Aldi has been recognized as the most budget-friendly supermarket of 2025 by consumer advocates at Which?. Which? monitors grocery prices daily and unveils the most economical stores monthly. Aldi clinched the title of the UK’s most budget-friendly supermarket for the fifth consecutive year by being the cheapest in ten out of 12 months in 2025.
In December, Aldi topped the list for a basket of 68 items, averaging £123.60 for the month. Lidl followed closely in second place, with an average cost of £123.70 for both Lidl Plus members and non-members in December. Last year, Lidl took the crown as the cheapest supermarket twice, in July and October, with just a 77p difference in average monthly prices compared to Aldi.
For the same 68 items, Asda averaged £134.89 in December, while Tesco Clubcard holders paid £135.84 or £139.12 without a Clubcard.
Sainsbury’s Nectar cardholders paid £141.45, or £143.74 without a Nectar card, while Waitrose stood out as the priciest supermarket for the 68-item list, costing £170.46 in December. Which? research indicated that Waitrose was on average 35% more expensive than Aldi throughout 2025. Larger grocery lists of 180 items excluded Aldi and Lidl due to their smaller product ranges. In December, Asda emerged as the cheapest for the larger list at an average of £450.82.
Tesco Clubcard holders spent £462 on average in December for the 180-item list, compared to £493.53 for non-Clubcard holders. Morrisons’ bill was £466.04 with a loyalty discount or £467.46 without. Sainsbury’s Nectar holders paid £468.61, while non-members paid £501.89. Waitrose remained the most expensive for the larger shop, with an average bill of £529.17.
Reena Sewraz, Which? Retail Editor, emphasized Aldi’s consistent affordability as the reason for being named the UK’s cheapest supermarket for the fifth consecutive year. She highlighted Asda as a good option for shoppers seeking a wide range of branded goods at lower prices. Sewraz advised consumers to shop around to potentially save hundreds of pounds annually on their food bills.
