Martin Amis has a new book out and it’s had some critical drubbing. “After a going-over like this it wouldn’t be such a surprise if I were to report that Amis was a broken man: shoulders stooped; grey skin; eyes empty. Actually, he looks in terrific shape. At 54, his slicked-back hair may be of a colour seldom seen on nature’s paint chart, but he’s tanned, relaxed, good-humoured – and thinner than before.”