In four years, Britain’s general election outcome has swung from Labour’s biggest defeat since the 1930s to the Conservatives’ worst drubbing since the modern party emerged in the 1830s, giving Sir Keir Starmer a landslide comparable with Tony Blair’s in 1997.

There’s no sense, as there was at the time of Margaret Thatcher’s victory in 1979, that the country itself has sunk into ungovernability. This time the failure has been governance at the top.