| A.T.Marston & Co.,Limited | Stoke On Trent | 1949 |
| A.T.S. Auto's Ltd | Canterbury | 2001 |
| A.T.S. Electro-Lube (UK) Limited | Gateshead | 1992 |
| A.T.S.Uk Private Limited | Rotherham | 2017 |
| A.T.V.'s "R" US Ltd | Somerset | 2000 |
| A.T.Watkinson Limited | London | 1962 |
| A.Taylor & Son(Builders & Decorators)Limited | 38 York Place | 1963 |
| A.Tech International Ltd | Manchester | 2022 |
| A.Tzanakakis (the Mitos) Ltd | London | 2017 |
| A.U Globals Limited | Birmingham | 2025 |
| A.U Manchester Limited | Manchester | 2021 |
| A.U Traders International Ltd | Ilford | 2017 |
| A.U. Mert Ltd | London | 2011 |
| A.U.E Trading Co Ltd | London | 2019 |
| A.U.L.M. Limited | Glasgow | 2010 |
| A.U.T. (Wheels and Castors) Co. Ltd. | Mossley | 1980 |
| A.V Kakkar Wholesale Limited | London | 2023 |
| A.V Service Ltd | London | 2023 |
| A.V. and B.V. Andrews Limited | Southend-On-Sea | 1975 |
| A.V. Garage Ltd | Kettering | 2025 |
| A.V. Robertson Limited | Manchester | 2016 |
| A.V.A Auto Body Ltd | Bradford | 2026 |
| A.V.Fowlds & Sons Limited | Harrow | 1933 |
| A.V.I.S. (N.I.) Ltd | Conlig, | 1985 |
| A.V.P Automotive UK Limited | Greenford | 2000 |
| A.V.R. Fixings Ltd. | Northampton | 1989 |
| A.V.Taylor Limited | | 1972 |
| A.Vogel Limited | Irvine | 1986 |
| A.W Bodyworks Limited | Hull | 2020 |
| A.W Service Centre Ltd | Stowmarket | 2022 |
| A.W. & D. Hammond Limited | Suffolk | 1970 |
| A.W. & E. Ramsden Limited | Leeds | 1973 |
| A.W. Cavanagh (Spitalfields) Limited | London | 1986 |
| A.W. Herd & Sons Limited | Aberdeen | 1949 |
| A.W. Lashford & SON Limited | Whitefield | 1990 |
| A.W. Salton (Cartec) Ltd | Benfleet | 2011 |
| A.W. Vollans & SON Limited | Howden | 1975 |
| A.W.Adcock & Sons Limited | | 1954 |
| A.W.Champion Limited | New Malden | 1953 |
| A.W.D.Dwight & Sons(Engineers)Limited | Harlow | 1964 |
| A.W.Giles (Plastering Contractors) Limited | Hants | 1989 |
| A.W.Harman Limited | Surrey | 1959 |
| A.W.Lumb & Co.Limited | London | 1964 |
| A.W.M Traders Ltd | London | 2026 |
| A.W.M.D. Limited | Melrose | 2004 |
| A.W.Midgley & SON Limited | Cheddar | 1952 |
| A.W.Moss & Son(Civil & Railway Engineering)Limited | Tankersley | 1969 |
| A.W.Page(Upholsterers)Limited | Ongar | 1956 |
| A.W.Porter & SON Limited | Hook | 2008 |
| A.W.R. Alloy Wheel Refurbishment Ltd | Stockton-On-Tees | 2019 |
| A.W.Sinclair & Sons Limited | Leeds | 1931 |
| A.W.Smith(Gosport)Limited | Hants | 1964 |
| A.W.T. Greatrex Limited | Sutton Coldfield | 1965 |
| A.W.Thompson(Electrical)Limited | Near Rotherham | 1946 |
| A.Walker (Allendale) Limited | Hexham | 1957 |
| A.Watts & Sons Limited | Northampton | 1928 |
| A.Williams & Co.(Cheltenham)Limited | | 1954 |
| A.Wilson & Sons(Transport)Limited | Leicester | 1971 |
| A.Winston & Sons Ltd | Glasgow | 2013 |
| A.Y Beauty Ltd | Manchester | 2021 |
| A.Y Watercoolers Limited | Leicester | 2017 |
| A.Y. Group Limited | Nottingham | 2016 |
| A.Y. Traders Ltd | Manchester | 2010 |
| A.Y.A Car Sales Ltd | Tipton | 2022 |
| A.Y.A Cars Ltd | Birmingham | 2019 |
| A.Y.Morton and Company Limited | Strathaven | 1975 |
| A.Y.S Healthcare Ltd | Greenford | 2021 |
| A.Z Penn Ltd | Birmingham | 2024 |
| A.Z's MOT & Service Centre Limited | Leicester | 2012 |
| A.Z2 Limited | Birmingham | 2025 |
| A.Zyan Ltd | Greenhithe | 2024 |
| A/S Watersports Ltd. | Exeter | 1992 |
| A/Z Frozen Foods Ltd | Liverpool | 2014 |
| A03 Mechanic Ltd | Birmingham | 2024 |
| A1 (Sussex) Limited | Uckfield | 1999 |
| A1 4X4 Breakers Limited | Chorley | 2021 |
| A1 Adas Solutions Limited | Skelmersdale | 2021 |
| A1 Aggregates (Hartlepool) Ltd | Hartlepool | 2021 |
| A1 Aggregates Limited | Wimborne | 2022 |
| A1 Airsoft Ltd | Stone | 2025 |
| A1 Airworks Limited | Welwyn | 1998 |
| A1 Alignment Limited | London | 2017 |
| A1 ALL Cars Limited | Leeds | 2006 |
| A1 Alloys Ltd | Biggin Hill | 2005 |
| A1 Apparels Ltd | London | 2018 |
| A1 Associates Ltd | London | 2018 |
| A1 Audio Ashford Limited | Ashford | 2017 |
| A1 Auto & Tyre Service Ltd | Birmingham | 2025 |
| A1 Auto Center Ltd | Barking | 2020 |
| A1 Auto Claims Ltd | Glasgow | 2020 |
| A1 Auto Design Limited | Luton | 2022 |
| A1 Auto Electrical Services Ltd | Aldershot | 2024 |
| A1 Auto Exchange Ltd | Knottingley | 2025 |
| A1 Auto Garage Ltd | Ashton-Under-Lyne | 2018 |
| A1 Auto Hub Ltd | Leigh | 2025 |
| A1 Auto Locksmiths Limited | Chesterfield | 2025 |
| A1 Auto Repair Center Limited | Liverpool | 2013 |
| A1 Auto Repairs Ltd | Leicester | 2023 |
| A1 Auto Sales Ltd | Oldham | 2024 |
| A1 Auto Services Limited | | 2003 |