If customers in supermarkets are having to wear a face mask then all the supermarket staff including the staff on the tills should also have to wear a mask.
However I hark back to the discussion I had with the Public Health Scotland doctor last October after she told me that my Covid-19 was negative.
I said to her that the wearing of face masks was a waste of time as it is not stopping the spread of the Covid-19 virus. She replied stating “We know that and that is why we also advise everyone to also wash their hands”.
One thing is certain. The wearing of face masks is not making a jot of difference stopping the spread of the Covid-19 virus throughout the U.K. and the rest of Europe.