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New analysis from consumer champion Which? has once again confirmed Aldi as the UK’s cheapest supermarket for May 2026, based on a basket of 95 popular grocery items.
Even after loyalty discounts were applied, shoppers would still have paid up to £30 less at Aldi than at Sainsbury’s (priced £198.79) and Tesco (£196.88). Morrisons was £29.20 steeper (£197.50), while Waitrose was a whopping £67.19 more than Aldi for the same basket at £235.49.
The result continues Aldi’s strong start to 2026, having topped the Which? rankings every month so far this year and building on its recognition as Cheapest Supermarket of the Year for 20251.
The retailer was also recently named Which?’s ‘Best Value Brand of the Year’, recognised for consistently delivering strong quality at low prices2.
Julie Ashfield, Chief Commercial Officer at Aldi UK, said: “Being named the UK’s cheapest supermarket once again by Which? is fantastic recognition of our unwavering commitment to offering customers the very best value. At Aldi, we know how important it is for shoppers to make their money go further, especially as we head into the summer months. Our low prices mean shoppers can enjoy great quality food without overspending.”
The full May results are below:
| Retailer | Average price for 95 items |
| Aldi | £168.30 |
| Lidl (inc loyalty discount) | £170.58 |
| Lidl | £170.66 |
| Asda | £192.58 |
| Tesco (incl. Clubcard) | £196.88 |
| Morrisons | £197.50 |
| Sainsbury’s (including Nectar) | £198.79 |
| Tesco | £202.27 |
| Sainsbury’s | £206.18 |
| Ocado | £217.86 |
| Waitrose | £235.49 |
-ENDS-
Aldi, Britain’s biggest discounter, has made the first delivery from its new Distribution Centre at Bardon in Leicestershire, marking the start of the first phase of operations at the UK’s largest supermarket warehouse.
Aldi has announced a £5 billion investment in British farming and food production through a series of long-term agreements with UK suppliers.
The supermarket said the deals will give farmers and producers greater certainty to invest in their businesses while helping strengthen British food supply chains.
The agreements, which typically last at least two years, cover fresh fruit and veg, dairy, meat and eggs, with Aldi aiming to source 50% of its domestic produce through long-term agreements by the end of 2027.
