UK Releases 1,500 Pages of Mandelson Files on June 02

The UK government released more than 1,500 pages of WhatsApp messages and emails on June 1, 2026, related to Peter Mandelson’s appointment as ambassador to Washington. The release was the largest government response ever to a parliamentary demand for documents. More than 160 pages contain Mandelson’s text messages and WhatsApps. The files expose embarrassing communications from senior ministers and fuel ongoing political damage for Prime Minister Keir Starmer.

What the Files Reveal

The 1,500-page release includes emails and text messages between Mandelson and government ministers. Work and Pensions Secretary Pat McFadden told Mandelson in May 2025: ‘Every meeting I have is who can we tax in order to pay benefits to others.’ Mandelson also told Foreign Secretary David Lammy before his appointment that the government would ‘never regret’ giving him the job. In critical WhatsApp messages, Mandelson said Starmer ‘lacks verve’. Government minister Nick Thomas-Symonds acknowledged the messages were ’embarrassing’ but said they were released to comply with parliamentary transparency demands.

Scale of the Government Transparency Push

The document release spans three printed volumes and runs over 1,000 pages. Ministers were braced for private texts and WhatsApps to become public. Every government department participated in gathering the documents, which took thousands of hours of work. The first batch of files released in March contained 147 pages. Downing Street released the second batch on June 1 at 14:30 on the government website, followed by a parliamentary statement from Chief Secretary Darren Jones.

Police Investigation Holds Back Key Documents

Mandelson’s full security vetting file was not included in the release. The Metropolitan Police asked for it to be withheld because it forms part of a criminal investigation into Mandelson for alleged misconduct in public office. Mandelson was briefly arrested in February by detectives investigating allegations he passed sensitive government information to Jeffrey Epstein when he was a minister. He has been released without bail conditions as the investigation continues. Minister Jones told Parliament the vetting file will be published ‘when we are in a position to do so.’

Mandelson’s Troubled Tenure

Mandelson was fired from the ambassador role after nine months. A first batch of files published in March revealed ministers had been warned that his friendship with Epstein exposed the government to ‘reputational risk.’ It later emerged that Mandelson had been approved for the ambassador job despite failing security checks. The appointment sparked bitter blame-trading between Starmer and senior civil servants who oversaw the security vetting. Starmer’s poll ratings remain dismal and rivals are eyeing his job as the fallout continues.

Final Thoughts

The 1,500-page release marks unprecedented government transparency but deepens Starmer’s political crisis. Embarrassing minister messages and Mandelson’s criticism of the PM add pressure on an already weakened government facing a police investigation.

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