It was a classic Whitehall performance: understated and explosive. Sir Olly Robbins did not bluster in front of MPs. The sacked Foreign Office chief calmly stuck to the language of process. He admitted clearing Peter Mandelson to be US ambassador despite UK Security Vetting (UKSV) – in his own words – “leaning against” approval. But the context was key: Downing Street had already set a “very, very strong expectation” that the peer would be in Washington fast and had a dismissive attitude to vetting. The decision to back the peer had effectively been made before the system could catch up.

On Monday, MPs skewered Sir Keir Starmer over appointing Lord Mandelson. The issue was not what the prime minister knew, but what he chose to do with the knowledge. By December 2024, he had seen Cabinet Office “due diligence” and was aware of the peer’s relationship with Jeffrey Epstein after........

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