Britain’s Prime Minister Keir Starmer accused Peter Mandelson of “betraying our country” by leaking information to Jeffrey Epstein and said the former Labour grandee “lied repeatedly” during the process that led to his appointment as U.K. ambassador to the United States. Mandelson, a former Cabinet minister and ex–EU trade commissioner, resigned from the House of Lords on Tuesday. Hours later, British police said they were investigating “misconduct in public office offences” linked to the matter. Starmer said he regretted…

Peter Mandelson will step down from the House of Lords amid allegations he passed market-sensitive government information to the late financier and convicted sex offender Jeffrey Epstein, prompting Prime Minister Keir Starmer to threaten swift legislation to strip the former Cabinet minister of his title. The Cabinet Office said it handed material to police after an initial review of documents released as part of the Epstein files found they contained “likely market-sensitive information” and that official handling…