New Mandelson files reveal Labour tensions and Starmer scrutiny

More than 1,500 pages of emails, texts, WhatsApps and handwritten notes have widened the Mandelson affair into a deeper test of how ambassadorial appointments are checked, defended and explained. The new release, issued after a House of Commons demand for due diligence, conflict-of-interest forms, security vetting, communications and departure payments, has sharpened scrutiny of Keir Starmer by showing not just what ministers knew, but what still is not fully visible.

The first gap is the vetting itself. Mandelson took up the post in February 2025 and was out seven months later, sacked in September 2025 after the Epstein links around his appointment became politically toxic. Yet the files do not close the central question of what the government’s checks found before sending a former Labour heavyweight to Washington at the start of Donald Trump’s second presidency. Public trust depends on whether the system flagged the risks early and whether those warnings were acted on, not buried under the politics of the moment.

The second gap is the conflict-of-interest trail. The Commons asked for the papers behind the appointment, but the release still leaves unresolved how ministers weighed Mandelson’s past, his ties to Jeffrey Epstein and the reputational risk of placing him in one of Britain’s most sensitive diplomatic jobs. A handwritten note dated November 18, 2024, from Mandelson to David Lammy, saying he would make sure the government “never regret” appointing him, now reads less like confidence than a reminder of how much was riding on judgment that has since been called into question.

The third gap is the private lobbying and political temperature around Number 10. Mandelson texted Pat McFadden that Starmer was “not leading from the front,” said there was a “strong anti Keir tide,” and described Number 10 as “beleaguered and bereft,” needing a “complete revamp.” He also urged ministers toward a more “Trumpian risk-taking and daredevil way” after Labour’s defeat in the Runcorn by-election. Those messages show an ambassador who was still operating inside Labour’s political bloodstream, not standing apart from it.

The fourth gap is the material still withheld. Some documents were held back at the request of Scotland Yard because of an ongoing criminal investigation, and the force later sought access to redacted material connected to Mandelson and Epstein. That missing layer matters because any serious appointment process depends on knowing whether police concerns intersected with ministerial decisions.

The fifth gap is the paper trail on Mandelson’s own devices. The government wrote to him on March 31, 2026 seeking information held on his personal phone, and he declined to hand it over. That refusal leaves unanswered how much relevant correspondence, messaging and context still sits outside the public record. Starmer is already under pressure from more than 70 MPs calling for his resignation, and the Mandelson files have done little to calm a scandal that now goes to the heart of how trust is earned, checked and then lost.