Aldi is named Britain's cheapest supermarket for 12th month in a row by Which? trends now
Aldi was today named Britain's cheapest supermarket for the 12th month in a row - with an average basket of goods costing £18 more than Waitrose, experts said.
Consumer researchers at Which? regularly compare the average prices of a shop consisting of 40 popular groceries at eight of the UK's biggest supermarkets.
Aldi was cheapest at £68.60 on average across last month, while Lidl was just behind at £70.51 – a difference of £1.91, although the gap was up from 65p in April.
It said Aldi has remained the cheapest supermarket since May 2022. Waitrose was the most expensive - with a basket at £86.91, or 23.5 per cent more than Aldi.
Which? does not share the actual 40 items publicly to avoid supermarkets changing their pricing based on its analysis, but it describes the goods as 'popular groceries'.
The experts also compared the cost of a larger trolley of 131 items – the original 40, plus 91 more, which include a larger number of branded items, such as Andrex toilet paper and Cathedral City cheese.
For this wider analysis, Which? does not include Aldi and Lidl because these are discounter supermarkets which do not always stock some of these products.
This month, Asda was again the cheapest for the trolley of groceries - a title it has held since January 2020.
Last month it cost £332.40 on average for such a shop at Asda - beating Morrisons, which was the next cheapest at £334.47, by just £2.07.
Waitrose was £31.59 more expensive than Asda for the trolley, coming in at £363.99 on average, which was 9.5 per cent more.
Which? retail editor Ele Clark said today: 'The price of food and drink is continuing to soar, as people suffer through the worst cost of living crisis in decades.
Last month, the Office for National Statistics put food and drink price inflation at 19.1 per cent, which is potentially adding more than £800 to the cost of putting food on the table
'It's no surprise to see many shoppers turning to discounters like Aldi and Lidl when our research shows they could make savings of more than £18 on a basket of everyday groceries.'
She claimed that supermarkets were not doing enough to help shoppers, adding that they have a 'responsibility to ensure everyone has easy access to basic, affordable food ranges at a store near them'.
Ms Clark also said the major retailers needed to 'provide transparent and comparable pricing so people can easily work out which products offer the best value'.
Which? said its analysis showed that 'shoppers can make considerable savings on their
