<P> This is a list of supermarket chains in the United Kingdom . Grocery sales in the UK are dominated by Tesco, Asda, Sainsbury's and Morrisons . These, dubbed the' big four', had a combined market share of 73.2% of the UK grocery market in the 12 weeks ending 4 January 2015, a decline from 74.1% in 2007 . Discounters Aldi and Lidl have seen a combined rise in market share from 4.8% to 8.3% over that time, while upscale grocer Waitrose's share rose from 3.9% to 5.1% </P> <P> In early 2017, Tesco announced a deal to merge with Booker, the UK's largest wholesale food retailer, while Aldi became the 5th biggest supermarket . </P> <P> Premier Supermarkets, a subsidiary of Express Dairies, opened the UK's first supermarket in Streatham, South London in 1951, though The Co-operative Food opened Britain's first fully self - service store in March 1948 in Albert Road, Southsea . </P> <Table> <Tr> <Th> Supermarket </Th> <Th> Image </Th> <Th> Founded / came to UK </Th> <Th> Owned by </Th> <Th> August 2017 Market share </Th> <Th> February 2017 Market share </Th> <Th> 2015 Market share </Th> <Th> 2007 Market share </Th> <Th> 2000 Market share </Th> <Th> Number of stores </Th> <Th> Notes </Th> </Tr> <Tr> <Td> Aldi </Td> <Td> </Td> <Td> 1990 </Td> <Td> Aldi Süd GmbH </Td> <Td> 7.0 </Td> <Td> 6.2 </Td> <Td> 5.3 </Td> <Td> 2.6 </Td> <Td> 1.5 </Td> <Td> 560 </Td> <Td> No frills supermarket </Td> </Tr> <Tr> <Td> Asda </Td> <Td> </Td> <Td> 1949 </Td> <Td> Walmart through subsidiary Corinth Services Ltd </Td> <Td> 15.3 </Td> <Td> 15.6 </Td> <Td> 17.1 </Td> <Td> 16.6 </Td> <Td> 14.1 </Td> <Td> 603 </Td> <Td> Founded from the merger of Associated Dairies and the Asquith family owned Queens Supermarket, originally called ASDA Queens </Td> </Tr> <Tr> <Td> Booths </Td> <Td> </Td> <Td> 1847 </Td> <Td> Booth Family and staff </Td> <Td> </Td> <Td> </Td> <Td> - </Td> <Td> - </Td> <Td> - </Td> <Td> 28 </Td> <Td> Found in Lancashire, Cumbria, Yorkshire, and Cheshire . </Td> </Tr> <Tr> <Td> Budgens </Td> <Td> </Td> <Td> 1872 </Td> <Td> Booker Group </Td> <Td> </Td> <Td> </Td> <Td> 0.4 </Td> <Td> 0.4 </Td> <Td> 0.4 </Td> <Td> 190 </Td> <Td> Found in England and Wales, with stores up to 10,000 square feet (930 m) </Td> </Tr> <Tr> <Td> Co-op, * and Co-op Food or The Co-operative Food </Td> <Td> </Td> <Td> 1844 </Td> <Td> Various consumers' co-operatives </Td> <Td> 6.3 </Td> <Td> 6.0 </Td> <Td> 6.0 </Td> <Td> 4.4 </Td> <Td> 5.4 </Td> <Td> 4,022 </Td> <Td> Identities shared by about 20 retail co-operatives, including: <Ul> <Li> The Co-operative Group </Li> <Li> East of England Co-operative Society </Li> <Li> Midcounties Co-operative </Li> <Li> Central England Co-operative </Li> <Li> Scotmid </Li> </Ul> <P> See also: The Co-operative Group #List of corporate members </P> </Td> </Tr> <Tr> <Td> Farmfoods </Td> <Td> </Td> <Td> 1955 </Td> <Td> </Td> <Td> </Td> <Td> - </Td> <Td> 0.7 </Td> <Td> 0.5 </Td> <Td> - </Td> <Td> 320 </Td> <Td> - </Td> </Tr> <Tr> <Td> Fulton's Foods </Td> <Td> </Td> <Td> </Td> <Td> UK private company </Td> <Td> </Td> <Td> </Td> <Td> - </Td> <Td> - </Td> <Td> - </Td> <Td> 100 </Td> <Td> Small supermarket chain based in South Yorkshire with branches across the Midlands and North of England </Td> </Tr> <Tr> <Td> Heron Foods </Td> <Td> </Td> <Td> 1979 </Td> <Td> UK private company </Td> <Td> </Td> <Td> </Td> <Td> - </Td> <Td> - </Td> <Td> - </Td> <Td> 290 </Td> <Td> Primarily frozen foods; operates stores throughout the Midlands and the North in 2017 Cooltrader were rebranded as Heron foods, five years after being sold to that company . </Td> </Tr> <Tr> <Td> Iceland </Td> <Td> </Td> <Td> 1970 </Td> <Td> 2.1 </Td> <Td> 2.1 </Td> <Td> 2.3 </Td> <Td> 2.2 </Td> <Td> 1.6 </Td> <Td> 2.8 </Td> <Td> 850 </Td> <Td> First store opened at Oswestry, Shropshire in 1970 </Td> </Tr> <Tr> <Td> Lidl </Td> <Td> </Td> <Td> 1994 </Td> <Td> Lidl Stiftung & Co . KG </Td> <Td> 5.2 </Td> <Td> 4.5 </Td> <Td> 3.7 </Td> <Td> 2.2 </Td> <Td> 1.3 </Td> <Td> 630 </Td> <Td> No frills supermarket </Td> </Tr> <Tr> <Td> Marks & Spencer </Td> <Td> </Td> <Td> 1884 </Td> <Td> Publicly traded on the London Stock Exchange </Td> <Td> </Td> <Td> </Td> <Td> 3.8 </Td> <Td> 4.3 </Td> <Td> - </Td> <Td> 852 </Td> <Td> Clothing and food retailer </Td> </Tr> <Tr> <Td> Morrisons </Td> <Td> </Td> <Td> 1899 </Td> <Td> Publicly traded on the London Stock Exchange </Td> <Td> 10.4 </Td> <Td> 10.9 </Td> <Td> 10.9 </Td> <Td> 11.2 </Td> <Td> 4.9 </Td> <Td> 569 </Td> <Td> Fourth biggest supermarket in the UK </Td> </Tr> <Tr> <Td> Ocado </Td> <Td> </Td> <Td> 2002 </Td> <Td> Publicly traded on the London Stock Exchange </Td> <Td> 1.4 </Td> <Td> </Td> <Td> - </Td> <Td> - </Td> <Td> - </Td> <Td> 0 </Td> <Td> Online only, product supply partnership with Waitrose; outsourced branded delivery partnership with Morrisons </Td> </Tr> <Tr> <Td> Sainsbury's </Td> <Td> </Td> <Td> 1869 </Td> <Td> Publicly traded on the London Stock Exchange </Td> <Td> 15.8 </Td> <Td> 16.5 </Td> <Td> 16.9 </Td> <Td> 16.2 </Td> <Td> 17.9 </Td> <Td> 1,304 </Td> <Td> Superstores, as well as' Local' and' Central' sites </Td> </Tr> <Tr> <Td> Tesco </Td> <Td> </Td> <Td> 1919 </Td> <Td> Publicly traded on the London Stock Exchange </Td> <Td> 27.8 </Td> <Td> 28.1 </Td> <Td> 28.4 </Td> <Td> 31.6 </Td> <Td> 25.0 </Td> <Td> 3,493 (UK) </Td> <Td> Including Extra, Superstores, Metro,' Express and Homeplus outlets; UK's largest all - purpose retailer </Td> </Tr> <Tr> <Td> Waitrose </Td> <Td> </Td> <Td> 1904 </Td> <Td> John Lewis Partnership </Td> <Td> 5.1 </Td> <Td> 5.3 </Td> <Td> 5.1 </Td> <Td> 3.9 </Td> <Td> 2.7 </Td> <Td> 344 </Td> <Td> Waitrose has a variety of store styles, including: <Ul> <Li> Waitrose Stores </Li> <Li> Convenience Stores and Little Waitrose </Li> <Li> John Lewis Foodhall </Li> <Li> Food, Fashion & Home </Li> <Li> Food & Home </Li> <Li> Welcome Break outlets (motorway services) </Li> </Ul> </Td> </Tr> </Table>

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