Published by Global Banking & Finance Review®
Posted on April 17, 2026
4 min readLast updated: April 17, 2026
Add as preferred source on GooglePrime Minister Keir Starmer is under mounting pressure to resign after it emerged that Peter Mandelson failed security vetting yet was still appointed ambassador to the U.S.; Starmer says he was unaware of the vetting failure and will update Parliament.
By Elizabeth Piper, Andrew MacAskill and William James
LONDON, April 17 (Reuters) - Prime Minister Keir Starmer, under renewed pressure to resign, expressed anger on Friday over not being informed that his former ambassador to the United States, Peter Mandelson, had failed security vetting before being handed the job.
Starmer, who won the largest majority in modern history for Labour at a national election in 2024, is facing fresh calls to step down over the Mandelson affair, just three weeks before his party is expected to suffer big losses in local elections in England and regional votes in Scotland and Wales.
Following the sacking of Labour veteran Mandelson as ambassador last year over his ties to the late sex offender Jeffrey Epstein, Starmer had won a brief reprieve from his critics after limiting Britain's role in the Iran war.
However, on Thursday it emerged that Mandelson had failed the security vetting conducted before his appointment as envoy, a fact that Starmer's team said the prime minister had been unaware of. Starmer's political foes have questioned how a prime minister could not know and have demanded his resignation.
STARMER SAYS IT WAS UNFORGIVABLE HE WAS NOT INFORMED
Starmer, who was in France on Friday for talks on the Iran crisis, told reporters it was unforgivable that he had not been told about Mandelson having failed security vetting "when I was telling parliament that due process had been followed".
Starmer said he would "set out the relevant facts" on Monday to parliament.
A spokesperson for Starmer told reporters the prime minister had no plans to resign.
Downing Street moved swiftly late on Thursday to try to quash the scandal, sacking the Foreign Office's top official, Olly Robbins. Friends of Robbins were reported by Sky News on Friday as saying the rules of the vetting procedure meant he could not pass on the concerns raised to Starmer or disclose what else had been considered when granting approval.
Yet Starmer's team's argument that he did not know until this week key information surrounding an appointment he had promoted in 2024 as a stroke of genius has sparked doubts over whether the prime minister has a proper grip on his government.
One Labour lawmaker, speaking on condition of anonymity, said the party was unlikely to try to remove Starmer for now but that the Mandelson saga was "a gift that keeps on giving" and would ensure the premier remained under scrutiny before an expected drubbing in the local elections on May 7.
Another Labour lawmaker said David Lammy, Britain's deputy prime minister who served as foreign secretary at the time, should quit. "The choice is incompetence over deceit," the lawmaker added.
Starmer's spokesperson said no minister and no one in the prime minister's office had known about the vetting failure.
George Foulkes, a Labour member of the House of Lords, Britain's upper chamber of parliament, urged caution, saying it would be reckless to move against Starmer.
"We need to keep things in perspective when there are so many issues he has been dealing with well," he told Reuters.
Starmer could be challenged if 20% of Labour members of parliament support a rival candidate to replace him. That means such a candidate would need the backing of 81 lawmakers.
DID STARMER MISLEAD PARLIAMENT?
The point of contention for opposition politicians is whether Starmer knowingly misled parliament when he reassured lawmakers that Mandelson had completed security vetting when he was appointed and that no red flags had been raised.
A letter from the Foreign Office in January last year offering Mandelson the job as ambassador, and released by parliament last month, suggested that he had passed the security vetting.
Mandelson was sacked in September when the extent of his ties with Epstein was revealed in documents published in the United States.
He is now under police investigation on suspicion of leaking government documents to Epstein but has not commented publicly on the allegations. A lawyer for Mandelson did not provide a comment on Thursday about the vetting process.
Starmer has apologised for appointing Mandelson, accusing him of creating a "litany of deceit" about his ties to Epstein.
Kemi Badenoch, leader of the opposition Conservative Party, described Starmer's defence as "preposterous" and Nigel Farage, the leader of Labour's main electoral challenger, the populist Reform UK party, said it was "blatant dishonesty".
(Reporting by Elizabeth Piper, Andrew MacAskill and Sarah Young; additional reporting by William James, Paul Sandle and Alistair Smout, Writing by Elizabeth Piper; Editing by Gareth Jones)
Starmer is facing calls to resign after it was revealed his former US ambassador, Mandelson, failed security vetting, but still took the job.
The row centers on Mandelson’s appointment despite failing security clearance, and his alleged ties to Jeffrey Epstein.
The government stated that Starmer was unaware officials overruled the vetting recommendation and promised to release appointment documents.
Ollie Robbins was the senior official at the UK foreign ministry who will leave his role after losing Starmer's confidence over the incident.
Yes, Mandelson is under police investigation for allegedly leaking government documents to Jeffrey Epstein.
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