The Cabinet Office has decided not to release a nine‑page security vetting summary on former minister Peter Mandelson , after Scotland Yard warned that disclosure could jeopardise future prosecutions. The decision has triggered accusations of a cover‑up and drawn criticism from the Intelligence and Security Committee for what it calls overly broad redactions.

Cabinet Office’s Decision to Withhold a Nine‑Page UKSV Summary

According to the source, the Cabinet Office chose to keep the UK Security Vetting (UKSV) document from publication, despite a prior commitment to release it as part of the second batch of Mandelson files. The file, prepared by the UKSV agency, was scheduled to be published as early as this week. The Cabinet Office said it was following advice from Scotland Yard that releasing the file could "jeopardise any future prosecution".

Scotland Yard’s Warning and the Potential Impact on Prosecutions

Scotland Yard’s concern, as reported, centres on the possibility that the file’s release could compromise ongoing or future investigations involving Mandelson. The warning came after the vetting agency had recommended denying Mandelson’s clearance due to "concerns about his associations, including those in China". The source notes that the decision to withhold the file has raised questions about the integrity of the vetting process.

Intelligence and Security Committee Criticises Broad Redactions

The Intelligence and Security Committee has criticised the Cabinet Office for applying redactions on non‑security grounds "far too broadly". The committee , which reviews government redactions before documents are released, has called the withholding a potential breach of transparency. The source indicates that the committee’s concerns add pressure on ministers to justify the decision.

Accusations of a Cover‑up and Suppression of Communications

Accusations have also emerged that seniior ministers attempted to suppress communications with Mandelson. According to the source, officials had to request messages multiple times before Cabinet members submitted them. Shadow Chancellor Alex Burghart has accused the government of a "stench of scandal" and demanded honesty about who knew what and when.

Unanswered Questions About the Vetting Process

Key questions remain : What specific evidence led UKSV to recommend denying Mandelson’s clearance? Why was the decision to withhold the file made after a prior commitment to publish it? And how will the withheld summary affect the integrity of future prosecutions involving Mandelson?