I made 'serious mistake' advising Starmer to appoint Mandelson, PM's ex-top adviser says

I made 'serious mistake' advising Starmer to appoint Mandelson, PM's ex-top adviser says2 hours agoShareSaveAdd as preferred on GoogleBecky MortonPolitical reporter"Like a knife through my soul"; Morgan McSweeney on learning extent of Mandelson/Epstein relationshipThe PM's former chief of staff has said he made "a serious mistake" in recommending the appointment of Lord Mandelson as the UK's ambassador to the US.Morgan McSweeney, who resigned in February over the advice, said he felt the peer's experience as an EU trade envoy would help the UK secure a US trade deal.However, he told MPs on the Foreign Affairs Committee that after fresh revelations about Lord Mandelson's friendship with the late convicted sex offender Jeffrey Epstein emerged, it "dawned" on him that he had not given the "full truth" about their friendship.McSweeney admitted No 10 wanted Lord Mandelson in post "quickly" but insisted officials were never asked to "skip steps".In a rare public appearance by a senior advisor, he also denied telling the Foreign Office "explicitly or implicitly" that security checks "should be cleared at all costs".The decision to appoint Lord Mandelson has dogged the prime minister for months but anger was reignited over the issue after it emerged the peer was given security clearance for the role by the Foreign Office, despite concerns being raised by vetting officials.The prime minister has said no one in Downing Street - including himself and McSweeney - were aware the Foreign Office had gone against the vetting recommendation until recently.Sir Keir is facing a vote by MPs later on whether there should be a parliamentary investigation over claims he misled the House of Commons about Lord Mandelson's vetting.While he is unlikely to lose the vote, any rebellion by Labour MPs would do more damage to his authority.Follow live updatesKey points as MPs question ex-senior aide about Mandelson appointmentMinisters rally support for PM ahead of Mandelson voteLord Mandelson was sacked as ambassador in September 2025, after new information came to light about the depth of his relationship with Epstein.This included photos of the pair together and supportive emails he sent to Epstein as he faced charges for sex offences in 2008.McSweeney told the committee that when he saw the revelations "it was like a knife through my soul"."The nature of the relationship that I understood he had with Epstein was not a close friendship," he said."How I understood it at the time was a passing acquaintance that he regretted having and that he apologised for."What has emerged since then was way, way, way worse than I had expected at the time."Before Lord Mandelson was appointed, a due diligence check - a separate process to the security vetting - was carried out by a team at the Cabinet Office and sent to the prime minister. This flagged Lord Mandelson's continued relationship with Epstein after his conviction as a potential "reputational risk".McSweeney was subsequently asked by the PM to send three follow-up questions to Lord Mandelson about his association with Epstein.While at the time McSweeney said he believed the answers were truthful, he later realised he was not given the "full truth" and that revelations in the Epstein files showed Lord Mandelson was "unfit" for the job.The BBC understands Lord Mandelson's view is that he answered questions about his relationship with Epstein in the vetting process accurately.No way to raise Mandelson concerns, former…

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