Simon Hoggart’s column in The Guardian today has this great little anecdote:
“The other day I heard a story about Sir Robin Butler, the cabinet secretary to three prime ministers. At a dinner he was asked their reaction when he said something they disagreed with. Thatcher, he said, simply blew up. John Major would not say anything, but would look hurt. And Tony Blair would - pause for effect - say: "Um, yes, I agree with you."