Marks & Spencer had been planning to open more than 200 of its stores on Boxing Day, but announced in late November that it was reversing this decision in light of the government guidelines.
At the time, M&S chief executive Steve Rowe said: "This Christmas, the celebrations we have will be more precious than ever."
He added that closing on Boxing Day was "a big decision, but it is absolutely the right one given the incredible effort everyone has made in the most challenging of circumstances".
Waitrose, John Lewis, Aldi, Wickes, Home Bargains, Homebase, Pets at Home and The Entertainer have also announced they will remain shut alongside B&Q – even though this is normally when Boxing Day sales begin.
Sales will still continue online however there maybe a delay on delivery.