Boris Johnson's Partygate response to police won't be made public, Downing Street has said.
The Prime Minister received a questionnaire on Friday from officers investigating rule-breaking parties in Downing Street and Whitehall - six of which the PM is believed to have attended.
No 10 said Mr Johnson's response to police would not be published.
Scotland Yard is investigating 12 lockdown-flouting gatherings during the pandemic, including a BYOB party in the Downing Street garden and a gathering in the PM's No11 flat.
Police are also reviewing whether to investigate a Christmas quiz in Downing Street after the Mirror published a bombshell picture of the PM and staff with an open bottle of bubbly.
More than 50 people are being sent questionnaires by the Metropolitan Police for its probe.
Asked if he had filled in his questionnaire, Mr Johnson told reporters on a visit to Scotland: "All that process has got to be completed before I can say anything more, but I look forward to telling you a lot more in due course."
But the PM's official spokesman said: "As we said on Friday, we will respond as required.
"As you know, I think the Met made clear that that was in seven days, so we will comply with that requirement."
Asked if the responses would be made public, the spokesman said: "No."
Downing Street has previously said it will confirm if the Prime Minister is fined by police.
Mr Johnson will use a private lawyer to mount his defence against claims he broke his own Covid rules at a string of gatherings.
The PM already admitted to attending a BYOB bash in the Downing Street garden in May 2020 and a surprise birthday gathering in the Cabinet room in June 2020 - both of which are being looked at by police.
Mr Johnson has claimed he thought the garden party was a work event.
He is also believed to have attended three separate leaving drinks and a gathering in his own flat in November 2020 - the night his former aide Dominic Cummings dramatically quit.
The Mirror previously reported that loud music could be heard blaring from the flat at the event, which has since been branded the "Abba party" after reports guests blasted out the song "The Winner Takes it All".
Mr Johnson will reportedly argue he attended several events as part of the working day.
“Saying goodbye to staff is part of working life,” a source told the Times.
Mr Johnson is apparently expected to argue that he was surprised by the birthday gathering and that he was working in his flat on the night of the November 2020 party.
Some 15 Tory MPs have publicly called for Mr Johnson to quit over the Partygate saga while others are believed to be waiting to see if the PM receives a fixed penalty notice from the police.
Top civil servant Sue Gray has put her probe into the row on ice while the police investigation is ongoing.
