Lidl has beaten Aldi to the title of cheapest supermarket of the month, knocking it from the top spot which it held for nearly two years.
Consumer group Which? said that Lidl was the cheapest supermarket for a shopping list of 76 items.
The study is conducted every month at eight of the UK's biggest supermarkets and Aldi had been the cheapest for the last 20 months in a row.
The list of 76 items included both branded and own-brand items, such as Birds Eye Peas, Hovis bread, milk and butter.
The analysis includes special offer prices and loyalty prices where applicable, but not multibuys.
