Keir Starmer urged to resign over Peter Mandelson vetting revelations in UK politics

On 2026-04-17, Liberal Democrat leader Sir Ed Davey and other opposition figures called on UK Prime Minister Keir Starmer to resign over revelations that Peter Mandelson failed security vetting but was still approved for the ambassador role. The criticism followed reports that the Foreign Office overruled UK Security Vetting and that Starmer was under pressure in Westminster.