List of supermarket chains in the United Kingdom

Tesco is the largest supermarket chain in the United Kingdom.

As of May 2024, there are 17 supermarket chains currently operating in the United Kingdom. The food retail market has been dominated by the 'big four' supermarkets – Tesco, Sainsbury's, Asda and Morrisons – who made up over three quarters of sector market share in 2010. Tesco is the largest retailer in Great Britain, with a market share of 27.5% at the end of 2022.[a][1]

However, discounters Lidl and Aldi have grown rapidly.[1] A number of sources reported that in September 2022, Aldi overtook Morrisons to become Great Britain's fourth largest grocery retailer.[1][2] At the end of 2022, Morrisons and Aldi both remained at 9.1%.[b][1] Collectively, the big four accounted for two thirds and the big four and discounters combined for four fifths of the grocery market share at the end of 2022.[c][1]

Northern Ireland has similar major chains. In 2022, Tesco was the largest retailer in NI, followed by Sainsbury's, Asda and Lidl.[3] However, the market is different because some chains are not shared between the different parts of the UK. For example, Aldi and Morrisons do not operate there.[4]


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  1. ^ a b c d e "Big four line-up changes as UK grocery price inflation accelerates again". www.kantar.com. Retrieved 5 January 2023.
  2. ^ "Aldi becomes Britain's fourth-largest supermarket". BBC News. 13 September 2022. Retrieved 5 January 2023.
  3. ^ McDonald, Gary (18 October 2022). "Northern Ireland's grocery market down by 3 per cent as prices continue to soar". The Irish News. Retrieved 5 January 2023.
  4. ^ McAleer, Ryan (28 September 2021). "No sign of Aldi changing policy on Northern Ireland". The Irish News. Retrieved 5 January 2023.