Boris Johnson will definitely address the Commons this afternoon, the government has confirmed.

We don't know what time it will be yet as he's currently fourth in line - after statements on Thomas Cook, Brexit planning and Iran.

Boris Johnson's motorcade is making its way back to central London.

From the pictures we're seeing, it looks like he's now in the western suburbs of the city, having left the M4.

Anyone who's made that journey before knows what a nightmare it can be in rush hour but he seems to be making decent progress.

Victoria Derbyshire

John Healey, shadow housing secretary, says Boris Johnson can't be trusted to call for an extension from the EU to rule out a no-deal Brexit.

Normally we could rely on the fact that a prime minister would abide by the law but in his case we can't, he says.

He calls for Mr Johnson to resign and apologise to the country. He says he must come to Parliament to explain why he broke the law.

His party would, he says, call for an election once "the risk of a no-deal Brexit" was removed.

"We have to have a government in this country - all we've got is chaos and crisis.

Boris Johnson touches down in London on the RAF Voyager a little over an hour before the scheduled reopening of the Commons.

Norman Smith
Assistant political editor

I'm not sure that proroguing Parliament again would be so easy for Boris Johnson. I think the courts would say, "Hold on, we've told you once, we're not going to tell you again: you do not have a good reason for proroguing Parliament".

He has all of these brand new shiny bills - 20,000 more police officers, more money for the NHS - designed as a pre-election shopping list, but will any of that get through the Commons? Can he pass any legislation?

The basic problem is that he has become a political punchbag for Parliament, he's just swinging there unable to do anything, taking hit after hit after hit.

We could be in for an extraordinary three or four weeks when not much happens [in Westminster] and and you're just left with Boris Johnson stranded, drifting towards the 31 October deadline.

Victoria Derbyshire

Sir Geoffrey Clifton-Brown, Conservative MP for the Cotswolds, believes Boris Johnson shouldn't resign but will face plenty of consequences.

"I don't think he's going to apologise because he did what he thought was right at the time," he says.

Lord Heseltine, a former Conservative deputy prime minister, says Mr Johnson is not going to resign. "Normally a PM humiliated like this will go, but that is not Mr Johnson's way."

Chairman of the Brexit Party Richard Tice says Mr Johnson has "lost control of events" and the only thing he could do was to call a vote of no confidence in himself.

Mr Tice says he needs to challenge the other side to say "why won't you go to the people?".

On the matter of Jacob Rees-Mogg's comments about the Supreme Court ruling being a "constitutional coup", Lord Heseltine and Sir Geoffrey agreed it had been a "lapse of judgement" on his behalf.

BBC Monitoring has been taking a look at the view from over the Channel of the Supreme Court ruling.

It says Germany's Tagesspiel wrote that Boris Johnson is "known for his flexible concept of truth".

And although it says he has previously misled the nation multiple times without consequences, he might now trip up over a "mortal sin" that exists only in England: "Never lie to the Queen!"

Der Spiegel also has tough words for Mr Johnson, accusing him of being "prepared to ruthlessly violate every rule".

"If the past few weeks have taught us anything, it is that this head of government is capable of any surprise," it says.

The Irish Independent says the PM's "uncomfortable relationship with the truth" presents a huge problem for talks with Irish and EU leaders.

"How on earth can they be expected to take him, or his government, seriously?" the paper asks.

In Italy, La Repubblica says, bluntly: "Brexit has wrecked everything."

It says the Conservative Party is run by "a gang of ultra-nationalists", while the Labour Party is being torn between "neutrality" and Europeanism.

And Il Foglio, also in Italy, was struck by Lady Hale and her spider brooch, praising her for bringing "a torn UK back to normality, sounding a wake-up call to Boris Johnson and his adviser Dominic Cummings, the wizard of Brexit, who has proved to be no genius".

Boris Johnson should "apologise, if not stand down" before he does anything else, says shadow home secretary Diane Abbott.

Asked what should be discussed in Parliament, she says: "There's been talk that the Attorney General Geoffrey Cox told the government that closing down Parliament in the way they did was legal and the Supreme Court has found otherwise. So we'd like to know more about that."

She adds that the collapse of Thomas Cook must be discussed.

"But above all we need to talk about the Supreme Court finding."

If you're asking yourself what's happening when then we should have the answers.

The prime minister is expected back in London mid-morning.

At 11:30 BST, the Commons swings back into action.

Usually we'd be gathering round the screen for Prime Ministers' Questions at midday but that won't be happening today. (Under the rules, questions have to be received three days in advance of PMQs).

Instead, MPs will be able to table Urgent Questions to force ministers to make statements.

Commons Speaker John Bercow has said he is open to requests for an emergency debate as well.

The Lords will be back on their red benches a little later, at 15:00 BST.

Norman Smith
Assistant political editor

It's pretty clear that Boris Johnson and his team have decided to tough this out.

There's not going to be any change of strategy, there's no sign of any contrition, there's no hint of an apology and absolutely no question at all of any resignation.

It seems that Boris Johnson and his team are going to carry on doubling down on their existing strategy, which is to present Brexit as essentially a tussle between "the people" - led by Boris Johnson - against Parliament and the "Remain elite".They're quite happy to present it as such, and to present the judges as part of that elite.

BBC News Channel

The events of the past 24 hours could undermine Leave voters' confidence in Boris Johnson's ability to stand up to the "liberal elite", says Sir John Curtice, professor of politics at the University of Strathclyde.

Citing one snap poll of Leave voters, he notes there is a "hint" of a slight move back to the Brexit Party - which he describes as "the nightmare scenario" for the prime minister.

If Mr Johnson does reach a deal with the EU, he adds, it is not clear how he will get the required legislation through the Commons and the Lords by 31 October.

"The timetable looks very, very tight indeed."