No wonder Marks & Spencer has suffered from such well-publicised trouble over the years: it doesn’t think more than three days ahead. Last week, the Diary received a press release raving about how, since the latest series of Sex and the City began airing, sales of ready meals on Fridays have rocketed. Notwithstanding the incongruity of thousands of people staying in with a TV dinner to watch a show about people who appear never, ever to stay in with a TV dinner, the Diary can’t help noticing that Sex and the City has now finished. For good. Presumably, Marks & Sparks’ Friday-night ready-meal sales will now proceed to collapse. The next press release should be a corker.