Shoppers buying everyday essentials such as milk, bread and cheese at Tesco, Morrisons and Sainsbury’s could be paying more than they need to, according to the latest supermarket price comparison. A monthly price comparison by consumer group Which? has analysed thousands of products across eight of the UK’s biggest supermarkets.
The consumer group highlighted which supermarkets offer the cheapest groceries and where shoppers could end up paying more for their weekly essentials. The comparison looks at 87 everyday products, including food, drink and household essentials, at Aldi, Asda, Lidl, Morrisons, Ocado, Sainsbury’s, Tesco and Waitrose. While Aldi regularly comes out on top as the cheapest supermarket, the latest figures reveal how much shoppers could save by switching retailers or making use of loyalty card discounts.
Cheapest supermarket in October
Aldi was named the cheapest supermarket in October 2026, with the average cost of an 87-item shopping list coming to just £154.34. Lidl followed closely behind, with its Lidl Plus loyalty prices bringing the average bill to £157.17. Shoppers without a Lidl Plus account paid almost exactly the same, at £157.21.
Tesco came next, with its Clubcard prices proving cheaper than Sainsbury’s Nectar offers. The average shop at Tesco cost £181.77 using Clubcard discounts, compared with £182.90 at Sainsbury’s using Nectar prices.
Asda was slightly more expensive, with the average basket costing £183.47, while Morrisons shoppers faced an average bill of £186.77. However, shoppers who did not use loyalty schemes faced higher prices at Tesco and Sainsbury’s. Without Clubcard discounts, the Tesco shopping list cost £187.31, while the same basket at Sainsbury’s came to £191.56 without Nectar prices.
Waitrose was the most expensive supermarket in the comparison, with the 87 products costing an average of £215.87. Ocado was the second most expensive, at £202.33.
Tesco and Sainsbury’s shoppers warned over loyalty prices
The figures also highlight the difference loyalty schemes can make when shopping for everyday essentials. In October, 18 products included in the comparison had Clubcard discounts at Tesco, while 21 products had Nectar offers at Sainsbury’s.
Lidl had just one product on a loyalty discount during the analysis. This means shoppers could find themselves paying more for the same groceries if they do not take advantage of the available discounts.
However, the figures show that even with loyalty prices included, Aldi and Lidl remained considerably cheaper than the larger supermarket chains.
Aldi was cheapest supermarket in 2025
This is compared to supermarket prices in 2025, when thousands of grocery prices were checked every day. Aldi was crowned the cheapest supermarket for 10 out of the 12 months, making it the overall winner for the year.
A 70-item shopping basket cost an average of £120.46 at the German discount supermarket over the month. Lidl took the top spot twice, in July and October.
Across the year, its average monthly shopping bill was just 77p more expensive than Aldi’s. Waitrose, meanwhile, was the most expensive supermarket for the comparison shopping list in every month of 2025.
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