BORIS JOHNSON was left clinging on to his premiership today as pressure grew for him to step down after it emerged that he personally may have broken lockdown rules last December, with Labour demanding answers over Covid rule-breaking. 

On Sunday, fresh evidence came to light showing the Tory leader hosting a quiz at Downing Street while coronavirus restrictions remained in place across the country. 

Images published by the Sunday Mirror showed Mr Johnson sitting beneath a portrait of Maggie Thatcher while reportedly playing quizmaster flanked by colleagues, one of whom is draped in tinsel, as London was in Tier 2 restrictions.

The government has repeatedly denied any rule-breaking, despite multiple reports of parties being held at No 10 throughout the second wave of the virus late last year. 

The quiz is said to have taken place on December 15, only three days before an alleged rule-breaking Christmas party in No 10, which is currently being investigated by Cabinet Secretary Simon Case.

Mr Case is looking into a total of three alleged rule-breaking government gatherings last winter, but is said to have the power to widen the scope of the investigation.

Following the revelations, Labour deputy leader Angela Rayner said the Prime Minister was unfit to lead the country, calling for him appear in the House of Commons to answer questions over the issue.

“Despite repeated denials of parties in No 10, it has now transpired that there were numerous parties, gatherings and the Prime Minister even took part in a festive quiz,” she said.

“It appears that Boris Johnson lied to the country and broke the law.

“It is increasingly clear that the Prime Minister presided over a culture of ignoring the rules that he told everyone else to follow. It’s time to fess up. 

“Boris Johnson and the Conservatives really believe it’s one rule for them, another for everyone else.”

Former shadow chancellor John McDonnell said on Twitter that Tory MPs “must either remove Johnson or eventually the electorate will remove them,” with fellow Socialist Campaign Group members Zarah Sultana and Nadia Whittome urging Mr Johnson to leave office.

Sir Keir Starmer, Labour leader and former head of the Crown Prosecution Service, said Mr Johnson appears to have broken the law, but again stopped short of calling for him to resign.

Sir Keir said it was very hard to see how the virtual quiz was compliant, calling the PM the “worst possible leader at the worst possible time.”

Green MP Caroline Lucas hit out at the Labour leader’s response, tweeting that it was a pity Sir Keir “won’t join others in calling on PM to resign.”

She went on: “It’s never been clearer that Boris Johnson is totally unfit to be PM — a threat to public health and serial liar, destroying democracy and degrading public life.”

The SNP, which has repeatedly called for the PM’s resignation, vowed to ensure Mr Johnson was held accountable for his misleading statements on Christmas parties.

The Prime Minister previously told Parliament that “there was no party” and that “all rules were followed.”

Support for Mr Johnson within his own party also appears to be waning, with claims a number of senior Tories, including Priti Patel, are considering a run at the top job.

On Sunday morning, the leader of the Scottish Conservatives, Douglas Ross, stuttered when asked why he supported Mr Johnson. 

Mr Ross said the latest images of his party’s leader had made him angry and when asked twice during an interview on BBC Scotland to list Mr Johnson’s attributes, he simply said that he was the Prime Minister. 

Cabinet minister Nadhim Zahawi defended the Prime Minister against suggestions of having flouted the regulations, telling Sky that the image showed Mr Johnson respecting the rules at the time. 

Mr Zahawi said that the picture would allow the public to “make their minds up” for themselves.

A Downing Street spokeswoman said it was a virtual quiz, with those who were in the office during the event attending remotely from their desks.