Overall, out of stock levels peaked at 23.1% last Tuesday, but subsided to 18.4% by the end of the week. Restrictions introduced by grocers to ease stockpiling will have helped.

Last week, Tesco introduced an 80-item maximum for online deliveries in addition to its three-item limit on all individual items.

All grocers now have customer restrictions on how many of each item can be bought in-store and online, which has helped to bring stock back under control amid the unprecedented demand.