Looking back from after Keir Starmer\'s resignation, it is tempting to treat the collapse of his premiership as something that simply accumulated gradually, decision by decision, until the pressure became unbearable. Alastair Campbell and Rory Stewart, discussing the Peter Mandelson ambassadorship affair on The Rest Is Politics weeks before the end actually came, made a more specific argument: this particular episode was not just one more bad headline, but a genuine inflection point that exposed a failure of both judgment and seriousness at the very top of government.
Revisiting this episode now, with the benefit of hindsight, is genuinely useful — it shows two of Westminster\'s most experienced observers correctly identifying, in close to real time, the specific failure pattern that would recur right through to Starmer\'s final NATO summit interview months later.
A Political Appointment Nobody Asked For
The underlying decision, as Stewart laid out, was itself questionable before any scandal emerged: Starmer chose to replace an experienced, well-regarded career diplomat in Washington with a political appointee, at a moment when having someone with an established relationship with the Trump administration arguably mattered more than usual. Campbell added a detail that had been circulating in Westminster at the time — that former Conservative chancellor George Osborne had reportedly been floated as an alternative candidate for the same post, a suggestion he found almost impossible to credit given the political baggage involved, but one that several newspapers had reported with apparent seriousness.
“Did He Actually Care at All?”
The most damaging line of argument concerned not the original appointment but what happened after the vetting failure became public. Campbell\'s central charge was that Starmer had defended the appointment in the House of Commons as recently as January, insisting the vetting process had been followed properly, while his own permanent secretary, Antonio Romero, had reportedly known about the underlying problem for a month before the prime minister did. “At what point did Starmer try to find out the truth?” Campbell asked. “Did he actually care at all?” It is a serious charge precisely because it does not require assuming bad faith — simple institutional incuriosity, on an issue that had already partly engulfed the government once, was judged by both hosts to be almost as damning as deliberate concealment would have been.
The Cricket Analogy
Stewart offered a memorable framing for why this mattered so much operationally: being prime minister, he argued, is like facing the twenty best fast bowlers in the world simultaneously — Iran, Ukraine, the economy, public services all arriving at once — which means a prime minister has to trust a small circle of people completely to handle issues that cannot all be personally supervised, so that the biggest decisions can get the attention they need. The Mandelson affair, in this framing, was not really about one bad appointment. It was evidence that Starmer\'s inner team either was not filtering information to him effectively, or that he was not asking the right questions of the team he had — and either explanation pointed to the same underlying weakness that would later surface again and again, right through to Morgan McSweeney\'s own post-resignation admission that the government had never built a functioning “network of people... who share your vision” capable of absorbing pressure without it reaching the prime minister unfiltered.
What This Means Going Forward
The Mandelson affair matters to the historical record for a specific reason: it shows that the structural weaknesses which eventually forced Starmer out were visible, and were being clearly diagnosed by informed observers, months before the actual resignation. For Andy Burnham\'s incoming government, the lesson embedded in this episode is not really about Peter Mandelson at all — it is about whether a prime minister builds a team capable of surfacing bad news quickly, rather than one that lets problems fester until they become unanswerable in the House of Commons.