Prime Minister Keir Starmer moved to remove Peter Mandelson as the United Kingdom’s ambassador to the United States this week after fresh disclosures about the peer’s relationship with the late convicted sex offender Jeffrey Epstein, prompting renewed scrutiny of the vetting process and the government’s handling of the matter.
Officials and insiders said ministers were aware last autumn of Mandelson’s past association with Epstein and that the Foreign Office specifically asked the peer about the relationship during vetting for the Washington post. Downing Street has argued the "depth and extent" of contacts revealed this week are materially different from what was known when the appointment was made.
The disclosures include emails and other material that, according to government officials, show a closer and more sustained correspondence between Mandelson and Epstein than previously reported. Among the new allegations is that Mandelson encouraged Epstein to challenge his conviction. Those developments, officials said, changed the calculus in Downing Street and prompted Mandelson’s departure.
Starmer publicly defended Mandelson in the House of Commons on Tuesday, saying the ambassador had "expressed his deep regret for his association with Epstein" and that he had confidence in him. Within about 24 hours the government announced Mandelson would leave the post. Government spokespeople and allies defended aspects of the original decision, saying Mandelson had been effective on trade and had built strong relationships in Washington.
Party insiders and friends of the peer said Starmer and his senior advisers, including his foreign affairs adviser Jonathan Powell and chief of staff Morgan McSweeney, weighed the risks before making the appointment. One source told the BBC that "the Epstein stuff in broad terms was definitely known and discussed in detail before his appointment." A friend of Mandelson said his success in the role — including trade work and access to the White House, and praise from figures such as former President George W. Bush — had been cited in support of the selection.
Opponents and commentators have questioned why the recent materials were not identified in vetting. A column in the Daily Mail argued that the episode exposed shortcomings in Starmer's political judgment and competence, and said the affair could have wider implications for his leadership. That piece described an "end-of-days mood" in the Commons and reported concerns that the controversy had become a test of confidence in the prime minister, citing the deputy Labour leadership contest as a proxy indicator of party sentiment. Those claims were opinion and commentary rather than official findings.
The appointment had already attracted scrutiny because public reports and images — including photographs of Mandelson with Epstein and press coverage showing contacts after Epstein’s conviction for sexual offences — were in the public domain before last year’s appointment. One government source said Mandelson was "clear about" his association when asked during vetting. Another Downing Street official said the newly disclosed emails showed a level of contact that had not previously been available to decision-makers.
Members of the Cabinet Office and figures involved in assessing the nomination had raised concerns about the Epstein relationship before the appointment, according to sources. Lord Glassman, who was asked to produce a report for Downing Street after meetings with advisers linked to the Trump administration, warned at the time that the Epstein connection could be problematic, one source said.
Mandelson’s defenders emphasised his performance in Washington. Allies noted diplomatic access, trade negotiation work and relationships with senior US figures as justifications for the choice. Critics countered that the ambassador’s past association with Epstein should have precluded such a sensitive posting.
After four decades in public life, several political figures said Mandelson’s career in frontline roles appeared likely to be over. The departure has also intensified questions about internal processes for vetting senior diplomatic appointments and how new materials are assessed once an appointment is under way.
Downing Street and the Foreign Office have said they will consider lessons from the affair. Officials are examining how the newly disclosed materials came to light and why they were not part of the original assessment. Labour MPs and several commentators said the episode would reverberate inside the party and could shape discussions about standards and judgment at the top of government.
The government has not published a full timeline of the vetting exchanges or the newly disclosed materials. Investigative reporting by media outlets had previously documented public encounters and correspondence between Mandelson and Epstein, and those reports were raised with government officials during the appointment process, sources said. The new materials, according to officials, include email exchanges that indicate a more sustained relationship than earlier reports suggested.
In public statements and commentary, views about the impact on the prime minister varied. Some Labour figures defended the decision to appoint Mandelson on the basis of his performance and relationships in Washington. Others said the episode raised legitimate questions about the prime minister’s judgment and the thoroughness of vetting for high-profile diplomatic roles.
The immediate result of the revelations was Mandelson’s exit from the ambassadorial post and intensified scrutiny of how Downing Street evaluated known risks. The episode is likely to prompt internal reviews and further questions in Parliament as MPs from across the political spectrum press for clarity about what was known, when it was known and how the government responded to the new disclosures.