A decision made almost entirely without written record
When a government grants its most sensitive security clearances against the explicit advice of its own vetting agencies, and does so without written record, the question it must eventually answer is not merely procedural but constitutional: who, in the end, is accountable for decisions made in the fog of unminuted conversation? The investigation into Peter Mandelson's January 2025 security clearance has already ended one senior civil service career, and now parliament turns its attention to Corin Robertson — the Foreign Office's former chief operating officer, soon to be UK ambassador to Japan — as the one significant figure yet to face questioning. Her testimony, if compelled, may illuminate not just this decision, but the informal architecture through which consequential choices are sometimes made at the highest levels of the British state.
- A vetting agency explicitly recommended denying Mandelson clearance, rating concern as 'high,' yet the Foreign Office overrode that advice under apparent pressure to install him swiftly in Washington.
- The decision left almost no paper trail — senior officials claim they never read the vetting file itself, relying instead on verbal briefings with no minutes taken, creating an accountability vacuum that parliament is now struggling to fill.
- The one official who made the final call has already been dismissed by the Prime Minister, but the colleague who first assessed the risk and agreed it could be 'mitigated' has never been questioned directly by MPs.
- A further anomaly deepens the mystery: seven months after granting clearance, two of the officials involved suddenly sought to access Mandelson's vetting file — a request neither has explained.
- Parliament's foreign affairs select committee must now decide this week whether to summon Robertson before she departs for Tokyo, in what may be the last opportunity to close the gaps in a record that is, by design or neglect, almost entirely absent.
In late January 2025, the Foreign Office granted Peter Mandelson security clearance despite a vetting agency's explicit recommendation to deny it. The decision was made under apparent pressure — Keir Starmer had already announced Mandelson as his pick for US ambassador, and there was urgency to get him to Washington. Now, months later, parliament is still trying to understand how that decision was reached, and one key figure has yet to be asked.
Olly Robbins, the Foreign Office's most senior official, made the final call and paid for it with his career after the Guardian revealed what had happened. Starmer called his failure to inform ministers 'unforgivable.' Robbins has defended himself, arguing that vetting information should not be shared with elected officials. Ian Collard, the former head of security, submitted written responses to the foreign affairs select committee rather than appearing in person.
But Corin Robertson — who was chief operating officer at the time and who, according to Collard's own evidence, first discussed the case with him and agreed the risks could be mitigated before it was escalated to Robbins — has never been questioned at all. She is due to take up her post as UK ambassador to Japan in August. This week, the committee will decide whether to call her.
What makes her testimony potentially decisive is the extraordinary absence of documentation. Both Robbins and Collard say they never actually read Mandelson's vetting summary, relying instead on oral briefings. No minutes were taken. No audit trail exists. Robertson could confirm or contradict their accounts, and could shed light on a further puzzle: both men have described Mandelson's case as 'borderline,' yet no document supports that characterisation, and no other official has used that word.
There is also the unexplained matter of why, in September 2025, seven months after the clearance was granted, both Robbins and Collard sought to access the vetting file they claim never to have read. The committee is still waiting for documents to be released under a parliamentary motion, while the intelligence and security committee has raised concerns that the government is withholding the vetting file and over-redacting related papers. Robertson's testimony, if it comes, may be the last chance to bring light to a process conducted almost entirely in the dark.
In late January 2025, the Foreign Office made a decision that would unravel across the following months: it granted Peter Mandelson security clearance despite being advised by vetting officials to deny it. Now, as parliament investigates how that decision came to pass, one official remains unquestioned. Corin Robertson, who was the Foreign Office's chief operating officer at the time and played a role in the clearance decision, is due to take up her post as UK ambassador to Japan in August. This week, the foreign affairs select committee will decide whether to call her to testify.
The clearance decision itself has already claimed one senior career civil servant. Olly Robbins, the Foreign Office's most senior official, made the final call to grant Mandelson clearance. When the Guardian revealed what had happened, Prime Minister Keir Starmer fired him, saying his failure to inform ministers was "unforgivable" and that he was "furious." Robbins has since defended himself, arguing he was right not to divulge information from the vetting process to elected officials. Ian Collard, the Foreign Office's former head of security and another figure involved in the decision, submitted written responses to the committee rather than appearing in person.
Robertson is the missing piece. According to Collard's own evidence to MPs, he initially discussed Mandelson's vetting with Robertson before escalating the matter to Robbins. Collard told the committee that Robertson agreed "the risks could be mitigated" and that the case should go to Robbins for a final decision. Yet no one has asked Robertson directly about these conversations, about what she knew, or about what she actually reviewed. The vetting agency, United Kingdom Security Vetting, had advised on January 29 that there was "high" concern about Mandelson and that clearance should be "denied." Robbins testified there was "pressure" to get Mandelson to Washington, since Starmer had already announced him as his pick for US ambassador.
What makes Robertson's potential testimony crucial is a fundamental gap in the record. Both Robbins and Collard have claimed they never actually read Mandelson's vetting summary document. Instead, they relied on verbal briefings. No one took minutes. No audit trail exists. The conversations appear to have happened in a fog of recollection rather than documented fact. If Robertson was questioned, she could be asked whether she too saw only oral briefings, or whether she actually reviewed the file. She could be asked to corroborate—or contradict—the accounts Robbins and Collard have already given.
There is another puzzle. Both Robbins and Collard have claimed that the vetting agency described Mandelson's case as "borderline." Yet no public document confirms this characterization, and no other official who has seen the file has described it that way. Robertson could be asked what she was told, and on what evidence that claim rests. She might also face questions about why, in September 2025, seven months after granting clearance, both Robbins and Collard suddenly sought to access Mandelson's vetting file. Neither has explained that request.
The investigation itself is nearing completion, but it is waiting for further documents to be released under a parliamentary motion known as the humble address. The Cabinet Office is compiling papers related to Mandelson's appointment for public release. However, the intelligence and security committee has already raised concerns that the government is withholding his vetting file and applying redactions too broadly. Robertson's testimony, if it happens, would come as the committee tries to piece together a decision-making process that was conducted almost entirely without written record—a process that has already toppled one of the civil service's most powerful figures and continues to cast doubt on how security clearance decisions are actually made at the highest levels of government.
Citações Notáveis
Robbins testified there was 'pressure' to get Mandelson to Washington, since Starmer had already announced him as his pick for US ambassador— Evidence to foreign affairs select committee
Collard told the committee that Robertson agreed 'the risks could be mitigated' and that the case should go to Robbins for a final decision— Ian Collard, former FCDO head of security
A Conversa do Hearth Outra perspectiva sobre a história
Why does it matter whether Robertson actually read the vetting file or just heard about it secondhand?
Because if three senior officials all claim they never looked at the actual document, it raises a question about what they were actually deciding on. They're making a judgment about national security based on someone else's summary of someone else's notes. That's a chain of telephone.
But Robbins was the most senior person. Doesn't he have the authority to make that call?
He does, technically. But the vetting agency said no. The question is whether he understood what he was overriding. If he never read the file, how did he know the risks well enough to decide they could be managed?
What would Robertson add that we don't already know?
Collard says he talked to her first, and she agreed the risks could be mitigated. But we don't know what she actually saw, what she actually understood, or whether she was working from the same incomplete picture everyone else was. She might confirm the story, or she might reveal it was even more fragmented than we thought.
Is there a chance she'll refuse to testify?
She hasn't responded to requests for comment. But she's a career civil servant about to become an ambassador. Refusing parliament would be difficult. The real question is whether the committee will even ask her, and whether by then the government will have released enough documents to make her testimony meaningful.
What happens if the documents stay redacted?
Then parliament is investigating a decision in the dark. Robertson's testimony becomes even more important—she might be the only person who can fill in what the papers won't say.