Wednesday marks 100 days until Brexit.
Brexit secretary Steve Barclay said that unless MPs back May's deal when it returns to the Commons in January the default option is for the United Kingdom to leave without any exit arrangement in place.
"This is all speculation, but what I am looking at is trying to find an alternative that, in the event we cannot agree to this deal, that there could be a further deal that looks at a more minimalist approach that allows us to leave with some kind of deal and some kind of implementation period that avoids a cliff edge, that avoids uncertainty for businesses and travellers and so on". Ministers insisted the steps were sensible precautions.
Several ministers are understood to have signalled they would resign in the event of a no-deal, including Work and Pensions Secretary Amber Rudd, who is reported to have told colleagues: "Just because you put a seat belt on, it doesn't mean you should crash the vehicle".
Adding that Britain will have a positive future post-Brexit if it gets a deal, she said "we have to put politics aside" and talk across the House to build a consensus, putting "country before politics".
As a result, Mr Blackford said: "The leader of the opposition has become the midwife for Brexit".
"This is the reality of a no-deal Brexit: soldiers on the streets, medicines being stockpiled in the NHS (health service), and airports and ferry terminals grinding to a halt", Labour Party lawmaker Ian Murray said.
"Firms are pausing or diverting investment that should be boosting productivity, innovation, jobs and pay, into stockpiling goods or materials, diverting cross border trade and moving offices, factories and therefore jobs and tax revenues out of the UK".
Director-General Adam Marshall said "the lack of certainty over the U.K.'s future relationship with the European Union has led to many firms hitting the pause button on their growth plans".
Britain ramps up no-deal Brexit preparations, including military help if necessary
"There will be an very bad lot of fuss and noise and then people will realise that they voted to trigger Article 50, the terms of which are absolutely clear".
The British government and the European Union sealed a Brexit deal last month, but May postponed a parliamentary vote on it last week when it became clear legislators would overwhelmingly reject it.
With just over 100 days until Britain is due to leave the EU, Prime Minister Theresa May is yet to win the support of a deeply divided parliament for the deal she struck last month with Brussels to maintain close ties with the bloc. May's authority has also been shaken after a no-confidence vote from her own party that saw more than a third of Conservative lawmakers vote against her.
Corbyn said the move was "the only way I can think of ensuring a vote takes place this week". "We have been clear the UK Government must work with us if we are to secure the best possible deal for the whole of the UK".
Sir Keir said that "serious consideration" should be given to extending the two-year Article 50 process leading to Brexit on March 29 2019.
Jeremy Corbyn has tabled a motion of no confidence in Theresa May as Prime Minister after she attempted to quash support for a Final Say referendum in a statement to MPs.
Focusing on the Prime Minister rather than the Government means there is no statutory requirement for the issue to be debated and voted on.
The government would have to allow parliamentary time for Corbyn's censure motion to be put to vote, which it has declined to do.
"Members are responsible for their own conduct and should apologize if they've committed a misdemeanor", he said as he struggled to keep control of the chamber amid Tory anger over the remarks and Bercow's handling of it - telling one MP: "don't argue the toss with me".