If the leaker who leaked the Darroch memos sought to help Boris Johnson, then their underhand plan has now spectacularly backfired. Boris has been badly damaged by the fall out and on taking office will have to prove to sceptical ministers and officials that he is not being operated by his friend Donald Trump.

Why? Britain’s ambassador to the US resigned today. Leaks of diplomatic cables in which he gave a frank (true) assessment of the Trump administration had made his position untenable, he said.

The resulting backlash at Westminster and in Whitehall today against Boris, over his handling of the Darroch scandal, has been something to behold.