It rounded off a dismal day for the prime minister after a trip to Yorkshire descended into chaos when he was confronted by an angry voter over Brexit in Doncaster and heckled over the suspension of parliament during a speech in Rotherham.
The prime minister was setting out plans to hand more powers to the north of England, but was derailed by an audience member, who shouted: “Why are you not in parliament sorting out the mess you’ve created?”
Mr Johnson said he was “cautiously optimistic” of getting a Brexit deal as he prepared for talks on Monday with Jean-Claude Juncker, the European Commission president, and negotiator Michel Barnier.
He claimed there was the “rough shape” of a deal in place.
But he made clear that if he was unable to get a new deal, he would not be deterred by “shenanigans” at Westminster from taking Britain out of the EU by 31 October.
His last-but-one predecessor Mr Cameron claimed Mr Johnson had behaved “appallingly” during the Vote Leave campaign.
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DUP leader Arlene Foster has dismissed a report it will offer Boris Johnson a lifeline to help him unlock a Brexit deal.
A story in The Times said the unionists had agreed to shift its red lines on Brexit, saying it could accept Northern Ireland abiding by some EU rules post-Brexit as part of a new deal to replace the Irish backstop.
The paper claimed the DUP had also privately said it would drop its objection to regulatory checks in the Irish Sea, something it had previously said was unacceptable.
But Foster insisted: “UK must leave as one nation. We are keen to see a sensible deal but not one that divides the internal market of the UK.”
“We will not support any arrangements that create a barrier to East West trade.”
She added: “Anonymous sources lead to nonsense stories.”
DUP Brexit spokesman Sammy Wilson has also rejected reports that the party is softening its stance on Irish border backstop proposals.
He told BBC Radio 4’s Today programme the claims of shifting red lines in The Times were “untrue”.
However, Wilson said he detected a different tone in Brexit talks, stating: “I think that there was a different attitude in the talks between the prime minister and the taoiseach at the beginning of the week and there seemed to be less rhetoric at those discussions from what there had been in the past.
“And I suppose that’s progress. We want to see a deal, the UK government wants to see a deal. And I think that, as the deadline approaches, the Irish government recognise the damage to their economy if they don’t try and get some kind of arrangement with the UK.”
Tory MP Bernard Jenkin has accused accuses John Bercow of running a “majoritarian dictatorship” in the Commons.
The firm no-deal Brexit supporter told the Today programme that the speaker had too much power and was acting in a “partisan” manner – while defending the PM’s decision to shut down parliament.
John McDonnell said Labour have the “opportunity of a lifetime” to change the direction of political travel in the UK.
Ahead of a visit to Glasgow today, the shadow chancellor said that the party’s “time is coming”, amid suggestions that a general election will soon be held.
McDonnell will also outline his support for Scottish Labour leader Richard Leonard.
He is expected to say: “We are presented with the opportunity of a lifetime to change the direction of political travel in the UK in a way not seen since the 1980s.
“Our time is coming and it may be coming quicker than anyone expected.”
McDonnell has also suggested Labour is seriously considering a four-day working week. “Watch this space,” said the shadow chancellor last night, promising the party would “study and draw upon” a report by Lord Skidelsky.
Former PM Gordon Brown has said Boris Johnson is “still not telling the truth” about the threat to medical supplies and food in the event of a no-deal Brexit.
It follows a statement by Scotland’s first minister Nicola Sturgeon revealing that the Yellowhammer dossier seen by her government was titled “base scenario” before it was changed to “worst case scenario” prior to its release for public consumption.
Former PM Gordon Brown warns of 'huge problems' with medical supplies in a no-deal Brexit
John Bercow has promised to use “additional procedural creativity” in the Commons this October to stop the government flouting the law and crashing Britain out of the EU without a deal.
The speaker also compared the PM to a bank robber. All the details here:
Defying MPs over Article 50 extension likened to 'robbing a bank on the basis that the cash stolen would be donated to a charitable cause immediately afterwards'
Labour is planning to take on private schools, scrapping their discounted business rates and charging VAT on fees if it comes to power, according to a leaked document.
The policy is estimated to have the potential to bring in £1.64bn a year.
More details here:
Policy is estimated to have the potential to bring in £1.64bn a year
More evidence that the title of the Yellowhammer dossier was changed from “base scenario” to “worst case scenario” – from former Tory minister Rory Stewart.
If you missed Question Time last night, this was the only good bit.
Lizzy Buchan has more on the DUP’s insistence they will not be changing any red lines on Brexit.
It follows reports the party could accept the idea of Northern Ireland abiding by some EU rules in an attempt to replace the divisive Irish border backstop.
'We will not support any arrangements that create a barrier to East West trade'
Jeremy Corbyn has urged people to register to vote as Labour ramps up its preparations for an early election. It comes amid concern that No10 was banking on the youth vote taking a hit during a snap poll, as students might not have registered in their university constituencies in time.
Momentum, the grassroots activist network, has launched a new digital tool for students to decide whether to vote at home or at university.
The pro-Corbyn group had success in 2017 with its app, 'My Nearest Marginal', which directed activists to key seats.
Laura Parker, Momentum’s national coordinator, said: “Johnson’s attempt to rig the election and stop students from registering is deplorable, and it’s heartening to see so many young people getting registered in response.
"Young people surged to Labour in the last election because we offered a concrete vision of hope.
"They turned seats like Canterbury and Newcastle-under-Lyme red, and we’re going to register tens of thousands of young people in key marginals to make sure they're part of the movement against this government which treats them with such contempt.”
Irish premier Leo Varadkar has said "the gap is very wide" between the EU and the UK in reaching a deal on Brexit.
"We have always said we would be willing to look at alternative arrangements but what we're seeing falls far short," Mr Varadkar told RTE radio.
"We are exploring what is possible. The gap is very wide but we will fight for and work for a deal until the last moment, but not at any cost.
Mr Varadkar added that he felt British Prime Minister Boris Johnson is acting in good faith in the Brexit negotiations.
Solicitor general Michael Ellis, Tory MP Alec Shelbrooke and Labour's shadow Commons leader Valerie Vaz have been sworn into the privy council, Downing Street has announced.
The ancient body provides advice to the Queen, although its function is mostly ceremonial.
NEW: Boris Johnson is to travel to Luxembourg on Monday for Brexit talks with European Commission president Jean-Claude Juncker, Downing Street has announced.
It will be the first time the leaders have met since Johnson became prime minister.
The next speaker of the House of Commons will be elected on 4 November - following John Bercow's decision to quit. He will be in the chair for the last time on 31 October - Brexit day - before formally resigning as an MP on 4 November.
Veteran Tory Ken Clarke will preside over the election, as he is the Father of the House - the MP with the longest unbroken service.
Candidates to be speaker will address MPs before a secret ballot, with successive ballots held until either a candidate wins more than 50 percent of the vote, or only one candidate remains.
A European Commission spokeswoman said: "President Juncker will hold a working lunch with the Prime Minister of the United Kingdom Boris Johnson.
"This working lunch will take place in Luxembourg."
Johnson agreed to travel to Luxembourg to accommodate Jean-Claude Juncker's plans, the spokeswoman said.
"As President Juncker has said from the beginning, he was looking forward to working constructively with prime minister Johnson and it's just that they haven't managed to meet yet," she said.
"The reason the lunch is taking place in Luxembourg is because the president has to go straight to Strasbourg afterwards as its plenary week and Mr Johnson agreed to come to Luxembourg to facilitate this happen."
But the spokeswoman said she was "not going to speculate" on what Mr Juncker hoped to achieve from the talks.
Mr Juncker will then address the European Parliament on Wednesday on Brexit, she said.
MPs are gearing up in the race to replace John Bercow as speaker of the House of Commons, as former Labour minister Harriet Harman became the latest to announce her candidacy.
It comes after Mr Bercow made his surprise statement to step down by the 31 October Brexit deadline after more than a decade in the chair.
Ashley Cowburn has taken a look at the runners and riders to be the Commons speaker.
No10 sources are playing down the prospect of a Brexit breakthrough following news Boris Johnson will meet Jean-Claude Juncker on Monday, insisting there was still "a long way to go".