Mandelson files reveal criticism of Starmer and ambassador vetting details

Mandelson files reveal criticism of Starmer and ambassador vetting details
Former UK ambassador to the U.S., Peter Mandelson, enters a vehicle in London amid a police investigation linked to Jeffrey Epstein, 14 February, 2026.
Reuters

More than 1,500 pages of government documents relating to Peter Mandelson's appointment and tenure as UK ambassador to the U.S. have been published, revealing private exchanges with ministers, criticism of Prime Minister Keir Starmer and details of the vetting process that preceded his appointment.

The second tranche of documents, released this week, contains emails, WhatsApp messages and internal correspondence involving Mandelson and senior Labour figures.

Officials said the publication spans more than 1,500 pages, making it more than 10 times larger than the first release in March, which consisted of a 147-page document. The Cabinet Office said the process of reviewing and publishing the material has already cost more than £1 million.

Criticism of Starmer

Among the most politically sensitive disclosures are private messages in which Mandelson criticised Starmer's leadership. In exchanges with senior ministers, he reportedly said the Prime Minister "lacks verve" and argued that the government needed "more panache".

Mandelson also described Downing Street as "beleaguered and bereft," suggesting it required a significant overhaul to restore confidence and direction.

The files contain conversations with pensions minister Torsten Bell, who referred to the government as "messy" during discussions in 2024. Mandelson responded by arguing that ministers were not developing or delivering policy effectively.

Missing messages and vetting process

Government notes released alongside the documents state that Mandelson declined to provide messages stored on his personal phone, despite requests made through his legal representatives during the publication process.

The papers also include details from the vetting process carried out before Mandelson took up the ambassadorial role, including discussions about his international contacts.

Trump dispatch box request

Among the more unusual revelations is an account claiming that U.S. President Donald Trump wanted a red dispatch box similar to those used by British ministers. Mandelson reportedly compared the request to "something out of The Thick Of It," a British political comedy series that satirises government dysfunction and political infighting.

The release forms part of a wider parliamentary effort to scrutinise Mandelson's appointment and conduct while serving as ambassador. Ministers are expected to face further questions from MPs later this week as lawmakers examine the contents of the newly published documents.

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