We wear FFP3 at work. Considering we have among other service users, IV drug users who are never going to stick to Covid rules and we have been around them every day for two years and we have only had I think two staff infected, I can say with some confidence that masks do work. I travel on the...
I shop in a few different markets on various days. Estimated mask wearing in percentages;
Lidl - 85%
Asda - 98%
Tesco - 95%
Waitrose - 80%
Local shops, greengrocer, massage parlour, butcher, fishmonger etc - 100%