A new study has revealed what the UK’s cheapest supermarket is

The results might surprise you...

With Christmas just around the corner there’s no better time to try and save as much as you can on grocery shopping. And if you've ever wondered what the UK's cheapest supermarket is, you're in luck.

Price tracking website Alertr.co.uk has been monitoring the cost of various like-for-like items across all seven retailers, to try and find out which one is the cheapest supermarket.

They tracked 43 items from the shopping basket on the Office for National Statistics’ Consumer Price Index over a six week period. Items included home-brand loaf of white bread, cereals, rice, chicken, mince, eggs, cheese, milk, potatoes, fruit juice, sugar, wine and beer.

They discovered that – drum roll please – ASDA was consistently the cheapest supermarket out of the bunch, coming in at an average total of £127.70 for essential items, including the ones listed above.

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Sainsbury’s came in second place, averaging £133.49. During one of the six weeks, they came out on top ahead of Asda.

Iceland and Morrisons took fourth and fifth place, averaging £135.46 and £138.39 respectively.

Surprisingly, Waitrose was found to be cheaper than Tesco on average, with a weekly shop costing £142.25. Tesco came in slightly more expensive at £145.03.

The most expensive supermarket on average was Ocado, with an average weekly shop costing £148.81.

cheapest supermarket

Credit: Getty Images

Alertr used own-brand items or equivalents to give an unbiased comparison of groceries unless it was a well-known brand that all seven supermarkets stocked (like Coca-Cola).

If you’re looking for a cheap place to buy Campo Viejo Rioja Tempranillo red wine, they discovered that Morrisons took the crown for that one, with their bottle costing just £6.50 compared to Ocado’s £8.

Overall, Asda was the cheapest supermarket for a lot of things, hence why it was determined to be the best value weekly shop. They found that Asda is the cheapest supermarket to buy vodka (£13), beef (£2.97), chicken (£3.60), teabags (£4.50), jam (£1.00), potatoes (£1.20) and gin (£13).

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This helped to drive the price down, considering Asda is the most expensive place to buy butter (£1.80) and coffee (£6.99) compared to the other stores.

Alertr.co.uk’s co-founder Andy Barr commented on these findings, noting that sometimes we can assume supermarkets are more expensive.

He said, “When we started monitoring the items that we’d selected from the government CPI shopping basket, we didn’t expect ASDA to be the cheapest for five out of six weeks running, or even for Sainsbury’s to come in as the second cheapest supermarket, especially when you consider brands such as Iceland, that are more known for their ‘budget’ price tags, were also included.

“Perhaps shoppers need to set aside their preconceptions of supermarkets now, because they may well be missing out on bargains by going to stores that they assume would be cheapest!”