Which has named the UK's cheapest supermarket for September

Which reveals UK's cheapest supermarket and it's not what we were expecting

The retailer was still the most affordable even when taking into account loyalty promotions at other supermarkets such as Sainsbury's and Tesco

by · Birmingham Live

Which has revealed the UK's cheapest supermarket for September and it wasn't what we were expecting. Reports last month by Manchester Evening News suggested that Morrisons had taken the trophy as reporters at the newspaper had been comparing the price of essential groceries each week with other supermarkets for the past two-and-a-half years.

At the time Aldi disputed the results, claiming that it didn't account for quality and 'like-for-like' products. So, we went along and bought groceries from Aldi, Lidl and Morrisons to see how they matched up.

And we were surprised to find that, overall, Morrisons was cheapest for a basket of 'savers' bread, butter, tomato soup, bacon, baked beans and coffee. It came in at 18p cheaper than Aldi and 59p cheaper than Lidl.

Read more: I compared Morrisons with Aldi and Lidl to see which is cheapest and found a surprising winner

Read next: I ditched my Aldi shop to visit 'new cheapest supermarket' and can see what it's doing right

However a Which? report has announced that Aldi was the cheapest supermarket in September, even when loyalty promotions at bigger supermarkets were taken into account.

A spokesman for Which said: "We compared how much supermarkets charged for a selection of 59 groceries last month and found the total cost was £102.68 at Aldi – around 10 percent less than at Tesco and Sainsbury's, even when Clubcard and Nectar offers were included. An equivalent shop at rival discounter Lidl cost £1.18 more than at Aldi.

"Asda was also cheaper than Tesco or Sainsbury's, despite not offering member-only discounts. Waitrose was the most expensive supermarket, with an average price of £130.37 – 27 percent more than Aldi. But when we compared the cost of a bigger shopping list, Sainsbury's was the priciest supermarket for shoppers without a Nectar card."