Yes Hugo, I’ve been in twice this week to Asda, I’d say that adherence to the law, (because it IS the law) is around 55 to 60%.
The hapless Security chap doesn’t seem interested, two police officers who were dealing with a teenage miscreant didn’t even glance at the maskless face walking in.
It’s completely unenforceable, and I’ve now realised that the only person getting wound up about it is me.