With a new prime minister and a blank sheet of paper, John Healey could have started his chancellorship with a burst of announcements. After all, Andy Burnham appears determined to try to do things differently and, even if most of the policies announced so far are very small-scale, at least he is trying. His chancellor, by contrast, has been very quiet. He popped up briefly to replay a few familiar complaints about price gouging by the supermarkets, even though the major grocery chains operate o