Conservative lawmaker Phillip Lee resigned as a justice minister Tuesday so he could speak out against the policy on Brexit. "If, in the future, I am to look my children in the eye and honestly say that I did my best for them I can not, in all good conscience, support how our country's exit from the European Union looks set to be delivered".
Heidi Allen was one of the 14 Tory rebels who struck a deal with the Prime Minister last night in order to back the EU Withdrawal Bill in parliament last night. It also increases the prospect of MPs forcing a referendum on the terms of the eventual deal or even of a snap election before the end of the year.
The concession allowed the government to defeat a Lords amendment calling for parliament to have "a meaningful vote" on any eventual Brexit deal by 324 votes to 298.
"It claims that it's to prevent no deal or a bad deal and give Parliament a meaningful vote and a say on that. It enables parliament to dictate to the government their course of action in global negotiations". "I'm looking forward to the discussions and it's right to say that I'll be looking at potential drafts of what an amendment could say", he said.
Issues most likely to provoke rebellions include the "meaningful vote" and the question of whether the date of Brexit should be written into law - both due this afternoon - as well as whether the United Kingdom should stay in the customs union or EEA, which should come early on Wednesday evening. "And I can not bring myself to vote for it in the bastion of liberty, freedom and human rights that is our Parliament".
Dr Lee added: "If Brexit is worth doing, then it is certainly worth doing well; regardless of how long that takes. It is, however, irresponsible to proceed as we are". The government earlier had said it would not support that amendment.
"I trust our PM to honor the undertaking she gave", said Anna Soubry, one of the pro-EU Tory rebels.
Government sources confirmed ministers will now discuss the possible incorporation of these elements of Mr Grieve's proposals into the legislation.
May had faced a showdown with lawmakers who wanted the power to force her government to go back to the negotiating table if they reject a Brexit deal, testing her plans for leaving the European Union.
It is thought that both the government and the Remainer group of Tory MPs consider the outcome to be a success.
Mr Grieve told Sky News he had received "assurances" from Theresa May in a meeting on Tuesday afternoon that the MPs' concerns would be addressed.
A series of further votes will take place on Wednesday, with no defeats expected after ministers agreed compromise wording over post-Brexit plans for a "customs arrangement".
"Grieve's amendment puts that right and in a way Govt could and should accept it".
The Government has managed to fend off a major rebellion after parliament rejected an amendment to bring a "meaningful vote" on the final Brexit deal. "I am trying to negotiate the best deal for Britain".
She had already agreed to give MPs a vote on the final Brexit deal, but rejecting it could see Britain crash out of the European Union with no agreement.
However, despite backing down, pro-Remain Tories signalled they would not be easily consoled by a compromise offered by ministers.