Parliament will sit on a Saturday for the first time in 37 years to vote on Boris Johnson’s Brexit deal.

The PM has been trying to convince MPs to support the agreement he secured with the EU, ahead of what is expected to be a knife-edge vote in the Commons.

His former DUP allies and opposition parties plan to vote against it.

But at least nine Labour MPs are expected to rebel and the PM is hoping to be backed by some of the Tory MPs he sacked for opposing him last month.

BBC deputy political editor John Pienaar said numbers for the vote looked “painfully tight”, adding Mr. Johnson “either have to win round the DUP – which looks close to impossible – or look elsewhere for votes”.

Business in the House of Commons will start at 9:30 BST – the first weekend sitting since the invasion of the Falklands in 1982.

Mr. Johnson will make a statement to the House and face questions from MPs before they move on to a debate about the deal.

The timing of any votes depends on which amendments are chosen by the Speaker of the Commons, John Bercow, but they are not expected before 14:30.