Questions on Abba Party No. 10 Sue Gray did not investigate the cover-up claims

Sources told the Mirror last year that attendees at the 13 November 2020 lockdown bash were “all absolutely guzzled” to celebrate the departure of bitter rival Dominic Cummings.

Tory MPs fear a cover-up of the ‘Abba party’ at the Downing Street flat after Sue Gray admitted she had not fully investigated the gathering.

Her long-awaited report on the Partygate scandal admitted her information on the event was “limited” as she stopped when the police investigation began.

After Scotland Yard concluded its inquiry last week, it ruled that it was “not appropriate or proportionate” to continue monitoring the event.

Boris Johnson’s wife Carrie is set to perform the Abba song “Winner Takes It All” at the event at the flat on November 13, 2020.

Sources told the Mirror last year that attendees were “all absolutely guzzled” to celebrate the departure of bitter rival Dominic Cummings.

The claims were previously denied by Ms Johnson’s spokeswoman.

But Tory MPs questioned why Ms Gray had not fully investigated the gathering, suggesting “it looks like a cover-up”.

Another said: “It took place at his flat so was possibly the most damaging thing so I just can’t understand why she didn’t deal with it properly.”

Labor MP Chris Bryant, chairman of the Commons Standards Committee, said he was “puzzling” why the event had not been investigated further.

The SNP’s Joanna Cherry also said she was “confused” by the failure to investigate and asked the Prime Minister to reassure her that Met police “were not nibbled”.

Mr Johnson told her to “take a closer look” at the report because “I think she will find the answer she needs”.

Speaking at his Downing Street press conference, the Prime Minister told the Mirror that Ms Gray had previously indicated that the official flat was “dual use”.

He added: “In the past prime ministers have used it for meetings.

“The event in question was a work meeting and the Metropolitan Police investigated it and that was certainly the result of their investigation.”

Ms Gray confirmed Ms Johnson and five special advisers were at the flat following the departure of the Prime Minister’s former top adviser.

She said the Prime Minister joined them a few hours later and that “food and alcohol” were available at the event, which later went on into the evening.

In her report, Ms Gray said: “The information gathered at this gathering is limited as the evidence-gathering process had only just begun when the Metropolitan Police announced their own investigation, which included events on 13 November 2020.

“At that point I dropped my investigation to avoid any interference with the police investigation.

“Following the announcement by the Metropolitan Police on May 19, 2022, I have considered whether or not to investigate this incident further, but have concluded that it is not appropriate or proportionate to do so.”

The pair escaped fines for the gathering, which was under investigation by Scotland Yard, although it was unclear if other attendees did.

Ms Johnson, who sought legal advice before submitting her questionnaire, is said to have told police the gathering was a work event.

It is believed that the Prime Minister claimed he was interviewing a close friend of his wife, Henry Newman, for a job in another part of the official residence.

An insider said: “Why did he have to interview him at the flat when he could have done it downstairs? It makes no sense.”