MPs are to debate and vote on the next steps in the Brexit process later, as Theresa May continues to try to get a deal through Parliament.
A series of amendments – designed to change the direction of Brexit – will be considered in the debate, which is expected to be a routine procedure.
Report said the PM could be facing another defeat.
Some Tory Brexiteers are refusing to back the government, she said.
No 10 insists Mrs May still plans to hold a vote on a deal as soon as possible but Labour has accused her of “running down the clock” in an effort to “blackmail” MPs into backing her deal.
The prime minister has asked MPs to approve a motion simply acknowledging that the process was ongoing and restating their support for the approach.
But several MPs have tabled amendments – which set
out alternative plans – including one from Labour that would force the government to come back to Parliament by the end of the month to hold a substantive Commons vote on its Brexit plan.
Another, from the SNP, calls on the government to pass a law leading to the Brexit process being halted.
Commons Speaker John Bercow is yet to decide which of these will actually be considered by MPs.