In Australia supermarkets have cut the number of plastic bags they hand out by 30 per cent, although other shops have barely started on this blindingly simple, obvious, and even cost-saving environmental measure.
So why has this move not even started in Britain? I spend an amazing amount of time telling shop assistants, often two or three times: "No bag thanks. No, really. No bag!" Most look as though no one has ever said that to them before.