I would imagine all of the above, though it is by no means restricted to any one group.
Also I guess you ware watching a maybe older and/or more affluent group at Waitrose. And people going out to work v. people not going out much seem significant to me.
Actually that last one seems potentially significant to me. I know a number of people who have gone to the office or their "out in the community" jobs throughout it, and by and large they are much more confident (almost appearing reckless in some cases) than those of us who have hunkered down for the duration.
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