A decision made in haste, under pressure, with crucial details lost or obscured
In the long tradition of appointments made at the intersection of political ambition and institutional caution, the selection of Peter Mandelson as Britain's ambassador to Washington has become a case study in how consequential decisions can be made without anyone fully reading the evidence before them. A parliamentary inquiry has gathered tens of thousands of words of testimony, yet the documentary foundation beneath those words remains incomplete — withheld, redacted, or never consulted in the first place. What lingers is a question older than any single appointment: when institutions defer to oral assurance over written record, who ultimately bears responsibility for what is missed?
- A security vetting agency marked Mandelson 'high concern' and recommended denial, yet the Foreign Office cleared him within hours — and no one has explained why.
- The official who made the final clearance decision never read the vetting document, relying instead on a briefing from someone who also hadn't read it, creating a chain of hearsay at the heart of a sensitive appointment.
- The inquiry's credibility is strained by missing papers, over-broad redactions, and a government that promised full disclosure but has yet to deliver it.
- A single contested word — 'borderline' — has become the fault line of the investigation, with no corroborating document yet produced to support the claim the case was anything other than a clear denial.
- The committee must now decide whether to issue findings on incomplete evidence or extend the inquiry into June, when the next batch of documents is expected to arrive.
The foreign affairs select committee is weighing whether to conclude or deepen its investigation into Peter Mandelson's appointment as US ambassador — an appointment that has cast a shadow over Keir Starmer's premiership since late 2024. Despite hearing more than 77,000 words of testimony from senior officials, MPs are confronting a record full of gaps: key documents remain withheld or heavily redacted, and the government's promise of full disclosure has not been kept.
The vetting process itself is at the centre of the concern. In January 2025, the UK Security Vetting agency assessed Mandelson as a 'high' overall risk and recommended his clearance be denied. Within hours, the Foreign Office overruled that recommendation and granted clearance anyway, citing unspecified 'mitigations' that have never been shared with the committee. What makes this more troubling is that the permanent secretary who made the final decision, Olly Robbins, never read the vetting summary — he relied on an oral briefing from his security chief, who had also not read the document and was himself relying on a briefing from an unnamed subordinate.
When pressed on why a document classified at a routine level was treated as untouchable, Robbins spoke of keeping such files in a 'hermetically sealed box.' The committee chair suggested that appointing a controversial figure to one of Britain's most prominent diplomatic posts might constitute the 'wholly exceptional circumstance' that warranted reading it. Robbins disagreed.
A further dispute has emerged around the word 'borderline.' Robbins claimed UKSV had considered Mandelson's case borderline and was only leaning toward denial — yet the vetting template shows two red boxes ticked for 'high concern' and 'clearance denied,' with a less severe amber option available but not chosen. Neither the Prime Minister nor the Cabinet Office permanent secretary, both of whom have seen the document, ever used the word borderline in their own accounts.
The mystery sharpened when, after Mandelson's withdrawal in September 2025, Robbins and his security chief sought to read the vetting summary for the first time — only to be initially refused. When the document was eventually emailed to the security chief's team, his notes recorded both the 'high concern' and 'clearance denied' tick boxes, but also a line attributed to UKSV describing the case as 'very borderline.' The committee cannot yet determine whether that phrase appeared in the document itself or whether it was something the official believed he had been told months earlier.
With the intelligence and security committee already criticising the government for withholding files and redacting too broadly, and the next document release not expected until June, the inquiry faces a fundamental problem: the testimony it has gathered rests on a documentary foundation that remains, deliberately or otherwise, incomplete.
The foreign affairs select committee is meeting this week to decide whether to wrap up its investigation into Peter Mandelson's appointment as US ambassador or push deeper. After hearing more than 77,000 words of testimony from five of the government's most senior officials and advisers, MPs are facing a puzzle with missing pieces. The core problem is straightforward: the government promised to release all documents related to the appointment, but key papers remain withheld or redacted, leaving critical questions unanswered.
The appointment itself has shadowed Keir Starmer's premiership since December 2024. Mandelson was withdrawn from the role in September 2025 after revelations about his relationship with sex offender Jeffrey Epstein. But before that withdrawal, the vetting process itself raised alarms. In late January 2025, the UK Security Vetting agency completed its assessment of Mandelson and concluded he posed a "high" overall concern. Their recommendation was unambiguous: clearance should be denied. Yet within hours, the Foreign Office decided to grant him clearance anyway, with what officials called "mitigations." The committee has not been told what those mitigations were, or why the security agency regarded him as a risk in the first place.
What emerges from the testimony is a chain of officials who never actually read the vetting summary document themselves. Olly Robbins, the permanent secretary at the Foreign Office who made the final decision to clear Mandelson, admitted he did not read the roughly ten-page UKSV summary. Instead, he relied on an oral briefing from his security chief, Ian Collard. Collard, in turn, did not read the document either—he too depended on an oral briefing from an unnamed official on his team. A third official, Corin Robertson, the department's chief operating officer, was involved in discussions about whether the risks could be mitigated. When pressed on why he avoided reading a document marked merely "official – sensitive," a routine classification far below secret or top secret, Robbins invoked the need to keep such files in a "hermetically sealed box." He said it would require a "wholly exceptional circumstance" for him to review any such file. When Emily Thornberry, the committee chair, pointed out that appointing a controversial figure as US ambassador seemed wholly exceptional, Robbins disagreed.
Another layer of confusion has emerged around Robbins' claim that UKSV considered Mandelson's case "borderline" and was only "leaning towards" recommending denial. Committee members were puzzled by this characterization. The actual summary document, according to a template published by the Cabinet Office, contained two red boxes with ticks denoting "high" overall concern and a recommendation of "clearance denied." The template suggests UKSV had an "amber" option available—clearance approved with risk management—but chose the more severe option instead. No documents published since Robbins' testimony have supported the "borderline" claim. Neither Starmer, who has seen the summary, nor Cat Little, the permanent secretary of the Cabinet Office, who has also seen it, made any reference to the case being borderline when they addressed Parliament or the committee.
The mystery deepened in September 2025, after Mandelson was sacked. Both Robbins and Collard asked to see the vetting summary document—the very document Robbins had insisted was too sensitive to review seven months earlier. The Cabinet Office declined, saying they lacked a national security justification. But then, according to Little's testimony, the document was emailed to Collard's team four days after Mandelson's withdrawal. When Collard reviewed it in mid-September, he took notes. He recorded the tick boxes showing "high concern" and "clearance denied." But the Foreign Office letter to the committee added that Collard also noted UKSV had stated in its final case assessment: "Overall, I believe that this is a very borderline case." The committee now faces a critical question: was Collard referring to language actually in the UKSV document he was viewing for the first time, or was he recording something he claimed to have been told orally seven months earlier? If the former, why has no other official or minister referenced such language? If the latter, who told him the case was borderline, and when?
The intelligence and security committee, which reviews sensitive documents before release under parliamentary order, has already criticized the government for withholding Mandelson's vetting file and applying redactions "far too broadly." The next batch of documents is not expected until June. As the foreign affairs select committee considers its next steps—whether to issue preliminary conclusions now or extend the inquiry—there is a growing sense that the investigation cannot reach solid ground until the documentary record is complete. The contradictions in testimony, the gaps in memory, the officials who relied on hearsay rather than evidence: all of it points to a decision made in haste, under pressure from Downing Street, with crucial details either lost, obscured, or never properly examined in the first place.
Citas Notables
It would require a wholly exceptional circumstance for him to review any such file. When asked if appointing a US ambassador was wholly exceptional, Robbins said: No.— Olly Robbins, former Foreign Office permanent secretary, to the foreign affairs select committee
The government is withholding Mandelson's vetting file and applying redactions far too broadly.— Intelligence and security committee, in criticism of government compliance with parliamentary orders
La Conversación del Hearth Otra perspectiva de la historia
Why would a permanent secretary refuse to read a ten-page document about a major security decision?
Robbins said such files need to stay sealed, that only exceptional circumstances justify opening them. But the committee pointed out: appointing someone as US ambassador seems exceptional. He disagreed.
That's striking. What changed his mind later?
After Mandelson was sacked in September, Robbins suddenly wanted to see the same document. The Cabinet Office said no—he'd need a security justification. But somehow it got to Collard's team anyway, four days after the firing.
And Collard read it then?
Yes. He took notes. But here's where it gets murky: he wrote down that UKSV called it a "very borderline case." No other official has mentioned borderline language in any document. Not Starmer, not the Cabinet Office permanent secretary, no one.
So either Collard found language in the document that nobody else has seen, or he was recording something he heard orally months earlier?
Exactly. And neither he nor Robbins has been asked to explain which it was, or who told him it was borderline in the first place.
What does the actual vetting summary say?
It has red boxes with ticks for "high concern" and "clearance denied." The template shows UKSV had a softer option available—amber, clearance with risk management—but chose the harder line instead.
So the recommendation was clear.
Crystal clear. Which makes the whole "borderline" narrative even stranger. It's the kind of detail that, if true, should be everywhere in the record. Instead it's nowhere—except in Collard's notes from September, months after the fact.