MPs are set to vote on whether to keep Britain in the EU longer than planned after Prime Minister Theresa May's authority over Brexit sustained another major blow.
The vote on extending Article 50 comes after MPs defied the Government and dramatically decided to rule out a no-deal withdrawal from the EU in scenes some Tory Brexiteers described as "chaotic".
Business Secretary Greg Clark, who was one of four Cabinet ministers who did not take part in the vote, signalled he had not resigned over the matter because he and colleagues believe they acted in line with Government policy.
After the defeat, Mrs May made it clear that she intends to put a third "meaningful vote" on her Brexit deal to the Commons within days.
Following the Commons move on no deal, the Government put down a motion for debate on Thursday that offers to seek a one-off extension of Article 50, delaying the scheduled Brexit date of March 29 to June 30 if MPs approve the deal negotiated with the EU by next Wednesday.
However, the PM warned if the deal – which has already been twice rejected by overwhelming majorities – is not approved, a longer extension will be needed, requiring Britain to take part in the European Parliament elections in May.
"I do not think that would be the right outcome," the Prime Minister said.
"But the House needs to face up to the consequences of the decisions it has taken."
The Business Secretary, who along with Cabinet colleagues David Mundell, Amber Rudd and David Gauke, and Claire Perry who attends Cabinet, did not vote on the key motion, defended the move.
Mr Clark told ITV's Peston: "Once that became the only motion there, then for me and my colleagues to vote against the last chance Parliament had to stop us leaving with no deal on March 29 is something we couldn't do.
"The whipping was decided very late in the day, not after a collective discussion about it as most policies are.
"It has been completely consistent with Government policy to date that we should not leave on March 29 without a deal.
"We acted completely in accordance with long-standing Government policy."
Asked if Mrs May should be more flexible on Brexit if Labour is, Mr Clark said: "I think everyone needs to be flexible."
Pressed on whether the PM should consider a customs union-based option if there was a cross-party majority for it, Mr Clark said: "I think the Prime Minister and Parliament should promote a sense of Parliament establishing what there is a big majority for."
Steve Baker, leading member of the European Research Group (ERG) of Tory MPs, branded the situation a "fiasco".
He told ITV's Peston: "It is, of course, extraordinary to see such a collapse in discipline.
"And in any other circumstances, of course, they would be fired.
"Of course I'm sad about it. I didn't get into politics for this chaos, this fiasco."
Mr Baker said the ERG could try to prevent the law being changed to alter the scheduled exit date from the EU.
He said: "As a matter of practice, unless the law is changed, we leave on March 29.
"There are some things that we could do to prevent the law going through in the time that is available."
Tory Brexiteer Andrea Jenkyns, who resigned a junior Government post over EU withdrawal, said Mr Clark should quit, telling ITV's Peston: "I think him and the other ministers should resign."
Paymaster General Mel Stride said a further meaningful vote would be held by next Wednesday, just ahead of an EU summit in Brussels.
Mr Stride told BBC2's Newsnight: "What the Prime Minister has made very clear is that the best way forward still remains a deal.
"And that Parliament will have another opportunity to say yes or no to a deal."
After the 149-vote rejection of her Withdrawal Agreement on Tuesday, Mrs May suffered a second defeat in as many days when MPs backed the cross-party amendment rejecting a no-deal Brexit under any circumstances on Wednesday.
In a surprise move, the Commons voted 312 to 308 – a majority of four – in favour of the proposal tabled by former Conservative chairman Dame Caroline Spelman.
The vote was later confirmed by a more emphatic 321 votes to 278, overriding a Government motion from Mrs May that would have rejected no-deal on the scheduled date of March 29 but left it on the table for other times.
Work and Pensions Minister Sarah Newton quit after defying the whips to vote for the cross-party proposal.
Labour leader Jeremy Corbyn told MPs Mrs May had repeatedly offered a choice between her deal and no deal, adding: "In the last 24 hours, Parliament has decisively rejected both."
Mr Corbyn said: "Parliament must now take control of the situation.
"Myself, the shadow Brexit secretary and others will have meetings with members across the House to find a compromise solution that can command support in the House."