Mirror. Sainsbury's said while it is asking everyone to continue "playing their part" in helping to keep everyone safe in store by following the rules, "our colleagues will not be responsible for enforcing them".Asda said it will "strongly encourage customers to wear a face covering", but added: "It is the responsibility of the relevant authorities to police and enforce the new rules."Posting on Twitter, Tesco said: "To help keep you and our colleagues safe in-store and reflect the latest government guidance, customers will be required to wear face coverings while shopping from Friday, 24 July.
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