British Prime Minister Keir Starmer is under growing political pressure as he confronts a deepening crisis surrounding the appointment of Peter Mandelson as the U.K.’s ambassador to Washington.

Starmer is expected to face intense scrutiny in Parliament after it emerged that Mandelson—who had prior associations with Jeffrey Epstein—was appointed despite reportedly failing security vetting checks. The revelation has triggered calls for Starmer’s resignation and raised concerns among allies about gaps in oversight.

The prime minister has defended the process, stating that “due process” was followed, but said he was “furious” upon learning that he had not been informed of the failed security clearance recommendation.

“The fact that I wasn’t told is astonishing,” Starmer said in an interview, adding that not being aware of the issue while assuring Parliament was “unforgivable.”

In response, Starmer dismissed Olly Robbins, the Foreign Office’s top civil servant, shortly after the issue became public. However, Robbins’ allies have argued that confidentiality rules may have prevented him from sharing sensitive vetting details with the prime minister. Robbins is expected to testify before a parliamentary committee.

Opposition leaders have seized on the controversy. Conservative leader Kemi Badenoch accused Starmer of misleading both Parliament and the public, while Liberal Democrat leader Ed Davey described the situation as a serious lapse in judgment.

Within Starmer’s own Labour Party, concerns are also growing, particularly as the government faces declining poll numbers ahead of upcoming local elections.

Mandelson, who served less than nine months in the role, was dismissed in September 2025 after allegations surfaced that he misrepresented the extent of his ties to Epstein. Additional scrutiny followed the release of U.S. Justice Department documents suggesting he may have shared sensitive government information with Epstein in 2009.

British authorities later opened a criminal investigation, and Mandelson was arrested in February on suspicion of misconduct in public office. He has denied wrongdoing and has not been formally charged.

The controversy adds to broader challenges facing Starmer’s government, including economic pressures and criticism over policy reversals, as he works to maintain political stability following Labour’s election victory in 2024.