Boris Johnson will face a vote by MPs this Thursday on whether to formally investigate him for misleading parliament.
Commons Speaker Sir Lindsay Hoyle confirmed that the vote will take place after other business has finished.
The debate will focus on whether Johnson misled MPs when he claimed in December that Covid rules were followed at all times in Number 10.
MPs will then get vote on whether to refer the matter to the Commons Privileges Committee in a move designed to embarrass backbench Tory MPs who will be forced by party discipline to back the Prime Minister.
As a result the vote is unlikely to succeed and will be held while the PM is due to be en route to India on a trade and diplomatic visit.
Johnson has been accused of lying after the Metropolitan Police issued more than 50 fixed penalty notices over lockdown parties, including £50 fines for Johnson himself, his wife Carrie and chancellor Rishi Sunak.
The Labour motion, in the name of Keir Starmer, is still being drafted but it is likely to call for on MPs to refer the Prime Minister to the Privileges Committee over claims he deliberately misled Parliament by saying “all guidance was followed completely” in relation to the gatherings
If approved the committee could investigate and find Boris Johnson in contempt of parliament.
Liberal Democrat leader Sir Ed Davey urged Tory MPs to "do their patriotic duty" in Thursday's vote on the Prime Minister's conduct.
He said: "The British public have declared Boris Johnson a liar. Now it's time for Parliament to do the same.
"The country cannot afford a Prime Minister who breaks the law and lies about it, especially when families are facing a cost-of-living crisis.
"Johnson has taken the British people for fools for far too long, and it's time for Conservative MPs to show where they stand. They must do their patriotic duty and kick Boris Johnson out of Downing Street once and for all."
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