ASDA coughing ban – at odds with latest government Covid-19 guidelines?

ASDA are telling their customers not to enter their stores if they have a continuous cough.  
























https://www.asda.com/feeding-the-nation
However, the latest government guidelines advise that: 
You do not need to self-isolate if you just have a cough after seven days. A cough can last for several weeks after the infection has gone.


























https://www.nhs.uk/conditions/coronavirus-covid-19/self-isolation-advice/
This effectively means that a potential customer who has recovered from the illness...