| Adal Marine Design Limited | Lyndhurst | 2019 |
| Adal Seco Limited | Ipswich | 1996 |
| Adalec Ltd | Paisley | 2020 |
| Adalogo Ltd | Rochdale | 2025 |
| Adam & Co. (Textiles) Limited | Leicester | 1979 |
| Adam & Muna Cakes Ltd | Walsall | 2025 |
| Adam and Zeshan Builders Ltd | Manchester | 2023 |
| Adam Bakery Ltd | Wolverhampton | 2020 |
| Adam Carpets Limited | Worcester | 1982 |
| Adam Cartridges Ltd | Burntisland | 2026 |
| Adam Chase Medical Ltd | London | 2025 |
| Adam Cosmetics Ltd | London | 2025 |
| Adam Coyle Ltd | Clydebank | 2019 |
| Adam Curtis Dwcf Limited | Newmarket | 2014 |
| Adam Elliot Limited | Cowbridge | 2014 |
| Adam Equipment Co. Limited | Milton Keynes | 1977 |
| Adam EVE Limited | London | 2022 |
| Adam Fabrications Ltd | Sheffield | 2010 |
| Adam Fire Engineers Limited | Oban | 2016 |
| Adam Gregory Joinery Manufacturing Ltd | Stoke On Trent | 2018 |
| Adam Halal Foods Limited | Birmingham | 2007 |
| Adam Haulage Services Ltd | Nottingham | 2018 |
| Adam Home Global Ltd | Rochdale | 2024 |
| Adam Home Interiors Ltd | Wakefield | 2021 |
| Adam Jackson Limited | Millom | 2015 |
| Adam James Bespoke Joinery Limited | Chichester | 2021 |
| Adam James Bespoke Limited | London | 2018 |
| Adam Jones Stonemasons Ltd | Wolverhampton | 2018 |
| Adam Kershaw Ltd | Tunbridge Wells | 2015 |
| Adam Knitwear Ltd | Manchester | 2016 |
| Adam Kristian Bespoke Limited | Hyde | 2026 |
| Adam Lamb Ltd | Jarrow | 2020 |
| Adam Law Shoemaker Ltd | Rochester | 2023 |
| Adam Linens Ltd | Northampton | 2013 |
| Adam M Welding Services Ltd | Dunfermline | 2021 |
| Adam Mark Architectural Metalwork Ltd | Colne | 2011 |
| Adam Mercer Engineering Limited | Havant | 2025 |
| Adam Michaels Group Ltd | Chorley | 2018 |
| Adam Millar & Sons Ltd. | Paisley | 2003 |
| Adam Phillips Plant Hire and Contractors Limited | Falmouth | 2005 |
| Adam Plater Woodworks Ltd | Mildenhall | 2025 |
| Adam Rogo Ltd | Coventry | 2022 |
| Adam Rose-Alison Limited | Eastbourne | 2022 |
| Adam Sofa Limited | Birmingham | 2025 |
| Adam Sweets Ltd | London | 2016 |
| Adam Torok Contracting Ltd | High Wycombe | 2026 |
| Adam Upholstery Limited | Blackburn | 1999 |
| Adam Ventilation & Coldroom Ltd | Harrow | 2020 |
| Adam Wallinger Limited | Reading | 2013 |
| Adam Williams Design Limited | Wells | 2009 |
| Adam Wood Carpentry & Building Ltd | Bury St. Edmunds | 2026 |
| Adam YN YR Ardd CYF. | Llanelli | 2020 |
| Adam's Mower Services Ltd | Witney | 2019 |
| Adam's Nest Ltd | Derby | 2022 |
| Adam's Repairs and Supply Ltd | Slough | 2025 |
| Adam, Rouilly Limited | Sittingbourne | 1971 |
| Adam.Bike Ltd | London | 2020 |
| Adama Agricultural Solutions UK Ltd | Reading | 1988 |
| Adamas Diamond Studio Limited | Fitzrovia | 2024 |
| Adamasintl UK Limited | London | 2025 |
| Adamczyk Limited | London | 2012 |
| Adameng Limited | Chesterfield | 2003 |
| Adament Refractory Settings Limited | Poulton Le Fylde | 1941 |
| Adamo Foods Ltd | Nottingham | 2021 |
| Adamo Property Investments Limited | Oakham | 2016 |
| Adams Agility Equipment Ltd | Newark | 2026 |
| Adams and Green Limited | Hessle | 2011 |
| Adams Associates Limited | London | 1985 |
| Adams Bakehouse Limited | Bedlington | 2021 |
| Adams Bespoke Joinery London Ltd | Reading | 2024 |
| Adams Cakes Limited | Altrincham | 2019 |
| Adams Carpentry & Sons Ltd | Westerham | 2022 |
| Adams Chocolates Ltd | Clevedon | 2024 |
| Adams Clinical Nutrition Ltd | Brighton | 2024 |
| Adams Cundell Engineers Limited | Buckingham | 1973 |
| Adams Electrical Ltd | Aberdeen | 2019 |
| Adams Electrical Services (GOC) Limited | Sidcup | 2019 |
| Adams Electronics (International) Limited | Crowborough | 1998 |
| Adams Enclosures Limited | Walsall | 2006 |
| Adams Engineering (Ilkeston) Limited | Ilkeston | 2016 |
| Adams Fresh Meat & Poultry Limited | Tipton | 2019 |
| Adams General and Precision Engineering Ltd | Gloucester | 2011 |
| Adams Gold Limited | Harrow | 1996 |
| Adams Hydraulics Limited | Birmingham | 2025 |
| Adams Joinery Limited | Leigh On Sea | 1979 |
| Adams Lock & Maintenance Ltd | Wolverhampton | 2025 |
| Adams Loft Ltd | Glasgow | 2024 |
| Adams Lubetech Limited | West Midlands | 1999 |
| Adams of RYE Limited | Sussex | 1952 |
| Adams Plaster Mouldings Ltd | Liverpool | 2015 |
| Adams Schoolwear Limited | Ruislip | 2017 |
| Adams Shaw Limited | Lincoln | 2004 |
| Adams Watt Ltd | Chichester | 2016 |
| Adams Yacht Services Limited | King'S Lynn | 2023 |
| Adamson (Dished Ends) Limited | Cheshire | 1993 |
| Adamson Fabrications (Dundee) Limited | Dundee | 1949 |
| Adamson Modular Systems Limited | | 1984 |
| Adamson Packaging Limited | Burscough | 2006 |
| Adamson Refrigeration Contracts Ltd | Belfast | 2019 |
| Adamson's Carpentry Ltd | Bideford | 2025 |