The trove of government documents on Peter Mandelson’s appointment as Britain’s ambassador to Washington contains no record of any steps taken to manage the serious national security concerns raised about him, according to the Guardian — an absence that directly challenges assurances ministers and officials gave to MPs.
The newspaper reported that multiple sources briefed on the papers, which run to more than 1,000 pages and are due to be published on Monday, found no written evidence that security mitigations were agreed. One source who had seen the contents put the central problem bluntly, telling the Guardian the obvious question was why there was no written record of mitigations and no document showing that Mandelson had accepted them, when MPs had been told such measures existed.
A distinction appears to run through the files. Sources said Mandelson had been asked to provide assurances over potential commercial conflicts of interest, chiefly arising from his stake in Global Counsel, the lobbying firm he co-founded, but that there was no comparable record on questions of national security. Those commercial steps, the former Foreign Office permanent secretary Olly Robbins told the foreign affairs select committee, were not strictly a national security matter and were aimed largely at protecting Mandelson’s reputation, and that of the government, against any perception he was favouring the firm or its clients.
The gap matters because senior officials had given the committee explicit assurances that security mitigations were in place. Robbins told MPs in April that clearance could be granted if the highest-concern risks identified by UK Security Vetting could be managed or mitigated, and said those mitigations had been recorded in an email from the Foreign Office’s head of security, Ian Collard, setting out how Mandelson’s clearance would be managed. His account was echoed by Cat Little, the senior official responsible for gathering the documents, who said she had seen an email setting out the decision to grant developed vetting and some mitigations. Collard, in a letter sent on his behalf by the Foreign Office, told MPs he had sent an email recording the fact of the decision and the mitigations, though not the underlying reasons.
According to the sources, however, whatever emails were sent, none amounted to a formal agreement with Mandelson himself — suggesting that any security mitigations, if they existed, were settled informally between him and security officials rather than documented.
That the concerns could be managed at all has been questioned at the most senior level. The Guardian reported last week that Mandelson’s associations with senior figures in China, Russia and Israel were among the red flags raised by the vetting agency when it concluded he should be denied clearance, a recommendation the Foreign Office overruled. A former head of MI6 told the paper that the breadth of those risks would have made meaningful mitigation impossible.
Monday’s release also threatens to be politically uncomfortable in other respects. Ministers are braced for the publication of awkward exchanges from Mandelson’s time in Washington, including criticism of Sir Keir Starmer, at a moment when a number of Labour MPs are openly calling for the prime minister to step down. Government insiders said they expected WhatsApp messages from ministers attempting to impress the former ambassador to feature, but did not anticipate any resignations as a result. Among the material could be group exchanges involving Wes Streeting, the former health secretary who quit over Starmer’s leadership and who released his own messages with Mandelson in February. Other exchanges are said to show Mandelson, twice sacked from cabinet under the previous Labour government, offering unsolicited advice on policy areas well beyond his diplomatic remit.
Not everything will be published. Some documents are being withheld because they could be relevant to a future prosecution by the Metropolitan Police, while others have been redacted on security and data privacy grounds. The released papers are understood not to include a nine-page summary compiled by UK Security Vetting, after Scotland Yard asked that certain material be kept private.
A government spokesperson said the second tranche would be among the largest publications ever laid before parliament, describing it as a reflection of the transparent and thorough process followed in line with precedent for humble addresses — the parliamentary mechanism, used by the Conservatives, that forced the disclosure of papers that would otherwise have remained confidential. Mandelson declined to comment.
The publication caps a turbulent period for the prime minister. Mandelson was appointed in December 2024 and sacked the following September, after documents published in the United States revealed the depth of his friendship with the late financier and convicted sex offender Jeffrey Epstein. The fallout has since claimed Starmer’s chief of staff, Morgan McSweeney, who had pushed for the appointment, and Robbins, the Foreign Office’s most senior official. It also lands days after a sharply critical essay by Tony Blair, who argued that the government had drifted from the centre ground and was endangering Labour’s future. aol
The papers being released this week are expected to set out further detail on the security assessments carried out before the appointment and on Mandelson’s contacts with senior ministers — but it is the missing record of any security mitigations that is likely to draw the closest scrutiny from the MPs who were assured those measures had been taken.
