• Peter Mandelson resigns from the House of Lords facing scrutiny over ties to Jeffrey Epstein.
• UK police have launched a criminal investigation regarding allegations of public office misconduct.
• Prime Minister Keir Starmer expressed regret over appointing Mandelson as ambassador and accused him of lying about his ties to Epstein.
• Mandelson has denied acting criminally but has stepped down to avoid further embarrassment to the Labour Party.
• The government is proposing legislation to strip him of his noble title, Lord Mandelson.

Peter Mandelson has announced his resignation from the House of Lords amidst a police investigation into allegations that he leaked sensitive government information to the convicted sex offender Jeffrey Epstein. The Speaker of the House of Lords, Michael Forsyth, confirmed that Mandelson's resignation will take effect on February 4, 2026. This decision follows increasing pressure and newly revealed documents that suggest Mandelson maintained connections with Epstein even after his criminal convictions, according to SCMP and LA Times.

Metropolitan Police have launched a criminal investigation to determine if Mandelson's actions constitute misconduct in public office, specifically regarding the transmission of market-sensitive information. Released emails from the U.S. Department of Justice show that while serving as business secretary, Mandelson discussed sensitive government matters with Epstein. This situation has prompted the UK government to provide all necessary support for the ongoing investigation, as stated by a government spokesperson, as reported by Al Jazeera and BBC.

Prime Minister Keir Starmer articulated his deep concern regarding Mandelson's actions, deeming the sharing of sensitive information as “disgraceful.” He has ordered an urgent review of Mandelson’s contacts with Epstein while emphasizing that the alleged misconduct diminishes faith in political integrity. Starmer also commented that Mandelson had “let his country down” and expressed regret over his prior appointment of Mandelson as UK ambassador to the United States, accusing him of a pattern of dishonesty concerning his relationship with Epstein, according to Reuters and Le Monde.

Mandelson has claimed he does not recollect the payments made to him, citing bank documents indicating he received $75,000 from Epstein's accounts. His decision to resign came after leaving the Labour Party to prevent further embarrassment. The ongoing investigation and revelations have led to calls for a parliamentary review of his life peerage status, which could include legislation aimed at stripping him of this title, as reported by LA Times and BBC.