Aldi has once again been crowned as the cheapest supermarket by Which? consumer experts. The monthly comparison of supermarket prices conducted by Which? aims to identify the best value grocer for shoppers.

In its March 2025 review, a shopping list of 79 items at Aldi cost an average of £133.73 - this was 67p cheaper than rival Lidl, including its Lidl Plus loyalty app. The same shopping list cost £134.40 with Lidl Plus, or £134.43 without.

Tesco was next cheapest but only for shoppers with a Clubcard, where a shop came to £146.79 on average, or £149.83 without a Clubcard, reports the Mirror.

The average bill at Asda came to £147.09, so more expensive than if you have a Tesco Clubcard, but cheaper than shoppers without a Tesco Clubcard. Waitrose was the most expensive supermarket for the list of 79 items in March 2025, with the typical bill coming to £176.41 - a difference of £42.68 compared to Aldi.

The list of 79 items included both branded and own-brand items, such as Birds Eye Peas, Hovis bread, milk and butter. Meanwhile, Asda held on to the top spot for a bigger list of 203 grocery items. Asda came out cheapest at £498, beating Tesco with a Clubcard, where it cost £503.03.