Cabinet Office’s top civil servant testifies to committee, confirming that a denied vetting recommendation was ignored by the Foreign Office

On Thursday morning, Cat Little, the permanent secretary of the Cabinet Office, appeared before the Commons foreign affairs committee to explain the procedural details of the Peter Mandelson vetting controversy that has increasingly isolated the prime minister and divided his cabinet.

She outlined that the United Kingdom Security Vetting (UKSV) unit within the Cabinet Office had compiled a vetting file containing a recommendation that diplomatic‑level security clearance, known as DV, should not be granted to Mandelson, and that, under the humble address process, this file had been transmitted to the sponsoring department, the Foreign, Commonwealth & Development Office.

Despite the explicit recommendation to deny clearance, the FCDO exercised its discretionary authority to grant the vetting clearance, a decision for which Little admitted she had not been provided with an audit trail and therefore could not ascertain the justification for overriding the original advice.

The testimony arrived at a moment when Prime Minister Keir Starmer’s handling of the scandal, particularly his earlier decision to dismiss senior Foreign Office civil servant Olly Robbins, has been reported as fostering growing dissent within his own ministers, a situation widely interpreted as a symptom of broader governance fragility.

By confirming that a ministerial department can unilaterally contravene a security vetting recommendation without documented rationale, Little’s evidence implicitly exposes a systemic loophole that permits discretionary clearance decisions to escape parliamentary scrutiny and undermines the intended checks and balances of the vetting architecture.

The lack of an accessible audit trail, as highlighted during the committee hearing, not only hampers accountability but also raises the unsettling possibility that similar overrides may have occurred in the past, concealed by a procedural opacity that bureaucratic cultures often accept as normative.

Consequently, the episode underscores a predictable failure of inter‑departmental coordination, wherein the Cabinet Office’s role in generating vetting assessments collides with the Foreign Office’s capacity to ignore those assessments, revealing a discordant institutional design that the current administration appears either unwilling or unable to rectify.

Observers are therefore left to infer that unless substantive reforms are introduced to mandate transparent documentation of any deviation from security recommendations, future controversies will likely repeat the pattern of opaque decision‑making that fuels political instability and erodes public confidence.

Published: April 23, 2026