Senior civil servant Sue Gray has delivered her completed report into Downing Street lockdown parties to the prime minister.
The final report - which is 37 pages long plus photos - had been delayed by the Met police inquiry that ended last week.
An interim version, released in January, criticised leadership within No 10.
It added that some events in government offices should not have taken place.
The government has confirmed Prime Minister Boris Johnson will give a statement to the Commons later.
He is currently reading a print out of the report, as he prepares to face Labour leader Sir Keir Starmer at PMQs at 12.30 BST.