More than 1,000 pages of documents relating to Lord Mandelson's appointment as the UK's ambassador to the US have been published
We're going through the files and messages now and will bring you the key lines shortly
Keir Starmer's spokesman says "every government department" was involved in going through thousands of documents and the release will provide "unprecedented" transparency
The PM appointed Mandelson to the role in December 2024, but sacked him nine months later after new details about his relationship with the late sex offender Jeffrey Epstein emerged - how we got here
Earlier this year, MPs passed a binding vote to ensure the files would be published - the first release in March showed Starmer was warned Mandelson's relationship with Epstein posed a "general reputation risk"
Mandelson is under criminal investigation over allegations of misconduct in public office and has repeatedly let it be known that he believes he has not acted criminally, did not act for personal gain and is co-operating with police
The government has released three volumes each made up of hundreds of pages relating to Lord Mandelson.
The first volume is made up of 598 pages, while the second has 554 pages and the third has 352 pages.
The documents include a mixture of WhatsApp messages, emails and hard-copy files, and they include exchanges between politicians.
The latest batch of files relating to Lord Mandelson's appointment as the UK's ambassador to the US has just been released.
We're combing through the documents now, and will bring you the key lines shortly. Stay with us.
In February, MPs approved the release of documents about Lord Mandelson’s appointment.
Prime Minister Keir Starmer initially insisted he would not publish anything that could damage national security or diplomatic relations.
But this position unravelled when senior Labour figures - including former deputy PM Angela Rayner - urged ministers to change course.
The government ultimately agreed to involve a cross-party parliamentary committee in the process - the Intelligence and Security Committee (ISC). Sensitive documents have been referred to the ISC to decide what can and cannot be published.
The first tranche of documents was published in March.
Image source, PA MediaThe first set of documents relating to the appointment of Lord Mandelson as theUK's ambassador to the US focused on the process of hiring and later firing the peer.
Ahead of today's expected release of a new tranche of files, we've taken a look back at the key takeaways from those documents:
"Reputational risk": Keir Starmer was advised that Mandelson's relationship with convicted sex offender Jeffrey Epstein posed a "general reputational risk" before his appointment as ambassador.
"Weirdly rushed": The prime minister's national security adviser, Jonathan Powell, had said in a "fact-finding call" he found the appointment of Lord Mandelson "weirdly rushed".
Severance package: The files suggested Mandelson requested a severance payment of £547,201 after he was sacked. The BBC understands he takes issue with this claim and insists he made it very clear he had no intention of taking his case to an employment tribunal. The Treasury ultimately agreed a payment of £75,000.
Chris Mason and Henry Zeffman
Political editor and chief political correspondent
Image source, PA MediaThe appointment of Peter Mandelson as the UK's ambassador to Washington is like a bad news boomerang for the government.
Over and over again the prime minister's most consequential judgement in office circles back into ministers' airspace – and today it will do so with gusto.
It will be "another one of those weeks" one senior figure said, wearily.
The scale of what is to come will be quite something: the largest government publication ever put before the Commons, and therefore us, other than the Chilcot Inquiry into the Iraq War – and that was a 12 volume, 2.6 million word affair.
It won't be on that scale, but it will run to over 1,000 pages. The first tranche, back in March, amounted to 147 pages.
Printed and bound, the publication will be made up of three volumes. More than 160 of the pages are made up of Lord Mandelson's text messages and WhatsApps.
In big picture terms, the documents will offer a fascinating internal insight, at scale, into how government works: the private interactions, information flows and disagreements.
Image source, PA MediaOn 20 December 2024, Keir Starmer announced he would be appointing Peter Mandelson as the UK's ambassador to the US, saying he would bring "unrivalled experience to the role".
A specialist agency within the Cabinet Office then began the vetting process. It recommended Developed Vetting clearance be denied, but Mandelson was granted clearance by Foreign Office officials to become ambassador.
Here's a quick glance at what has unfolded since:
Joe Pike
Political correspondent
Today's release of more than 1,000 pages of government documents is among the largest ever laid in Parliament.
Senior government sources have conceded the files will include details of text exchanges between ministers, advisers and Lord Mandelson which are embarrassing and cringeworthy.
We can expect to read details of the discussions around Mandelson's appointment as US ambassador, as well as an insight into his time as the UK’s man in Washington.
The document dump will contain emails, briefings and memos, as well as pages of messages on what seems to be the government’s preferred communications platform: WhatsApp.
Mandelson’s vetting file will not be included - it’s understood the Metropolitan Police have asked for it to be held back while they investigate him on suspicion of misconduct in public office. Mandelson has denied wrongdoing.
Other disclosures will be redacted on grounds of national security or international relations, such as private messages which could be critical of US President Donald Trump.
Iain Watson
Political correspondent
A little earlier, Downing Street said the second tranche of the so-called Mandelson files will be released around 14:30 BST.
Chief Secretary to the Prime Minister Darren Jones will be speaking in the Commons an hour later.
The PM's official spokesman says "every government department" was involved in meeting the terms of the humble address - the demand from Parliament to see documents related to Lord Mandelson’s appointment and time as the UK's ambassador to the US.
This is "the largest ever response to a humble address", the spokesman adds, which he says will provide "unprecedented" government transparency.
It has involved the discovery, assessment and analysis of "thousands of documents" and material of a party political nature will be included "in the interests of maximum transparency".
He also says there will be a clear explanation of how documents were gathered and any redactions made.
Some documents held back at the request of the police will be made available at a later date but the timing is not in the government’s hands.
Asked about disappearing messages in WhatsApp chats, he said there is a review of corporate communications channels.
The spokesman also says, when asked if a response is expected from Keir Starmer, that the PM has no "public facing commitments" today.
Image source, PA MediaA second set of documents relating to Peter Mandelson's appointment as the UK's ambassador to the US will be released today.
A government spokesperson says the release will provide "unprecedented government transparency". It will be made up of three volumes, running over 1,000 pages. More than 160 of those will include Lord Mandelson's text messages and WhatsApps.
Mandelson was sacked as ambassador in September 2025 after fresh revelations emerged about the extent of his relationship with the late convicted sex offender Jeffrey Epstein.
Back in February, MPs voted to force the government to publish all papers relating to his appointment through a humble address - a parliamentary mechanism used to force the government to disclose certain information.
The first tranche of documents, published in March, showed PM Keir Starmer was advised that Mandelson's relationship with Epstein posed a "general reputational risk".
Our team of writers and correspondents will bring you the latest developments and analysis over the next few hours - stick with us.
