| AD Williams Enfield Limited | Brighton | 2020 |
| AD Williams Express Heathrow Limited | Brighton | 2017 |
| AD Williams Express Limited | Brighton | 2016 |
| AD Williams Farnham Limited | Brighton | 2019 |
| AD Williams High Wycombe Limited | Brighton | 1974 |
| AD Williams Lydd Ltd | Birmingham | 1999 |
| AD Williams Southampton Limited | Birmingham | 2018 |
| AD Williams Wimbledon Limited | Brighton | 2014 |
| AD Williams Worthing Limited | Brighton | 2015 |
| AD World IT Ltd | Basildon | 2010 |
| AD World Ltd | Essex | 2025 |
| Ad&K Retail Ltd | Horley | 2026 |
| Ad's Cuddle Ltd | Northolt | 2025 |
| Ad-Ag-Family Limited | London | 2022 |
| Ad-Craftmarketing Ltd | Swindon | 2025 |
| Ad-Creations Hub Ltd | Milton Keynes | 2024 |
| Ad-Ditive Biogas Products Limited | Bedford | 2020 |
| Ad-Libertas Publishing Limited | Basingstoke | 2017 |
| Ad-Purely Ltd | Colchester | 2025 |
| Ad-Royce Limited | London | 2010 |
| Ad-Tps Limited | Sale Moor | 2014 |
| Ad-Wise World Ltd | Sutton | 2020 |
| Ad.Pharma Cover Limited | Walsall | 2025 |
| AD1977 Limited | Glasgow | 2016 |
| AD25 Ltd | Southall | 2025 |
| AD2AJ Limited | Swanscombe | 2021 |
| AD79 Drinks Limited | Wigan | 2025 |
| AD94 Ltd | Ashington | 2026 |
| ADA & ADA Ltd | London | 2019 |
| ADA & Albert | London | 2018 |
| ADA & Albert Trading Limited | Chislehurst | 2020 |
| ADA & INA Limited | Canterbury | 2012 |
| ADA (Hudds) Ltd | Huddersfield | 2019 |
| ADA - March Connect Ltd. | Waltham Cross | 1994 |
| ADA Apparel Ltd | London | 2023 |
| ADA Auto Ltd | London | 2025 |
| ADA Autocare Ltd | Northampton | 2024 |
| ADA Automotive Ltd | Fakenham | 2016 |
| ADA Baby Limited | Bury St. Edmunds | 2021 |
| ADA Card Limited | Cambridge | 2022 |
| ADA Cars and Parts Ltd | Sutton-In-Ashfield | 2023 |
| ADA City Group Ltd | London | 2024 |
| ADA Cosmetics International Ltd | Bedford | 1993 |
| ADA Dakin Limited | Wirral | 2019 |
| ADA Digital World Limited | London | 2019 |
| ADA Elroi Ltd | London | 2026 |
| ADA Enterprises Inc Ltd | Dagenham | 2024 |
| ADA Express Ltd | Birmingham | 2025 |
| ADA Fashion Ltd | Wigan | 2023 |
| ADA Fide-Hakan Akkoc Ltd | London | 2025 |
| ADA Hand Car Wash Ltd | Poole | 2024 |
| ADA Lillys Florist Ltd | Liverpool | 2023 |
| ADA London Trading Limited | Chessington | 2023 |
| ADA Motors UK Limited | Newcastle Upon Tyne | 2024 |
| ADA Parmar Ltd | Solihull | 2024 |
| ADA Pharma Limited | London | 2023 |
| ADA Powers Ltd | Basildon | 2021 |
| ADA RAE Limited | Dudley | 2025 |
| ADA Retail (Berwick Hills) Ltd | Middlesbrough | 2021 |
| ADA Retail Limited | Hartlepool | 2013 |
| ADA Special Limited | Hampton | 2023 |
| ADA Store Limited | London | 2025 |
| ADA Supermarket Ltd | Wisbech | 2019 |
| ADA Supplier Limited | Haverhill | 2025 |
| ADA Trading Ltd | Stanmore | 2025 |
| ADA Wear Ltd | Manchester | 2020 |
| ADA Web (UK) Limited | London | 2022 |
| Adaa Auto Limited | Sevenoaks | 2025 |
| Adaa Management Consultancy Ltd | Harrogate | 2024 |
| Adaa Trading Ltd | Manchester | 2021 |
| Adaab Fashion Limited | London | 2019 |
| Adaab Group Ltd | Birmingham | 2025 |
| Adaab.Gifts Ltd | Normanton | 2023 |
| Adaam Traders Ltd | Pudsey | 2024 |
| Adaan Limited | London | 2007 |
| Adabailey Ltd | London | 2026 |
| Adabra Ltd | Reading | 2025 |
| Adacar Ltd | Altrincham | 2012 |
| Adacik Trading Limited | London | 2024 |
| Adad Co Ltd | Polegate | 2026 |
| Adado General Supplies Ltd | London | 2017 |
| Adaeso Herbal Centre Limited | Oldbury | 2025 |
| Adaf Group Ltd | Peppercorn Close, | 2025 |
| Adafert Tarim Kimya Sanayi Lojistik VE DIS Ticaret Limited | London | 2025 |
| Adage Dance Ltd | Leeds | 2015 |
| Adage Ltd | London | 2020 |
| Adage Retail Ltd | Smethwick | 2016 |
| Adagio Gift Stores Limited | London | 2018 |
| Adagio Hearing Limited | Didcot | 2018 |
| Adagio Teas Operations Europe Limited | London | 2017 |
| Adahbikinis Ltd | London | 2025 |
| Adahjon Design Ltd | Dundee | 2025 |
| Adahk Global Ltd | Ormskirk | 2026 |
| Adahnah Label Ltd | Birmingham | 2025 |
| Adaike Ltd | London | 2009 |
| Adail Khan Fruit & VEG Limited | Ilford | 2018 |
| Adain Ltd | London | 2025 |
| Adair Automotive Ltd | Gosforth | 2025 |
| Adair Enterprise Limited | London | 2025 |
| Adair Fashion Ltd | London | 2021 |