Sainsbury's shoppers who visit store without Nectar card issued £456 warning

According to the latest analysis from consumer website Which?, a shopping list of 100 popular grocery items in January cost an average of £214.04 at Sainsbury’s for those using their Nectar card.
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Sainsbury's shoppers with a Nectar card have been issued a £338 warning. According to the latest analysis from consumer website Which?, a shopping list of 100 popular grocery items in January cost an average of £214.04 at Sainsbury’s for those using their Nectar card.

Sainsbury's shoppers paid £233 without a Nectar card - which means they are losing £38 a shop to Aldi shoppers. Over a 12-month year, it means Sainsbury's customers risk losing out on £456 by picking the wrong supermarket to shop at, according to Which?.

The consumer body warned: "Aldi was the cheapest supermarket in January 2025, charging £185.83 on average for our shopping list of 100 branded and own-label groceries. Fellow discounter Lidl was hot on its heels, at 76p more if you have its Lidl Plus loyalty app (£186.59), or 79p more if not (£186.62).

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"Asda, which doesn't offer loyalty discounts in the same way, was the cheapest of the traditional supermarkets – our shopping cost £204.90. Waitrose was the most expensive supermarket at £242.91 – just over £57 more than Aldi."

Which also compared the average cost of a larger selection of 210 items – the original 100 plus 110 more. "We were unable to include Aldi and Lidl in this price comparison as our bigger shop has a wider selection of branded items, which were unavailable at the discounters," they said.

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"Asda was the cheapest, with the total cost averaging £518.90. Tesco with Clubcard was the second cheapest at £529.01." Waitrose was the priciest supermarket again (£592.34) - our shopping cost 14% more there than at Asda.

Aldi was recently named Which? Cheapest Supermarket of the Year for four years running. A spokesperson for the retailer said: “Our promise to customers is that they will make significant savings every time they shop with Aldi.”