Published by Global Banking & Finance Review®
Posted on April 16, 2026
3 min readLast updated: April 16, 2026
Add as preferred source on GooglePeter Mandelson failed his developed security vetting for the UK ambassador role to the US in January 2025—but Foreign Office officials overruled it, allowing his appointment despite warnings of reputational risk tied to his links with Jeffrey Epstein.
By Alistair Smout, Andrew MacAskill and Sam Tabahriti
LONDON, April 16 (Reuters) - Britain's former U.S. ambassador Peter Mandelson failed his security vetting before taking up the role, but Prime Minister Keir Starmer was unaware officials had overruled the recommendation, the government said on Thursday.
"Neither the Prime Minister, nor any government minister, was aware that Peter Mandelson was granted developed vetting against the advice of UK Security Vetting until earlier this week," a government spokesperson said in a statement.
The decision was taken by officials in the foreign ministry, the spokesperson added.
The disclosure of the vetting failure increases pressure on Starmer over his appointment of Mandelson, who is under police investigation for allegedly leaking government documents to the sex offender Jeffrey Epstein, and led to renewed calls for him to resign.
Starmer has apologised for the appointment but defended his own actions, accusing Mandelson of creating a "litany of deceit" about his Epstein ties and promising to release documents on how he was appointed.
MANDELSON FIRED IN SEPTEMBER
The Guardian newspaper had reported earlier on Thursday that the failed security check came after Mandelson's appointment had been announced. The government has previously pledged to overhaul the vetting process and "address weaknesses" in the system.
The report also said that officials were considering whether to withhold publication of the documents that would reveal Mandelson had not been given security clearance.
However, the government spokesperson said that once Starmer had been informed, he had instructed officials to establish why the clearance had been granted and to update parliament.
Mandelson has not commented publicly on allegations he leaked documents, and a lawyer for Mandelson did not provide a comment about the report.
Mandelson, 72, was fired from the most prestigious posting in Britain's diplomatic service in September, when the depth of his friendship with Epstein started to become clear.
His relationship with the convicted sex offender, who died in prison while awaiting trial in 2019 on sex trafficking charges, is at the centre of a British political scandal that has forced the resignation of two senior government officials.
OPPOSITION PARTIES SAY STARMER MISLED PARLIAMENT
The opposition leader Kemi Badenoch accused Starmer of misleading parliament when he said three times in September that "full due process" had been followed.
If Starmer was found to have knowingly misled parliament, he would have broken the code that governs ministers' behaviour and would be expected to resign.
"Keir Starmer said in February that the security services had given Mandelson 'clearance for the role'," said Nigel Farage, leader of the populist Reform UK Party which is leading polls. "Now we discover that he has blatantly lied, the prime minister should resign."
Mandelson was arrested in February on suspicion of misconduct in public office after Starmer's government passed on communications between the former ambassador and Epstein. He was later released on bail, pending further investigation.
Starmer faces further scrutiny as parliament is expected to release more documents related to his vetting.
Former Prime Minister Boris Johnson was forced to resign in 2022 in part because of months of embarrassing headlines about illicit parties held in government buildings during the COVID pandemic and accusations he misled parliament.
(Reporting by Alistair Smout, Andrew MacAskill and Sam Tabahriti; Editing by Alison Williams and Toby Chopra)
Peter Mandelson failed his security vetting due to concerns over his links to Jeffrey Epstein before taking up the ambassador role.
Yes, foreign ministry officials intervened and overruled the advice, allowing Mandelson to take up the ambassador post.
Keir Starmer has faced criticism for appointing Mandelson and for defending the decision, leading to renewed calls for his resignation.
Mandelson is under investigation for allegedly leaking government documents and for his friendship with convicted sex offender Jeffrey Epstein.
Mandelson and the government have made no immediate public comment about the failed security vetting report.
Explore more articles in the Headlines category
