The government tabled an amendment to the EU Withdrawal Bill on Thursday following crunch talks with pro-EU Conservative backbenchers.
The group, spearheaded by former attorney general Dominic Grieve, are demanding a greater role for the House of Commons in the event of Prime Minister Theresa May failing to agree a Brexit deal with the EU.
This includes a call for a more “meaningful vote” on the Brexit process for MPs.
The government bought off a potential rebellion during votes on the EU Withdrawal Bill earlier this week, after promising to “engage positively” with rebels’ concerns.
However, subsequent efforts at reaching a deal appear to have ended in failure.
Pro-EU backbencher Anna Soubry posted on Twitter: “I understand the Govt has tabled an amendment that has not been agreed by Dominic Grieve.
“Grateful for the conversations but without consultation what was agreed earlier today has been changed.”