Cross-party scrutiny intensifies over withheld Mandelson vetting documents

UK ministers are facing renewed cross-party pressure in parliament regarding the withholding of key documents related to Peter Mandelson’s appointment as ambassador to Washington. Despite the publication of a 1,500-page file on Monday, crucial materials were excluded at the request of the Metropolitan Police, citing the potential to prejudice an ongoing investigation. The withheld items include a summary of the vetting process which concluded with officials recommending that Mandelson not be granted security clearance.

The exclusion has drawn sharp criticism from MPs who note the absence of records detailing the security mitigations required to address risks identified by vetting officials. Sources indicate the vetting summary raised concerns regarding Mandelson’s links to China’s finance minister, Lan Fo’an, the sanctioned Russian oligarch Oleg Deripaska, and former Israeli military intelligence general Tamir Hayman. Emily Thornberry, Labour chair of the Commons foreign affairs committee, highlighted the lack of an aide memoire from Foreign Office security chief Ian Collard, who reviewed the file in September 2025 after Mandelson’s previous dismissal.

Thornberry questioned how the government intended to bridge the security gap identified by officials, noting she could not find any documentation outlining mitigations. She suggested that Prime Minister Keir Starmer had effectively subcontracted the appointment decision, arguing that the prime minister delegated authority without sufficient oversight. Thornberry stated that the criticism levelled at Starmer was that he did not watch what was going on, essentially giving power to others who then abused it.

Further omissions include Mandelson’s declaration of interest form, alongside photos, videos, voice memos, and documents attached to official emails. Alex Burghart, speaking for the Conservative frontbench, demanded clarity on these missing attachments, suggesting they may have accidentally fallen out of the full disclosure. Members of the intelligence and security committee noted that a parliamentary motion required the release of all relevant papers, raising questions about the completeness of the government’s response.

The debate also featured an intervention from former justice minister Alex Davies-Jones, who read a statement from Jeffrey Epstein survivor Lisa Phillips. Phillips expressed confusion over Starmer’s appointment of Mandelson given the former diplomat’s publicly known association with Epstein, questioning whether lessons from the scandal had been learned. Davies-Jones noted that Phillips had repeatedly requested a meeting with the prime minister, which had been ignored, prompting calls for government accountability regarding the appointment’s ethical implications.