three-day timetable for scrutinising the legislation - which has proved a major flashpoint with opposition MPs.

Victoria Derbyshire

Jim Fitzpatrick says he has not read any pages of the bill, or its accompanying documents, but will vote in principle for the deal in Parliament this evening.

"We need to move forward... and at some point we have to make a decision," the Labour MP says.

"I think today is decision day."