First Peter Mandelson files to be published on Wednesday

The documents relate to the appointment of Lord Peter Mandelson as the UK ambassador to the US, and will coincide with a statement in the House of Commons by the Prime Minister’s chief secretary Darren Jones.

Mr Jones’s statement will come immediately after prime minister’s questions at lunchtime.

It is expected these documents will detail the process of appointing Mandelson to the role. Mandelson was appointed as the ambassador to the US in December 2024, but was sacked in September over his relationship with the late paedophile Jeffrey Epstein.

Earlier this year Mandelson resigned from the Labour Party and was later arrested on suspicion of misconduct in public office. He remains under police investigation and his passport has been handed into the Metropolitan Police to show he is not a flight risk.

The BBC has previously reported the documents could total 100,000. They could include private messages between Mandelson and government ministers, officials and special advisers.

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Last month Prime Minister Sir Keir Starmer claimed the documents will show Mandelson lied to him about the extent of his friendship with Epstein.

This information is not normally made public, but the UK Government was forced to publish them by MPs. The Conservative used a parliamentary procedure called a humble address to force ministers to release the papers.

It is expected the documents will include redactions to make sure they comply with national security measures and do not jeopardise the UK’s foreign relations.

The release of these documents must also not affect the ongoing police investigation into Mandelson.

Mandelson maintains he has not acted in a criminal manner and did not act for personal gain.