| A-Z Sudbury Ltd | Wembley | 2012 |
| A-Z Superstore Ltd | Newcastle Upon Tyne | 2023 |
| A-Z Supplies UK Ltd | Ashford | 2024 |
| A-Z TEC Medical Limited | Folkestone | 2001 |
| A-Z Tech WE Love Gadget Ltd | Crawley | 2023 |
| A-Z Trade Europe Ltd | London | 2012 |
| A-Z Trading Card Shop Ltd | Mansfield | 2025 |
| A-Z Trading Ltd | Preston | 2018 |
| A-Z Truck Parts (SOT) Ltd | Stoke-On-Trent | 2007 |
| A-Z Tyre Ltd | London | 2020 |
| A-Z UKK Ltd | London | 2025 |
| A-Z Vehicle Dismantlers Limited | Carlisle | 2009 |
| A-Z WE Love Gadget Ltd | Havant | 2023 |
| A-Z With GOD Trading Ltd | Nottingham | 2025 |
| A-Zgoods Limited | London | 2024 |
| A-Zod Limited | Southall | 2025 |
| A-Zprodxtss Ltd | Leicester | 2025 |
| A. & a. Carpets Limited | Solihull | 1988 |
| A. & a. Straw Supplies Limited | Cliffe, Selby | 1994 |
| A. & B. Clement Limited | Dumfries | 1995 |
| A. & B. Kaye (Textiles) Limited | London | 1958 |
| A. & D. House Furnishers Limited | 4/5 Golden Square | 1979 |
| A. & G. Cairncross Limited | Dunfermline | 1974 |
| A. & G. Motor Engineers Limited | Elland | 1982 |
| A. & H. Developments Limited | Devon | 1984 |
| A. & J. Long Bros. Ltd. | Derry | 1998 |
| A. & J. Speelman Limited | London | 1975 |
| A. & J. Taylor Limited | | 1983 |
| A. & M. Barley Limited | Bognor Regis | 1951 |
| A. & P. Motors Limited | Southend-On-Sea | 1993 |
| A. & W.Pounds Limited | London | 1956 |
| A. a. MOT and Service Ltd | Rowley Regis | 2024 |
| A. a. Plumbing and Heating Supplies Limited | Stoke-On-Trent | 2008 |
| A. Ahad Mart Solutions Ltd | Ilford | 2025 |
| A. Ainsworth & Sons (Jewellers) Limited | Blackburn | 1958 |
| A. and B. Millar Limited | Grangemouth | 2004 |
| A. and Lakis Kebab Limited | Birmingham | 1998 |
| A. Armstrong and Sons Ltd | Nottingham | 2025 |
| A. B. Caravans Limited | Doncaster | 2002 |
| A. B. Touch-Ups Limited | Erdington | 2020 |
| A. Baird & Sons Limited | Hamilton | 2003 |
| A. Ball & SON Limited | Sheffield | 1972 |
| A. Bannatyne Butchers Limited | Renfrewshire | 2014 |
| A. Beckman Limited | London | 1958 |
| A. Bedser Limited | Claygate | 1975 |
| A. Berd Ltd | Greenford | 2013 |
| A. Burns (Manchester Meats) Limited | Preston | 2021 |
| A. C. Curd (Isleworth) Limited | Middlesex | 1985 |
| A. C. Golf Supplies Limited | South Shields | 2009 |
| A. Camacho, U.K. Limited | Great Cambourne | 2002 |
| A. Caulder & Co. Limited | Banton | 1998 |
| A. Clayton-Payne & Co Limited | Bournemouth | 2010 |
| A. Culpin & SON Limited | Spalding | 1996 |
| A. D. Bird Stainless Limited | Sheffield,S.Yorks | 1986 |
| A. D. Livingston & Sons Limited | Kirkcudbrightshire | 2004 |
| A. D. M. Digital Ltd | Manchester | 2007 |
| A. D. Melling Limited | Wirral | 2004 |
| A. D. Sutton Motor Engineers Ltd | March | 2009 |
| A. D. Williams Coach Works Limited | Brighton | 1986 |
| A. Danial Group Ltd | Slough | 2026 |
| A. Daniels (Electrical) Limited | | 1972 |
| A. Daniels Ltd | Ipswich | 2020 |
| A. Daniels Trading Ltd | Borehamwood | 2017 |
| A. Davies Autos Limited | Lancs | 2002 |
| A. Dewar Rattray Limited | Maybole | 1939 |
| A. Donald Limited | Glasgow | 1972 |
| A. E. Petsche UK Limited | Reading | 2011 |
| A. Elder Reed & Co. Limited | Chatham Maritime | 1927 |
| A. F. KIP Ltd | London | 2017 |
| A. Fanthorpe Limited | Hull | 2004 |
| A. Fleming Carpets Limited | Edinburgh | 1995 |
| A. Freeman (Precious Stones) Limited | London | 1944 |
| A. Frew (Haulage Contractors and Coal Merchants) Limited | Stevenston | 1964 |
| A. Fudge & Sons Limited | London | 1983 |
| A. Fulton Company Limited | Luton | 1955 |
| A. G. Prowse Limited | Truro | 2004 |
| A. G. Woodcare Products Limited | Bidford On Avon | 2003 |
| A. Gale Agencies Limited | North Petherton | 2002 |
| A. Glasz Limited | Orpington | 2016 |
| A. Gray & Sons Ltd. | Coatbridge | 2002 |
| A. Green Mechanics Limited | Ashford | 2012 |
| A. H. Coins Ltd | Burntwood | 2015 |
| A. Hanna & Sons Pianos Limited | London | 2003 |
| A. Hissey & SON Limited | Hanford | 1982 |
| A. Holt & Sons Limited | London | 1921 |
| A. Hugh Walker (Leeds) Limited | Beverley | 1938 |
| A. Hume (Outfitters) Limited | Kelso | 2007 |
| A. Hutchinson (Floor and Wall Supplies) Limited | Belfast | 1977 |
| A. I. a. a. Enterprise Ltd | Glasgow | 2022 |
| A. J Components Ltd | Northamptonshire | 1999 |
| A. J. D. OFF Road Limited | Hertford | 2010 |
| A. J. M. Autofixx. Ltd | Hereford | 2016 |
| A. J. Paveley & Co. Ltd | Birmingham | 2013 |
| A. J. Products (UK) Limited | Farnborough | 1999 |
| A. J. Reeves Ltd. | Swadlincote | 2000 |
| A. J. T'S. Ltd. | Ipswich | 2006 |
| A. J. Towey Services Limited | Stratford-Upon-Avon | 2005 |
| A. James (Jewellers) Limited | Saffron Walden | 1943 |
| A. Jones Electrical Services Ltd. | 191 West George Street | 1997 |
| A. K. Alarms Limited | Bedford | 2003 |