The supermarket giant has taken the unusual step of posting an email in which CEO Giles Hurley asked people to think of each other and not take risks on Covid during the holiday season when shopping.
Hurley said restrictions were being imposed for the benefit of staff and customers, the Manchester Evening News reported.
“As we head into the holiday season, I want to personally thank you for your continued support,” he said in an email.
“Working together, we have continued to make changes to protect you and our colleagues, who have worked tirelessly to ensure that all of our customers can get everything they need from Aldi. “
The email went on to outline new guidelines that will make masks mandatory in Aldi stores.
He said: ‘I am writing to you today to reassure you that following the latest government guidelines, masks are once again mandatory in all of our stores across the UK unless you have a medical exemption.
“We ask all customers to be responsible and follow these tips when shopping with us. Our Aldi colleagues will also do their part by wearing masks, as they have been doing throughout this year. “
Aldi’s boss also explained the measures stores have put in place to help limit the spread of Covid.
“Plus, all of the comprehensive security measures you’ll be accustomed to seeing in-store will continue to be in place,” he said.
“We have protective screens in all of our 7,000 cases. All stores have disinfection stations for customer use. There are clear signs reminding customers to wear a face covering and shop responsibly.
“We have set up separate entrances and exits. We encourage card or contactless payment where possible, with a contactless limit increased by £ 100. “
At the same time, the email specified the opening hours: “The majority of our stores are open from 8 am to 10 pm every day (Sunday 10 am to 4 pm) and our wonderful colleagues are on hand to help you. shop safely and find everything you need.
Giles added: “As we prepare for Christmas, I hope you, your friends and family are well, and we look forward to seeing you at Aldi over the next few weeks. “
The supermarket sent the email at the same time the government stepped in to increase Covid restrictions following the potential threat posed by the new Omicron variant.