Meanwhile, Work and Pensions Secretary Amber Rudd said she was "committed" to ensuring that the United Kingdom did not leave without a deal.
Sir John reiterated his support for a second referendum on Brexit, insisting it would be "morally reprehensible" if the government allowed the country to crash out of the European Union without a deal.
The Cabinet ministers were speaking as MPs prepared for the third day of debate in the House of Commons ahead of next Tuesday's crunch vote, with Home Secretary Sajid Javid opening proceedings which are expected to be dominated by the issue of migration.
MPs are widely expected to reject the deal, negotiated between the European Union and United Kingdom, with more than 100 Conservative MPs among those opposing it.
If May's deal was voted down it might lead to "Brexit paralysis" which would see the United Kingdom in the European trading area.
'If EU intransigence persists, we must be willing to leave the EU at the end of March on World Trade Organisation terms.
Hunt warned: "If we were, as a political class, not to deliver Brexit, that would be a fundamental breach of trust between the people and the politicians".
Billionaire businessman Peter Hargreaves, who pumped more than £3 million into the exit campaign, told Reuters: "I have totally given up".
Elon Musk says the next Tesla Roadster will be a flying vehicle
In contrast, more than one million people in the United States became permanent residents in 2017 alone. In 2016, around 10,000 were awarded to foreign nationals.
Derby claim training ground 'spy' stopped by police was Leeds employee
The man was asked to leave but it wasn't followed up like it has been this time. "On a sporting level, it's bad, in my opinion". We actually caught the journalists doing it, we banned them for two days, and then everyone defended them stoically.
WSJ reveals 2019 iPhone lineup details
Today's report follows an earlier investor note by Ming-Chi Kuo , in which he cut down shipment estimates for the iPhone. Other third-party sellers on the site had the devices for even cheaper, offering flash sales to try to unload iPhones.
Asked later whether Labour would push for a second referendum if there was no general election, Corbyn said: "We're then into that consideration at that point".
Pressed on whether freedom of movement could ever be controlled in a Common Market 2.0 scenario, he said he believed it could - adding: "Should the prime minister not get the deal through, I think Common Market 2.0 is a deal many MPs could rally behind". And then, in the 2017 General Election, 80% of you voted for MPs who stood on manifestos to respect that referendum result. "Instead of embarking on another fruitless effort of renegotiation, it is time to hand this crucial decision back to the people".
Conservative and opposition MPs have slammed a top minister for fear-mongering after he said derailing or stopping the government's Brexit plan would see a rise in far-right extremism.
Lawmakers are set to vote on May's Brexit deal on Tuesday, after she shelved plans for a vote in December when it became clear that not enough lawmakers from her own party or others would back the deal she agreed with Brussels.
The Labour leader made the admission as Transport Secretary Chris Grayling denied there was a "void" in government over Brexit during an interview with Sky News.
But she stressed: "I intend to work with colleagues to make sure we avoid it".
It would see the United Kingdom keep the Withdrawal Agreement thrashed out by the prime minister with Brussels, but significantly rewrite the Political Declaration to state an intention to stay in the single market.