The leader of the Scottish National Party in Westminster was thrown out of the House of Commons after saying Boris Johnson had misled the House.
Ian Blackford said the Prime Minister had misled the House when he said he did not know about parties held in Downing Street.
The Speaker of the House repeatedly asked him to withdraw his comment and say the Prime Minister had 'inadvertently misled' the House.
When Ian Blackford refused the Speaker ordered him to leave the House.
Mr Blackford was referencing statements made by the Prime Minister in the House of Commons on December 8.
Speaker Sir Lindsay Hoyle asked SNP Westminster leader Ian Blackford to confirm he had withdrawn claims that the Prime Minister had misled the House.
Mr Blackford replied: “That the Prime Minister may have inadvertently misled the House.”
Sir Lindsay countered: “To help me help the House, you’ve withdrawn your earlier comment and replaced it with inadvertently?”
Mr Blackford said: “It’s not my fault if the Prime Minister can’t be trusted to tell the truth.”
Amid raucous shouting from the Tory benches, the Speaker said: “Under the power given to me by standing order number 43 I order the honourable member to withdraw immediately from the House.”
Mr Blackford walked out the chamber before the Speaker had finished, with Sir Lindsay noting: “It’s all right, we don’t need to bother.”
The Sue Gray report released today said there were failures in leadership in Downing Street that allowed parties to go ahead.
Full details of 12 events have not been released as they remain under police investigation.
The debate after Boris Johnson's apology for what happened in Downing Street during lockdown saw the PM slammed by his predecessor Theresa May.
Conservative former Prime Minister Theresa May said: “The Covid regulations imposed significant restrictions on the freedoms of members of the public. They had a right to expect their Prime Minister to have read the rules, to understand the meaning of the rules and indeed those around him to have done so too and to set an example in following those rules.
“What the Gray report does show is that Number 10 Downing Street was not observing the regulations they had imposed on members of the public, so either my right honourable friend had not read the rules or didn’t understand what they meant and others around him, or they didn’t think the rules applied to Number 10. Which was it?”
Mr Johnson replied: “No, Mr Speaker that is not what the Gray report says, I suggest that she waits to see the conclusion of the inquiry.”
A Conservative former minister said Boris Johnson has lost his “full-throated support”.
Andrew Mitchell said: “Does he recall that ever since he joined the party’s candidates list 30 years ago until we got him into Number 10 he has enjoyed my full-throated support?
“But I am deeply concerned by these events and very concerned indeed by some of the things he has said from that despatch box and has said to the British public and our constituents.
“When he kindly invited me to see him 10 days ago, I told him that I thought he should think very carefully about what was now in the best interests of our country and of the Conservative Party, and I have to tell him he no longer enjoys my support.”
The Prime Minister replied: “I must tell him respectfully, my right honourable friend, great though the admiration is that I have of him, I simply think that he is mistaken in his views and urge him to reconsider upon full consideration of the inquiry.”
SNP Westminster leader Ian Blackford said the Sue Gray’s report was a “farce” with “no facts”.
During his speech, Mr Blackford was also repeatedly asked by Commons Speaker Lindsay Hoyle to withdraw the word “misled”, after accusing Prime Minister Boris Johnson of having “wilfully misled Parliament”.
Mr Blackford told MPs: “So here we have it. The long-awaited Sue Gray report, what a farce. It was carefully engineered to be a fact-finding exercise, with no conclusions. Now we find it’s a fact-finding exercise with no facts.
“So let’s talk facts. The Prime Minister has told the House that all guidance was completely followed, there was no party, Covid rules were followed and that ‘I believed it was a work event’.
“Nobody, nobody believed it then. And nobody, nobody believes you now, Prime Minister. That is the crux – no ifs, no buts – he has wilfully misled Parliament.”