Some Marks & Spencer (M&S) stores have been left with empty food shelves as the retailer continues to struggle with a cyber attack affecting its operations.
Online orders have been paused on the company's website and app since Friday, following problems with contactless pay and Click & collect over the Easter weekend.
The BBC understands food availability should be back to normal by the end of the week.
Meanwhile, security experts say a cyber crime group calling itself DragonForce is behind the mayhem.
