LONDON – British Prime Minister Keir Starmer is facing mounting pressure to step down this week after a bombshell revelation: senior Labour figure Peter Mandelson, his pick for UK ambassador to the United States who was later fired over deep ties to convicted sex offender Jeffrey Epstein, was originally denied formal security clearance for the sensitive diplomatic role. The Guardian first broke the story of the rejected vetting application, which senior officials later overruled to clear Mandelson’s path to Washington.
Downing Street confirmed Thursday that Starmer only learned of the Foreign Office’s override of the initial security vetting decision earlier this week, contradicting months of the prime minister’s public assertions that full, proper protocol was followed during Mandelson’s appointment process. Starmer, who appointed Mandelson to the coveted Washington post in late 2024, has maintained that the former Labour cabinet minister deliberately lied about the full scope of his connections to Epstein, who died in prison in 2019 while serving a sentence for child sex trafficking. A government spokesperson stated that once Starmer received the new information, he immediately ordered senior civil servants to launch a full inquiry into why the final developed security clearance was ultimately granted, with plans to update the House of Commons on findings in the coming days.
Opposition leaders have quickly seized on the revelation to demand Starmer’s resignation, arguing that his repeated claims of following proper vetting procedure amount to misleading Parliament and the British public. Kemi Badenoch, leader of the main opposition Conservative Party, told reporters Thursday that Starmer has now entered “definitely in resigning territory”, while Ed Davey, head of the centrist Liberal Democrats, echoed the call, saying Starmer “must go” if it is confirmed he misled the public and lawmakers. Multiple linked reports have also confirmed that Starmer was warned as early as the appointment process that naming Mandelson, a known close associate of Epstein, would carry severe “reputational risk” for his government.
The scandal marks the most severe test of Starmer’s premiership since February, when the U.S. Department of Justice released millions of pages of court documents tied to Epstein’s conviction, laying bare the full extent of Mandelson’s longstanding personal and professional ties to the disgraced financier. Among the most damaging disclosures from the so-called Epstein Files were 2009 emails showing Mandelson, who served in a previous Labour government, passed sensitive, potentially market-moving confidential government information to Epstein. Both Starmer and the Labour Party have faced widespread criticism for overlooking these red flags to appoint Mandelson, who was seen as a skilled trade negotiator capable of striking a favorable post-Brexit trade deal with the then-U.S. Trump administration. That gamble initially appeared to pay off, when the two countries finalized a bilateral trade agreement just months after Mandelson took office, but the scandal has since overshadowed that policy win.
Starmer has issued multiple public apologies to the British public and to Epstein’s trafficking victims, saying he regrets trusting what he now calls “Mandelson’s lies” about the extent of the relationship. Starmer fired Mandelson from the ambassador post in September 2025, after initial disclosures about his ongoing ties to Epstein emerged.
The controversy has also spawned a formal criminal investigation by British law enforcement. Officers executed search warrants at Mandelson’s two homes in London and western England earlier this year, and arrested him on February 23 on suspicion of misconduct in public office. He was released on bail the next morning after more than nine hours of questioning, and has repeatedly denied any wrongdoing, with no formal charges filed to date. Just days before Mandelson’s arrest, Prince Andrew, King Charles III’s younger brother and another close Epstein associate, was arrested on the same misconduct charge.
Parliament has recently forced the Starmer government to commit to releasing a full cache of additional documents tied to Mandelson’s appointment and vetting process, which officials have agreed to publish in the coming weeks. The unfolding scandal has thrown Starmer’s leadership into question just over a year into his premiership, with opposition parties already preparing to table a motion of no confidence if the prime minister refuses to launch an independent inquiry into the appointment process.