Prime Minister Boris Johnson is expected to give a statement to Parliament today with the long-awaited Sue Gray report due to be published - but with key parts left out.
It is understood that a redacted version of the top civil servant's report looking at Downing Street lockdown breaches during the pandemic will be released later today.
But the report will be stripped of key details after the Met Police launched an investigation into around eight of the lockdown gatherings, and asked Ms Gray to make only "minimal reference" to them in her report.
Read more: Major covid rule change comes into force today
The Mirror reported that Ms Gray had still not sent her report to Downing Street as of 10am today and there is still a slim chance it could be delayed again.
The Prime Minister is expected to apologise to the Commons again and tell them that he accepts her redacted findings in full.
Sources said he was planning to tell MPs that the Government will "learn the lessons" of the row before announcing changes to his top team in No10.
Mr Johnson is also set to speak to Tory MPs and members of his Cabinet today to shore up support.
Whitehall enforcer Ms Gray took over running the inquiry at the end of last year after Cabinet Secretary Simon Case was sacked when allegations emerged of a party in his department.
Police are also investigating "a number of events" in Downing Street and Whitehall during the pandemic after Ms Gray handed over evidence to Scotland Yard.
The force previously resisted calls to probe allegations of Covid rule-breaking bashes, which were first reported by the Mirror in November.
Metropolitan Police Commissioner Dame Cressida Dick delivered the bombshell U-turn last Tuesday, making Mr Johnson the first PM to face the threat of being interviewed under police caution.
Downing Street said Boris Johnson was willing to cooperate with the police if necessary and Ms Gray handed a dossier of evidence to Scotland Yard on Friday.
Asked if the PM would submit himself to questioning, the PM's official spokesman said: "Anyone who is required to would be expected to cooperate in any way they are asked to."
But police later said any punishments they dish out are likely to be limited to fixed penalty notices, which are not a criminal conviction.
On a visit to the port in Tilbury, Essex, this morning, the Prime Minister refused to say if the imminent report would be a “whitewash".
He added: “Of course I stick absolutely to what I’ve said in the past”.
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