Sir Olly Robbins expected to face MPs over Mandelson vetting row

The Foreign Affairs Committee is set to question Sir Olly Robbins next Tuesday, putting the decision chain behind Peter Mandelson’s appointment back under a spotlight. MPs want Robbins to explain how a security dispute over developed vetting escalated into the removal of a senior official, and why the Foreign, Commonwealth and Development Office overruled the original clearance decision.

Robbins, the former Permanent-Under-Secretary at the FCDO, has already resigned after the row. The committee has formally written to him to give evidence on 21 April 2026, alongside Sir Chris Wormald, after both men previously appeared before MPs on the same issue. The central question remains how Mandelson was allowed to proceed when security officials had concerns about his vetting.

The case has become one of the sharpest accountability tests for the government’s handling of sensitive diplomatic appointments. Mandelson failed developed vetting, and the FCDO took the rare step of overturning that outcome. Reporting last week said the security clearance had been granted against the recommendation of officials, deepening questions over who signed off on the final decision and what checks were used before the appointment was advanced.

The committee first raised alarm on 15 September 2025, warning that the government had urgent questions to answer about the vetting and security processes behind Mandelson’s appointment as ambassador to the United States. Dame Emily Thornberry said at the time that the dismissal of Mandelson raised serious questions about the integrity of the vetting system, and she said the public deserved answers about why a high-risk appointment had been allowed to go ahead.

Those concerns were sharpened by the timing. The committee linked the failure to the fact that the United Kingdom was without an ambassador at a major diplomatic moment, including Donald Trump’s second state visit to the UK. That left the House of Commons inquiry focused not just on one appointment, but on whether the machinery meant to protect national security and diplomatic credibility had broken down.

Political pressure around the case has widened in recent days. Government reporting indicated that Keir Starmer and Yvette Cooper lost confidence in Robbins, while the government said neither Starmer nor any minister knew about the overrule until earlier this week. David Lammy, who was foreign secretary when Mandelson was appointed, is understood not to have known the FCDO had overruled the vetting until Thursday afternoon. For MPs, the hearing now offers a chance to trace exactly how a clearance dispute in Whitehall became a public test of ministerial oversight and civil service accountability.