Our local Tesco had constant tannoy announcements and signs saying that customers had to shop alone where possible during the second lockdown. Plus a member of staff on the door to supposedly enforce the rule. They did nothing at all and, as a result, 75% of customers were shopping in pairs or in families with both adults present. Appreciate some had a genuine need to have a helper or their kids but Tesco had zero interest in enforcing their own rule.
So, I won't be wearing a mask at Tesco from Monday. I've been vaccinated which reduces my risk of transmitting Covid substantially. I am not convinced that our mask hygiene (mine included) is that effective at stopping transmission. Most adults have been offered vaccinations and mask wearing is a small step on the road to getting back to some semblance of normality. I understand if others feel they want to wear their masks.