> A supermarket takes up a huge area, and usually in areas where land tends to be expensive I think this is a particularly good point about their success, espe

> A supermarket takes up a huge area, and usually in areas where land tends to be expensive I think this is a particularly good point about their success, especially in London. In London, there aren't really many huge supermarkets (the closest one to me is about 5km away through dense built-up areas), and most people don't own cars. Hence, if you want to do a big shop, online delivery is pretty much the only way.