Officials debate withholding Mandelson vetting documents from parliament

Exclusive: Opinions split on ‘unprecedented’ release of files, despite demand for ‘all papers’ related to ex-US ambassador’s appointment

• https://www.theguardian.com/politics/2026/apr/16/revealed-mandelson-failed-vetting-but-foreign-office-overruled-decision">Revealed: Mandelson failed vetting but Foreign Office overruled decision

• https://www.theguardian.com/politics/2026/apr/16/five-key-questions-decision-peter-mandelson-security-clearance">Five key questions: Who overruled the decision to deny Mandelson security clearance?

Senior government officials have been considering whether to withhold from parliament sensitive documents that show Peter Mandelson had https://www.theguardian.com/politics/2026/apr/16/revealed-mandelson-failed-vetting-but-foreign-office-overruled-decision">failed security vetting before he assumed the role of US ambassador, the Guardian can reveal.

Any such decision could amount to an extraordinary breach of a parliamentary vote which ordered the release of “all papers” relevant to Mandelson’s appointment.