Simon Case, the former Cabinet secretary, served under David Cameron, Theresa May, Boris Johnson, Liz Truss, Rishi Sunak and Sir Keir Starmer, and knows exactly why all of them ended up failing. Lord Case’s descriptions of each of the prime ministers he worked for sums up the themes of our interview: Cameron was “a decisive team player”; May “decent but trapped”; Johnson an “amazing communicator” but “a flip-flopping decision-maker”; Truss “too short-lived to tell”; Sunak a “decent, detailed