Sky News correspondent David Blevins confirmed that a source close to the party said they did not see how the party could support the amended deal following Geoffrey Cox's legal advice.
Mr Derrick said if the prime minister's deal was defeated by only a narrow margin in Tuesday's vote "that might encourage optimism" that a tweaked deal could be agreed before the end of the month.
But Tuesday's vote also meant that an array of possibilities open up including a second referendum or general elections - keeping general market volatility levels on the pound high.
"It is not sustainable, the current situation in Parliament".
"There's been a swift move lower in the pound. after the government's top lawyer failed to verify claims that the latest concessions from the European Union amount to a legally binding guarantee on the backstop", said XTB analyst David Cheetham.
He said it was a political judgement on whether both Brussels and the United Kingdom will make sufficient efforts to avoid the backstop or make arrangements to replace it, not a legal one.
On a day of high drama in Westminster, the Cabinet gave its backing to the package at its weekly meeting chaired by the Prime Minister at 10 Downing Street.
What Brexit votes are happening this week?
Her frantic trip sparked anxiety among some MPs, who feared they might not have enough time to scrutinise what she agreed to before being asked to vote. "Let's get this done".
Brexiteers in Mrs May's party had accused her of surrendering to the European Union, and it was not clear if the assurances she agreed to would be enough to win over the 116 additional MPs she needed to turn around the crushing defeat her deal, suffered in January.
In a statement to the Commons, Mr Cox told MPs: "There is no ultimate unilateral right out of this arrangement".
The immediate reaction was cautious from the Northern Irish Democratic Unionist Party (DUP) which props up May's minority government.
The Prime Minister claims to have addressed concerns over the Irish backstop, less than 24 hours before a meaningful vote. Others questioned why the assurances were not included in the Withdrawal Agreement.
"The attorney general's advice is that the legal risk remains unchanged", Conservative MP Andrea Jenkyns tweeted.
Labour's shadow Brexit secretary, Sir Keir Starme, said the government's plan was now in tatters.
"Now is the time to come together to back this improved Brexit deal and to deliver on the instruction of the British people", she said.
But by noon, the DUP and the rebel Tory MPs indicated the changes Ms.
However, parliament is expected firmly to reject a "no-deal" Brexit as well, so MPs would then vote again on Thursday - on whether government should request a delay to the leaving date to allow further talks.
"The further agreement yesterday provided additional clarity, reassurance and guarantees sought by some to eliminate doubt or fears, however unreal, that the goal was to trap the United Kingdom indefinitely in the backstop", Varadkar said.
"It is not - these doubts and fears can be put to bed".
Mrs May had dashed off to Strasbourg on Monday for a last-gasp bid to wrest concessions from European Union leaders ahead of Tuesday's parliamentary vote on Britain's planned split from the bloc in just 17 days.
Leader o the opposition Jeremy Corbyn said: "This evening's agreement with the European Commission does not contain anything approaching the changes Theresa May promised Parliament, and whipped her MPs to vote for".
If this happens and a woman is the first one to take a step onto Mars, that is going to be an awesome moment to see. Construction on Gateway - an orbiting lunar outpost - is expected to begin construction as soon as 2022.
Mozilla's offering is hardly innovative, but it's easy to use and feels less cumbersome than other services. Mozilla has publicly launched its Firefox Send file-sharing service after a lengthy testing period.
Rishabh Pant (w), Kedar Jadhav, Vijay Shankar, Ravindra Jadeja, Bhuvneshwar Kumar, Kuldeep Yadav, Mohammed Shami, Jasprit Bumrah. Marcus Stoinis, returning from a thumb injury, contributed 20 and Jhye Richardson made a breezy 29 down the order.
During his testimony, Cohen told the committee: "I have never asked for, nor would I accept, a pardon from President Trump". Katie Hill, a Democrat, said in an interview Sunday that she expected Cummings to refer Cohen for prosecution.
Despite O'Rourke's narrow loss, his high-profile candidacy helped Democrats retake House seats and control of the chamber. Beto O'Rourke will announce on Thursday that he is running for president in 2020, according to El Paso TV station KTSM-TV.
Ethiopia Airlines released a statement stating they had lost contact with the flight just six minutes after it took off. The flight had unstable vertical speed after take off , said flight tracking website Flightradar24 on its Twitter feed.
But it resurfaced online when a Facebook post was directed at bored teens, asking them to be a part of this #Trashtag Challenge . Within a few days, the trend has caught on and people all over the world are enthusiastically participating in this clean-up.
Sanders on Monday unfavorably compared Democrats' response to that of Republicans following comments made by Rep. During the now-infamous moment, Acosta refused to pass the microphone to a female White House aide.
Google is the disputed king when it comes to software and associated technologies, but the same can not be said for hardware. Rumors of a Pixelbook 2 have been swirling since the company's hardware event last October though it has yet to be released.
Oil prices rise on ongoing OPEC-led supply cuts
America will add 4m barrels per day (bpd) of oil, mostly from the prolific Permian Basin in Texas. At the time of writing, Brent crude traded at US$67.29 a barrel, with WTI at US$57.85 a barrel.
USA prosecutors probing Facebook's data deals
The logo of Amazon is seen on the door of an Amazon Books retail store in New York City, U.S., February 14, 2019. Facebook did not respond to questions about the focus or nature of the investigation.
Google Releases Android Q Beta 1
There's a new Sharing Shortcuts feature that "let users jump directly into another app to share content". Controlling apps that access photos, videos and audio files have become easier to manage on Android Q.
Trump Grounds All U.S. Boeing 737 Max Planes
The Federal Aviation Administration has also backed the jet's airworthiness and said it is reviewing all available data. A almost brand-new Boeing 737 Max 8 crashed shortly after takeoff in Ethiopia Sunday, killing all 157 people on board.
'Bomb Cyclone' Winter Storm Moving Across Central U.S.
The storm will sweep right through the Rockies, the Upper Midwest, the central and northern Plains and more of the US heartland. The term "bomb cyclone " has plenty of dramatic flair, but it's a nickname for the tongue-tying weather term " bombogenesis ".