On Tuesday, the Prime Minister only just managed to persuade potential rebels to back down minutes before the crunch vote to an amendment scheduled by pro-EU Tory ringleader Dominic Grieve - demanding measures be put in place to avoid the United Kingdom leaving with "no deal".
Who is Dominic Grieve?
In a day of drama, May's position seemed suddenly weaker when junior justice minister Phillip Lee, who has always been critical of Brexit strategy, resigned and said he would vote against the government.
The Labour Party's Chuka Umunna, who backed staying in the European Union, welcomed the concession as the end of the government threatening to allow Britain to crash out of the European Union without a deal.
But if this does happen, he held firm that Parliament must have an advisory vote on what the Prime Minister should do.
"The alternative is that we have all got to sign-up to a slavery clause now saying whatever the Government does, when it comes to January, however potentially catastrophic it might be for my constituents, and my country, I'm signing in blood now that I will follow over the edge of the cliff. And that, I can tell you, I am not prepared to do".
Former Attorney General Dominic Grieve told the BBC on Friday that the wording had been changed at the last minute after days of talks between himself and ministers and he could not understand why. They insist there will be "significant consequences" for Brussels if the Commission maintains its negotiating position.The source adds: "There will be very large operational capability gaps on day one, with no obvious ways of plugging them."We are at the heart of PRS, and the intelligence?"
Solicitor General Robert Buckland said Mr Grieve's plan may give European Union officials the impression that Parliament could "trump" whatever the United Kingdom government agreed. "That this House do now adjourn".
OnePlus 6 sales top one million units in less than a month
The major specifications of OnePlus 6 listed below could compete with even the high-end smartphone releases of Samsung and Apple . The company is giving out a cashback of Rs 2000 to buyers paying for the phone using Citibank Credit or Debit cards.
"Parliament must be given a meaningful vote on all possible outcomes of Brexit - and this must be guaranteed in writing".
The former Justice minister Phillip Lee, who quit the frontbench last week over fears that fudges over Brexit would lead to "the worst of both worlds", has indicated that other colleagues might do the same.
He said: "Theresa May has gone back on her word and offered an amendment that takes the meaning out of the meaningful vote". "It's up to them to make their own judgments about when it is right for them, and how to express those views - it's not up to me".
If MPs reject the agreement reached by Mrs May with Brussels, or if no deal has been obtained by January 21, Parliament will be offered the opportunity only to vote on a "neutral motion" stating that it has considered a minister's statement on the issue.
May admitted the "Brexit dividend" would not be enough to generate all the extra health service funds.
If no withdrawal agreement is reached by the end of November 2018 - MPs will get to vote on a government motion setting out its proposed course of action.
What is Theresa May's response?
Signalling rebels will seek to remove the unamendable nature of the government's proposal, she tweeted: "Would be amusing if only it wasn't such a serious issue, preventing the most destructive Brexit matters to the majority in parliament".