Peter Mandelson, Britain’s ambassador to Washington, is facing intensified calls to resign after the release of messages and photographs that show a close friendship with convicted sex offender Jeffrey Epstein.

The images, which U.S. politicians made public, include shots of Mandelson on Epstein’s Caribbean island in about 2002 and a photograph of him wearing a white dressing gown. The messages reportedly include a birthday note in which Mandelson described Epstein as "my best pal." The revelations come about a week before a state visit to the United Kingdom by U.S. President Donald Trump, for which Mandelson has been playing a central role in preparations.

Downing Street and a number of Cabinet ministers have so far declined to say the disclosures undermine Mandelson’s position, while critics and some opposition figures have questioned whether he can remain effective as the UK’s representative in Washington. The published material has prompted renewed scrutiny of Mandelson’s judgment and of the British government’s judgment in appointing him to the post.

Mandelson acknowledged the material was troubling. "It was very embarrassing to see and to read," he said in comments reported by British media, and added that more "very embarrassing" details about the friendship could emerge. He also said he had seen "a different side" to Epstein "because I'm a gay man," comments that prompted further public debate.

Reports in British tabloids have highlighted additional material tied to Epstein, including references to a so-called "birthday book" that purportedly contains messages from a variety of public figures. Other media reports have cited claims that Epstein "brokered a deal" involving Mandelson related to the sale of a government-owned banking asset after Epstein’s earlier conviction for sex offences; those claims have been presented as allegations in news accounts, rather than established fact.

Jeffrey Epstein was convicted in the early 2000s on charges related to sex offences and later faced federal charges in the United States. He died in 2019 while in federal custody. Victims and prosecutors have described Epstein’s Caribbean property, Little Saint James, as a site where sexual abuse took place; one survivor described it in court filings and interviews as an "orgy island," a characterization that has been repeated in media coverage.

The release of the photographs and messages prompted immediate reaction in both Britain and the United States. Some lawmakers and campaigners called for Mandelson to be removed from his diplomatic post, citing the seriousness of Epstein’s crimes and the perceived impropriety of close ties to him. Supporters of Mandelson and some officials have urged restraint pending fuller information and emphasized the need to distinguish personal acquaintance from wrongdoing.

Mandelson, a Labour peer and former EU trade commissioner and member of several British cabinets, was appointed to the ambassadorship in 2024. His role in hosting and coordinating during the upcoming state visit by President Trump has made the timing of the disclosures especially sensitive for the government.

British and U.S. officials have not disclosed the full provenance of the published images and messages. Journalists and investigators continue to review the material and seek comment from involved parties. The unfolding revelations are likely to shape public debate in the United Kingdom over ministerial appointments, diplomatic representation and the standards expected of senior officials whose past associations attract scrutiny.