Reports say British MPs will vote on Prime Minister Theresa May’s Brexit deal on Tuesday, 15 January.
The Commons vote was called off last month by the PM, who was facing defeat, but sources say the vote will not be delayed again.
It is also understood the government will set out further reassurances on the controversial backstop.
Meanwhile, more than 200 MPs have signed a letter to May, urging her to rule out a no-deal Brexit.
It comes as a major exercise involving more than 100 lorries is being carried out in Kent to test out how to manage traffic queues near the Channel ports in the event of a no-deal Brexit.
The PM’s deal – which covers the terms of the UK’s divorce and the framework of future relations with the EU – has already been agreed with EU leaders. But it needs to pass a vote by MPs before it is accepted.
The UK is due to leave the EU on 29 March 2019 whether the deal is passed by MPs or not.
Mrs May’s deal is facing opposition from many of her own MPs, as well as Labour and other opposition parties including the Remain-supporting Liberal Democrats.
The DUP – which Mrs May’s Conservative Party relies on for a majority in Parliament – has said it will not back the deal.
But Brexit minister Kwasi Kwarteng dismissed suggestions that the government had accepted it would lose next week’s vote and was planning on returning to Brussels.
“The plan is to win the vote on Tuesday, or whenever it comes,” Mr Kwarteng said.
He said a week was “a very long time in politics” and he was “very hopeful” the deal would be voted through.