In the kitchen of her rambling Devonshire home, Sasha Swire, whose mischievously indiscreet political diaries are published this week, appears to be suffering from a bad case of the writerly equivalent of buyer’s remorse. Round and round the table she goes, as busy as one of her bees, pausing only occasionally to fling open the door of her Aga, into which she then carefully inserts her bum (I think the idea is to warm it up, but given that the weather is fine today, perhaps it’s more a matter of comfort). “Oh, please don’t put that in,” she yelps at one point, my having brought up a particularly choice entry from 2012, in which Michael Heseltine pretends, at a private dinner, that the queen has asked him to form a government. But it’s in your book, I say: all the world will be able to read it soon. She performs another frantic circuit of the room. “Oh, I beg you. Please don’t write about that.”