The Peter Mandelson vetting affair has unveiled an extraordinary conflict at the heart of the British government, pitting senior civil servants against one another and placing immense political pressure on Prime Minister Keir Starmer. The controversy centers on the appointment of Peter Mandelson as the UK’s ambassador to the US, a decision made despite security officials initially recommending against his clearance.

Key revelations emerged during testimony to the Commons foreign affairs committee, primarily from Cat Little, the permanent secretary at the Cabinet Office. Little disputed claims made by Olly Robbins, the former permanent undersecretary at the Foreign Office, who had been sacked following the scandal. Little testified that Robbins had refused to provide her department with a summary of Mandelson’s vetting clearance, which would have revealed his decision to grant clearance against security advice. This summary, dating to late January when Mandelson was given vetting clearance, was instead obtained by Little directly from UK Security Vetting (UKSV), an agency housed within the Cabinet Office, a step she described as an “unusual judgment.”

Further, Little clarified an earlier “debate” about whether Mandelson, as a member of the House of Lords, even required developed vetting. She stated that emails she reviewed indicated it was actually the Foreign Office that initiated this policy conversation with UKSV and the government security group, seeking advice on a long-standing convention. While the response confirmed it was ultimately the Foreign Office's decision, vetting was indeed deemed necessary.

The Cabinet Office permanent secretary also revealed that there appeared to be no formal record of Prime Minister Keir Starmer approving Mandelson’s appointment. Despite it being “normal to keep a record of those sorts of decisions,” Little stated that such a document did not seem to exist in this case. She further confirmed a delay between her first awareness of Mandelson’s initial vetting block in late March and informing Starmer on 14 April, stating she needed time to seek legal and policy advice to understand the consequences of sharing such sensitive information within legal frameworks.

Adding to the institutional friction, Little disclosed that the Foreign Office’s security team requested access to a number of documents relating to Mandelson’s vetting file on 15 September, after he had been sacked. This request was fulfilled the same day by UKSV, a detail that contrasts with Robbins’ previous testimony where he stated he had considered viewing the file but was told he could not without a national security justification.

Olly Robbins, who was dismissed as Foreign Office permanent secretary, had overturned UKSV’s recommendation to deny clearance for Mandelson in late January. He had told MPs that “constant pressure” was applied regarding the vetting process, contradicting Starmer’s later assertions. Robbins' actions, including not informing Downing Street about the initial security refusal, were central to his dismissal.

Prime Minister Keir Starmer has faced increasing pressure over his handling of the affair. Reports indicate he sent a message to Mandelson, stating he would be “brilliant” as US ambassador, before the appointment was publicly announced in December, despite earlier warnings about Mandelson’s friendship with convicted sex offender Jeffrey Epstein. Starmer has insisted that normal processes were followed and denied any pressure was exerted on the Foreign Office. However, he later admitted to making an “error of judgment” in selecting Mandelson for the role.

The political fallout has been significant, with opposition parties and even a former Labour MP, Karl Turner, calling for Starmer to face a Commons privileges committee inquiry to determine if he misled Parliament. Accusations arose from discrepancies between Starmer’s statements during Prime Minister’s Questions and Robbins’ evidence regarding pressure applied during the vetting process. Divisions within the Cabinet have also reportedly emerged over Starmer’s decision to swiftly sack Robbins.

Peter Mandelson’s involvement in the scandal extended beyond his diplomatic appointment. He was sacked as ambassador on 11 September following the emergence of details regarding his closeness to Jeffrey Epstein. Subsequently, his corporate strategy firm, Global Counsel, which he founded in 2010, went bust owing £4.5 million, including £645,000 to HM Revenue and Customs. The firm had sacked Mandelson in September, minutes after his ambassadorial firing, fearing negative media coverage. Mandelson was later arrested and questioned over allegations of passing market-sensitive government information to Epstein while a minister, though he denies wrongdoing and is currently on police bail without charge.

The ongoing crisis highlights profound institutional challenges and accountability concerns within the government, scrutinizing the processes of security vetting, ministerial appointments, and communication between high-ranking officials and the Prime Minister.