FILE - In this file photo dated Thursday, May 7, 2020, Britain's Foreign Secretary Dominic Raab arrives at 10 Downing Street, in London.
The papers were believed to have appeared online some months earlier but attracted little attention until they were picked up by the Labour campaign.
It was unable to publish the report since it was compiled last year after Conservative Prime Minister Boris Johnson refused to clear it for release ahead of the December election.
The decision to publish the report comes a day after the new committee for this current parliamentary term was formed.
The job had been expected to go to a former minister, Chris Grayling, who is a loyal supporter of Johnson.