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Markets

Aldi named cheapest UK supermarket in September for 71-item basket

Published 4 October 2025

Aldi was named the cheapest UK supermarket in September after a consumer group’s monthly price comparison found a basket of 71 popular grocery items at the discount chain cost an average of £122.77, narrowly undercutting Lidl by £1.18. The analysis, published this week, compared the cost of the same 71-item shop across major supermarkets and included special offer and loyalty prices where applicable.

The ranking placed Lidl second at £123.95. Tesco ranked third for shoppers using a Clubcard, with the 71-item basket costing £135.64; the same shop at Tesco without a Clubcard averaged £138.66. Sainsbury’s Nectar members paid an average of £138.74, and Morrisons’ More card and non-card shoppers were both around £140. Waitrose was the most expensive for the smaller basket, at £167.19.

Which? also runs a separate comparison using a longer list of 186 items. That larger basket excludes Aldi and Lidl because of their smaller product ranges. In that analysis Asda was the cheapest, with an average bill of £465.66, followed by Tesco with a Clubcard at £472.45. Waitrose again topped the list for the larger shop, averaging £531.39.

The 71-item sample included a mix of branded and own-brand...

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