UK Prime Minister Keir Starmer is facing renewed political pressure after fresh allegations over Peter Mandelson’s appointment as Britain’s ambassador to the United States raised new questions about his judgment and leadership style. The controversy has undermined Starmer’s promise to restore competence and integrity to government after years of political turmoil.
The latest fallout centres on claims from former senior foreign ministry official Olly Robbins, who told a parliamentary committee that Downing Street pushed hard to accelerate Mandelson’s appointment. Starmer’s office has denied the allegation and said officials were monitoring the process rather than applying pressure.
Robbins said his office and the foreign secretary’s office faced constant pressure throughout January 2025, including frequent phone calls from Starmer’s private office. He also described himself as a scapegoat in the affair. His testimony has given Starmer’s critics fresh ammunition and intensified scrutiny of how Downing Street handled the appointment.
Sky's @BethRigby explains why there are serious questions being asked about Sir Keir Starmer’s judgement over the Peter Mandelson vetting scandal following the latest session of PMQs.
🔗 https://t.co/3Xb3wuaEIj pic.twitter.com/iFxi6LkALa
— Sky News (@SkyNews) April 22, 2026The controversy has revived broader concerns about Starmer’s leadership. According to people close to his Downing Street operation, he relied too heavily on a small circle of trusted advisers who acted as gatekeepers, leaving him politically exposed. Critics argue that the approach distanced him from both the Labour Party and the public.
Starmer appointed Mandelson in late 2024, praising his experience, but later dismissed him after emails exposed the extent of Mandelson’s ties to Jeffrey Epstein. Police arrested Mandelson in February on suspicion of misconduct in public office, although he has not been charged and does not face allegations of sexual misconduct. The report also says Starmer later revealed that a vetting body had advised against the appointment from the start.
The political damage extends beyond the appointment itself. Starmer has lost more than 10 advisers since taking office in July 2024, including two chiefs of staff and four communications directors. Although some allies now describe Downing Street as more functional than it was six months ago, critics inside Labour believe the changes may have come too late.
Starmer’s supporters insist he runs the government methodically and does not make decisions on impulse. But repeated policy reversals, including on welfare, have fed an opposing narrative that portrays him as politically weak. Some Labour lawmakers now question whether he still has enough authority inside the party to recover from the Mandelson saga.
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The pressure on Starmer is unlikely to ease soon. More documents related to Mandelson’s appointment are expected after the May 7 local and regional elections, where Labour is already forecast to suffer losses to Reform UK. With questions mounting over his judgment, Starmer now faces one of the most serious political tests of his premiership.
