Full Breakdown
Mandelson Files Reveal Internal Criticism and Vetting Concerns Over UK Ambassador Appointment
6/2/2026, 12:41:35 AM
The Appointment and Document Release
In June 2024 the UK government published a second tranche of material concerning Peter Mandelson’s appointment as ambassador to the United States. The dump comprises roughly 1,500 pages of private WhatsApp messages, emails and security-vetting correspondence involving Mandelson, senior Labour ministers, civil servants and advisers. It follows an earlier March release and is the largest post-Chilcot disclosure to Parliament.
Background and Prior Controversies
Mandelson, a former Labour cabinet minister, was twice dismissed from cabinet under Tony Blair and was removed from his ambassadorial post in September 2024 after links to convicted sex offender Jeffrey Epstein emerged. Earlier releases highlighted concerns about his ties to Epstein and his support for closer relations with China. The current batch adds evidence of internal dissent and questions about the security-vetting process that cleared him for the role.
Key Players
- Peter Mandelson – former Labour peer, appointed US ambassador.
- Keir Starmer – Prime Minister, whose leadership is under scrutiny.
- Pat McFadden – Chancellor of the Duchy of Lancaster (later Work and Pensions Secretary).
- David Lammy – then-Foreign Secretary, recipient of Mandelson’s handwritten note.
- Olly Robbins – former senior foreign-office official referenced in a red-box gift email.
- Wes Streeting – former health secretary, whose Israel-related message was called “hysterical.”
- Morgan McSweeney – former chief of staff to Starmer, recipient of Mandelson’s “Thick of It” email.
- Darren Jones – Prime Minister’s chief of staff, commenting on the missing file.
- Metropolitan Police – flagged a security-vetting file as potentially compromising an investigation.
Timeline of Key Events
- 18 Nov 2024 – Mandelson writes to Lammy promising “you will never regret” his appointment.
- 31 Mar 2025 – Government requests Mandelson’s phone data; he declines.
- 1 Jan 2025 – Security-vetting team asks Mandelson for details on foreign contacts.
- 2 May 2025 – McFadden seeks advice from Mandelson after local-election losses.
- 24 Jun 2025 – McFadden describes a “very bad” Labour revolt over benefit reforms.
- 28 Aug 2025 – Mandelson emails McSweeney about the red-box gift to President Donald Trump, likening the saga to *The Thick of It*.
- Sept 2025 – Starmer announces UK recognition of a Palestinian state.
- June 2024 – Second tranche of documents released to Parliament.
Data and Scope of the Release
The batch contains 1,500 pages of communications, including a 120-member Labour dissent on benefit reforms and multiple messages referencing the red-box gift to President Trump. The documents also reveal advice to provide a “handful of names” to the vetting team, described as “artificial” by a senior Foreign Office official.
Official Statements and Government Response
Prime Minister’s chief of staff Darren Jones confirmed that the omitted security-vetting file has been shared with the Intelligence and Security Committee and will be published when permissible. A spokesperson for Pat McFadden said the minister complied fully with the Humble Address and has urged Mandelson to apologise to victims. Mandelson’s legal representatives maintain he denies any wrongdoing and is cooperating with police investigations.
Criticism Within Labour
Mandelson’s messages repeatedly described Starmer as lacking “verve” and “not leading from the front.” He also characterized Gordon Brown as having “it in for Keir…big time” and labelled Angela Rayner an “instrument of destabilisation.” McFadden complained that Starmer “destroyed” his own authority by diluting benefit reforms, describing the situation as “very bad” amid a 120-member revolt.
Security Vetting Discrepancies
During the vetting process Mandelson asked whether officials required “literally every foreign national I have ever met?” and was advised to submit a limited list of contacts, even if the information was “quite artificial.” The Metropolitan Police warned that a key vetting file could jeopardise an ongoing investigation, leading to its exclusion from the public release.
Conflicting Reports and Missing Files
The released set omits a security-vetting document flagged by police, creating a gap in the public record. While officials assert the file will be published later, its current absence prevents full assessment of Mandelson’s foreign contacts.
Implications for UK Politics
The disclosures intensify pressure on Starmer, who faces a potential leadership challenge from Greater Manchester Mayor Andy Burnham if the latter secures a parliamentary seat in the June 2026 election. The controversy also raises questions about the robustness of diplomatic appointments and the handling of security clearances.
Verbatim Quotes
- “I just wanted you to know that if you were minded to appoint me I would make sure you never regret it.” — Peter Mandelson, handwritten note to David Lammy.
- “Keir is not leading from the front” — Peter Mandelson, WhatsApp message to Pat McFadden.
- “This is like something out of Thick of it.” — Peter Mandelson, email to Morgan McSweeney.
- “I have spoken to Morgan a lot this week and last night I was direct with him – Keir is not leading from the front and Morgan is not organising the centre as it needs to be Gordon has it in for Keir (and Rachel) big time.” — Peter Mandelson, WhatsApp message to Pat McFadden.
- “Do you mean literally every foreign national I have ever met? I assume not. Could you be a bit more specific about what sort of person, how far back, who I have done more than meet?” — Peter Mandelson, email to security-vetting team.
- “That will reassure the vetting team that you’ve been comprehensive,” the Foreign Office official told Mandelson, “even if it’s all quite artificial”.” — Head of US Global Issues and Canada Team, Foreign Office.
What Comes Next
The Metropolitan Police investigation into alleged misconduct continues, and Mandelson remains under police scrutiny. The Intelligence and Security Committee is expected to review the withheld vetting file before publication. Concurrently, Labour’s internal dynamics will be tested in the upcoming leadership contest, with Starmer’s handling of the Mandelson affair likely a focal point.
