Asda:
The supermarket chain is is urging other people to stay away until 9am so the elderly and others who fall into the 'vulnerable' category and their carers can shop.
Asda has also confirmed that it will be prioritising NHS workers in larger stores every Monday, Wednesday and Friday from 8am to 9am.
Sainsbury:
From 8am to 9am every Monday, Wednesday and Friday Sainsbury's is only open for elderly and vulnerable shoppers.
From 7.30am to 8am from Monday to Saturday Sainsbury's is for NHS staff and social care workers only.
Tesco:
The priority shopping hour for vulnerable and elderly customers is every Monday, Wednesday and Friday between 9am and 10am.
NHS staff will be able to visit stores from 5am on Sundays to receive priority shopping time.
Morrison’s:
From 7am to 8am people working in the NHS will be able to enjoy priority shopping hours with the production of a valid ID.
Waitrose:
Waitrose shops will set aside a proportion of "hard-to-find and essential product" from every delivery that arrives into its supermarkets exclusively for NHS staff, on production of an NHS card.
Also from today, NHS staff will be given priority checkout service in the retailer's shops to ensure they are able to get through as quickly and easily as possible - through either dedicated NHS checkouts, opening up new tills for them as needed or moving to the front of the queue.
Co-Op:
From 8am to 9am Monday to Saturday and 10am to 11am on Sundays, elderly and vulnerable shoppers will be able to enjoy priority shopping hours.
Iceland:
The supermarket is offering priority to elderly and vulnerable customers in all 121 of their The Food Warehouse stores across the UK from 8am to 9am Monday to Saturday, and have encouraged the managers of all 855 Iceland stores to offer the same priority in the first hour of trading each day.
Iceland is also offering exclusive access to NHS workers in The Food Warehouse from 7am to 8am each day, and in Iceland stores for the last hour of trading each day.