I know several of us are worried about covid-19 and in the case of shops when selling deliveries. I have just signed up for alerts about the situation on Royal Mail and areas etc.
The info linkis here: https://personal.help.royalmail.com/app/answers/detail/a_id/12556/~/service-update
If you click on Service Update emails you can sign up to be kept informed. I did it as a business as not sure personal covers the whole of the UK.