I don't know if people are just twats or complete imbeciles.
Some still spectacularly fail to understand that the whole point of everything is to do something about Covid19. So trying to squeeze out everything they can get that hasn't been banned yet is just stupid.
You should prioritise to isolate as much as possible, and minimise your own impact as much as you can. So yes, it's not forbidden to buy clothes and make up. Realistically, is it necessary to crowd the delivery system until all deliveries are banned like they are abroad?
Yes, you should try to stay home as much as possible. Not going out all day or leaving your kids run riot in your cul de sac because Boris didn't tell you you couldn't. Of course, take the kids out, go for a run, but minimise it.
Burning shit in your garden or just making fires there is not even illegal, but when people are fighting for breath, why would you even want to?
The more people act selfishly and stupidly, the longer it will take to go back to normal. China "seems" to improve, but they have been so much stricter and it seems to work. So why don't we do it too?