The supermarket was found to be £37.51 cheaper than Waitrose for an equivalent shopping list of items, according to a consumer champion.
Which? compared the cost of groceries and household essentials at various supermarkets last month. Aldi was £26.30 cheaper than Morrisons and £15.80 cheaper than Asda.
The study looked at a set list of 72 items. The total cost at each supermarket is shown in the following table:
| Retailer | Average price for 72 items |
| Aldi | £125.43 |
| Lidl | £128.19 |
| Asda | £140.51 |
| Tesco | £143.51 |
| Sainsbury’s | £147.78 |
| Morrisons | £151.73 |
| Ocado | £153.47 |
| Waitrose | £162.94 |
Julie Ashfield, managing director of buying at Aldi, said: “Here at Aldi, we are proud to have maintained our position as the UK’s cheapest supermarket for the past three years.
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“We know that the ongoing cost-of-living crisis is bringing a lot of financial worries for consumers, and that’s why we’ve invested more in price cuts than ever before. We will continue to support customers by consistently offering them great quality products at the lowest possible prices.”
The supermarket lowered fruit and vegetable prices in February and also cut the price of some essential items in January.
Aldi was also recently crowned cheapest UK supermarket for a third year in a row by the consumer group.
Related: Best of the British aisles: The freshest supermarket offers
