Lidl has been crowned the cheapest supermarket in the UK for the fifth consecutive month in a row.
The budget grocer took the top spot for April in the monthly Which? supermarket price comparison.
Which? found Lidl shoppers paid £25.92 for a basket of everyday grocery items last month, compared to £26.66 at Aldi.
Asda came in third place, where a basket cost £28.46, followed by Sainsbury's where the price was £30.73 in April.
A basket of everyday essentials cost £30.75 at Ocado, £31.01 at Tesco and £31.19 at Morrisons.
Waitrose was the most expensive supermarket last month, coming in at £35.06.
Which? compared prices for a trolley of 18 everyday grocery items from throughout April, including staples such as bread and butter.
The consumer champion also compared a trolley of 63 grocery items, including a greater selection of branded items such as Cathedral City cheese and Twinings tea bags, that aren’t always available in the discounter supermarkets.
For this reason, Aldi and Lidl aren't included in the bigger shop roundup.
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Asda took first place, costing £132.81 in April, followed by Sainsbury's with a price tag of £138.58 and Morrisons where it cost £139.65.
In fourth place for the big shop was Tesco, where shoppers would've spent £145.92, Ocado on £147.35 and Waitrose on £149.82.
Reena Sewraz, Which? money expert, said: “With household bills and food prices going up, it’s no surprise that budget supermarkets have seen an increase in footfall recently and we've found you can buy many of the same groceries for a much better price than at one of the 'big four' supermarkets.
“As well as shopping around, our advice to save on your food shop is to stick to a budget, have a list of what you need and reach for the value ranges to help your money stretch further."
Ryan McDonnell, Lidl GB CEO, said: “Lidl’s mission is to provide shoppers with the best quality products at the lowest price, every day of the year.
“We are pleased that Which? has recognised this for the 4th consecutive month, meaning that, despite all the noise, no other retailer has beaten us on price this year.
“We understand that consumers want value for money especially now and we can promise our customers that Lidl offers the best in the market.”
It comes as researchers at Kantar warned the average food bill could rise by £271 this year as the cost of living crisis continues.
Kantar suggests grocery prices were 5.9% higher in April than a year ago - marking the biggest increase since December 2011.
