
The discounter was just 34p cheaper than its nearest rival Aldi for our trolley of 45 branded and own-label groceries. Lidl was the cheapest supermarket in 2020.


Lidl came top for five months and, for one month, the two discounters were tied.Īt the other end of the scale, Waitrose was most expensive each month. It won the 'cheapest supermarket of the month' title six times that year – more than any other supermarket. Which supermarket was cheapest in 2021?Īccording to our research, Aldi was the cheapest supermarket in 2021. Lidl wasn't far behind, coming out cheapest in the first five months of the year.Īcross the seven months that Aldi was the 'cheapest supermarket of the month', the average difference was £1.59 compared with Lidl.Īsda was the cheapest of the non-discounters, coming out on top every month across 2022. The discounter was the cheapest in our analysis for seven out of 12 months in 2022, which was more than any other supermarket. Find out more: best and worst supermarketsĪs well as analysing prices each month, we do a whole-year look each January – and, according to our analysis, Aldi was the cheapest supermarket in 2022.This means the totals aren't comparable between months or years. We rotate the products in the trolley to ensure we're comparing as many branded products as possible.
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Most of this is based on online prices, but for Aldi and Lidl (which don't sell their full ranges online) we send fieldworkers out to stores to see how much each item costs each day. Our data is supplied by an independent price comparison company. The contents vary from month to month and might include anything from Andrex toilet paper and Lurpak butter to own-label bread and Heinz baked beans. We include special offers, but not multibuys. We then add those averages up to get a trolley total for each retailer. We track the prices of up to 200 branded and own-label products every day over the course of a month to work out the average cost per item. How we work out which is the cheapest supermarket You can read more about our research further down the page, or by clicking here. It's worth mentioning that our analysis includes discounts that are available to everyone, but not multibuys or loyalty prices (where you only get the discount if you're a member of the supermarket's loyalty scheme).

When it came to the 'big four' supermarkets, our comparison revealed that Asda was the cheapest for our basket at £75.42. The same basket of 39 items at Waitrose would have set you back an average of £84.37 - that's 25% pricier on average than Aldi. September 2023Īldi was the cheapest supermarket in September, with our shop costing £67.72, beating discounter rival Lidl by £1.24. In our analysis of a bigger trolley of goods, which we don't include Aldi or Lidl in due to range limitations, Asda has been cheapest every month but one.įind out the latest results below (links take you to supermarkets' websites). Which supermarket is cheapest so far in 2023?Įvery month, we compare thousands of prices at the UK's eight biggest supermarkets – Aldi, Asda, Lidl, Morrisons, Ocado, Sainsbury’s, Tesco and Waitrose – to reveal the cheapest place to buy your groceries and household essentials.Īldi has been the cheapest supermarket every month so far this year for a basket of groceries.
