They planned to vote against a government proposal, which they said did not offer them a "meaningful vote".
Admitting his rebellion may lead to the ousting of Mrs May, he said: "We could collapse the Government and I can assure you, I wake up at 2am in a cold sweat thinking about the problems we have put on our shoulders".
Peers are due to vote tonight to support a rebel amendment tabled by Conservative Party ex-minister Lord Hailsham pledging Parliamentary votes on the outcome of Government's talks with Brussels.
Also on the Brexit agenda for Parliament on Tuesday is the expected appearance of Arron Banks, the businessman who financed one of the pro-Brexit campaigns during the 2016 referendum.
"The alternative", Mr Grieve said, "is we've 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'm following over the edge of a cliff".
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The CEO of the company, Pete Lau, says - We are happy with these results and most important, that users like the new phone . Previously, OnePlus's benchmark for that goal was three months, with both the OnePlus 5 and OnePlus 5T earning that trophy.
He told The Telegraph: "I thought these issues had been resolved hours ago, but at the last minute an element has been changed in a way that is unacceptable".
Some Leavers were anxious MPs would vote down the deal and then instruct the Government to keep the United Kingdom in the Single Market or customs union - or perhaps the EU entirely.
Lee said he had had "conversations with ministers at all levels who are concerned about the direction of travel". "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".
British Prime Minister Theresa May speaking to the BBC on Sunday.
The government says the new law is needed to ensure a "smooth and orderly Brexit" as the United Kingdom prepares to leave the European Union in March 2019.
The upper House of Lords, which wants to keep Britain close to the European Union after the United Kingdom leaves in March, will rake over the EU (Withdrawal) Bill on Monday (Jun 18), before it returns to the lower House of Commons on Wednesday.
Afghanistan’s president extends ceasefire with Taliban
President Ashraf Ghani has extended the government's ceasefire , which was announced earlier this month. Both sides had declared a three-day truce for the occasion.
Mr Grieve, who had talks on Thursday with ministers, said he could not understand why the change was made.
But she said she had to "balance" that with ensuring "we don't overturn the decision of the British people".
The PM told BBC1's The Andrew Marr Show: "I did indeed meet a group of my fellow MPs".
For her part, May told the BBC that she had "undertook to consider their concerns" but insisted that Parliament "cannot tie the hands of government in negotiations" with the EU.
The government's amendment to the EU Withdrawal Bill sets out what must happen if the prime minister announces - before 21 January 2019 - that no deal has been reached with the EU either on the withdrawal agreement or the future relationship.
"I then felt that I could not support the Lords amendment as it stood which would have essentially kept us in the European Union against my constituents wishes".
Excessive Heat Warning for Twin Cities metro
A risky combination of heat and humidity will be in the region Fridayafternoon and continue at least through early Sundayevening. Heat advisories are in effect from northern Arkansas to southern MI and excessive heat warnings are in effect in St.