Britain to Release Documents Linked to Mandelson’s Dismissal

The British government plans to make public a second series of documents concerning Prime Minister Keir Starmer’s appointment of Peter Mandelson as the U.S. ambassador.

Peter Mandelson, ousted from his position as British ambassador to the United States last September, finds himself under scrutiny due to connections with Jeffrey Epstein, a convicted sex offender. The release is anticipated to occur on Monday and may bring further embarrassment for Prime Minister Starmer.

In March, initial document releases were triggered by opposition lawmakers’ demand. These documents revealed that British vetting officials had initially recommended against granting Mandelson top-level security clearances. Despite this, the Foreign Office overruled these recommendations, permitting Mandelson’s appointment as Britain’s top envoy to the United States.

Prime Minister Starmer claims Mandelson deceived him regarding the extent of his relationship with Epstein. Additionally, Starmer states he was unaware of the security clearance advice before Mandelson’s appointment.

This controversy led to the dismissal of Olly Robbins, the former top official at the Foreign Office, in April. The situation intensified Starmer’s political challenges, destabilizing his role as Labour Party leader.

Starmer’s challenges increased following poor performance in local elections and the resignation of Wes Streeting, a senior cabinet minister. These events have fueled speculation around a potential leadership challenge later in the year, with Andy Burnham, Manchester’s mayor, running for a parliamentary seat which would enable him to contest in any Labour leadership election.

The documents set for release will likely cover Mandelson’s tenure as ambassador in Washington. They will include emails and messages exchanged with key members of the British government. Mandelson began the diplomatic post in February 2025 and was removed in September.

Mandelson faces a criminal investigation on allegations of misconduct in public office, covering claims of passing confidential government information to Epstein during his service in a previous Labour government from 2009 to 2010. Mandelson denies any criminal activity and is reportedly cooperating with the police. He was arrested and released on bail in February, yet charges have not been filed.

Under pressure from opposition lawmakers, the government commits to publishing all pertinent documents, except those the police request to withhold for investigation purposes. Some documents might be redacted for national security reasons or to protect junior officials’ identities.

Stephen Castle is a correspondent in London for The Times, reporting broadly on British politics and its European relations.