Mandelson latest: Second tranche of papers to be released today will include messages between Labour peer and ministers

Last month the committee expressed concern that the Government had applied redactions “too broadly” and cited the UKSV review file as an example of documents where Parliament had not given ministers “power” to do so.

The Conservatives accused the Government of attempting a “cover-up” after shadow minister Alex Burghart wrote to the Prime Minister’s chief secretary on Sunday demanding “full transparency”.

Mr Burghart said: “I will remind you that the House has not given the Government the option of making corrections beyond the narrow scope of its modest speech.

“This behavior will be seen as disrespectful of Parliament by the House of Representatives and as a cover-up by the British public.

“Even if the prime minister leaves office in a few weeks, I can assure you that we will hold him accountable.”

Reports suggest the documents will not include Lord Mandelson’s UK Security Review (UKSV) summary, after the Metropolitan Police asked the Government to withhold the document to avoid jeopardizing its investigation into allegations of alleged misconduct by peers in public office.

UKSV recommended that Lord Mandelson not be given security clearance, but the senior Foreign Office official, Sir Olly Robbins, rejected the advice.

Sir Olly was effectively sacked in April after it emerged he had rejected the advice, with the Prime Minister insisting he was unaware of UKSV’s advice.

The government said it was only keeping the documents requested by the police, all other documents would be released.

Additionally, various documents were redacted to remove personal details such as the names of junior officials or for national security reasons.

Hundreds of documents relating to Lord Peter’s appointment mandelson It is expected to be released this week as the US ambassador.

Said to be the second largest publication of the House of Commons in history, it is the second tranche of documents relating to peer appointment.

MPs voted in February to demand ministers release a wide range of documents related to the appointment using an old parliamentary procedure known as “humble speech”.

The vote follows concerns about the launch of a police investigation into Lord Mandelson and the review process surrounding his appointment.

The first tranche of documents released in March showed Sir Keir Starmer had been warned of “public reputation risk” due to Lord Mandelson’s link to late pedophile financier Jeffrey Epstein.

The second set of documents is expected to include messages between Lord Mandelson and ministers and Government advisers, including Sir Keir’s former private secretary Morgan McSweeney.