One of the most striking revelations in Anthony Seldon’s new book on Theresa May’s doomed term as prime minister, May at 10, serialised in The Times this week, is how poisonous were the relationships between the key players at the top of government. Her relationship with Boris Johnson, then foreign secretary, deteriorated because she never wanted his input on Brexit policy, chiding him in cabinet for not understanding the detail. “No Boris, it’s not that simple,” she would tell him. Her relationship with chancellor Philip Hammond was similarly in the deep freeze because she hated his attempts to explain economic realities to her. “Theresa, that’s not how it works,” he would apparently tell her in their meetings.

Of course, the picture painted of out-of-their-depth