Parliamentary Inquiry into Peter Mandelson’s Security Clearance and the Prospective Japan Ambassadorship

In late January 2025 the Foreign, Commonwealth & Development Office (FCDO) granted former minister Peter Mandelson security clearance despite United Kingdom Security Vetting (UKSV) advising a “high” concern and recommending denial. Senior civil servant Olly Robbins signed the approval after oral briefings from Ian Collard, former head of security, and Corin Robertson, then chief operating officer. The clearance cleared Mandelson for a US ambassadorship, now under parliamentary scrutiny. Keir Starmer dismissed Robbins three weeks ago, calling the failure to inform him “unforgivable” and expressing personal fury. Robertson, slated to become ambassador to Japan in August 2026, remains the only senior official not yet called before the foreign affairs select committee.

The Guardian

• 29 January 2025 – UKSV advises “high” concern and recommends denial; later that month clearance is granted after oral briefings, with no written record.

The Guardian

• September 2025 – Mandelson is removed from the US posting; Robbins and Collard later request access to his vetting file.

The Guardian

• May 2026 – Committee considers summoning Robertson; documents to be released under a “humble address” motion in the coming weeks.

The Guardian

Investigators note the absence of written minutes for the clearance decision. Robbins and Collard say they relied on verbal briefings and did not read the UKSV summary. Whether Robertson reviewed the vetting file or only received oral summaries remains unclear. Officials have called the case “borderline,” but no public evidence confirms that label, creating a discrepancy between statements and documents.

The Guardian

Keir Starmer called Robbins’s omission unforgivable and expressed personal fury. Cabinet Office permanent secretary Cat Little said any individual within the security chain may request access to vetting material if deemed necessary. The FCDO declined to comment on Robertson’s prospective testimony.

The Guardian

The Intelligence and Security Committee has criticised the government for withholding portions of Mandelson’s vetting file and for applying redactions “far too broadly,” raising concerns about transparency in the forthcoming document release.

The Guardian

Three senior civil servants were involved in the clearance decision; Robertson is the only one not yet questioned. Robbins was dismissed three weeks before publication. The “humble address” motion mandates release of all papers relating to Mandelson’s appointment.

The Guardian

• “unforgivable” — Keir Starmer

The Guardian

• “furious” — Keir Starmer

The Guardian

• “the risks could be mitigated” — Ian Collard, former head of security, FCDO

The Guardian

• “far too broadly” — Intelligence and Security Committee

The Guardian

The committee may summon Robertson for written or oral evidence, potentially clarifying whether she received the “borderline” assessment. The upcoming release of documents under the humble address will be examined for completeness and redaction scope, and further parliamentary action may follow.

The Guardian