| A2R Moulding Limited | Portsmouth | 2025 |
| A2S Electrics Ltd | Enfield | 2025 |
| A2Y GAS Heating & Plumbing Limited | London | 2023 |
| A2Y Solutions Ltd | Watford | 2025 |
| A2Z Beds Limited | Batley | 2022 |
| A2Z Canopies Limited | Burnley | 2022 |
| A2Z Coating Ltd | Leicester | 2023 |
| A2Z Concepts Limited | Bishop'S Stortford | 2001 |
| A2Z Concrete Ltd | West Bromwich | 2026 |
| A2Z Construction and Steel Fabrications Portsmouth Limited | Southampton | 2024 |
| A2Z Creams & Coffee Appliances Limited | London | 2026 |
| A2Z Electrical (York) Ltd | York | 2025 |
| A2Z Essentialsfix Ltd | London | 2025 |
| A2Z Fitting Ltd | Nelson | 2018 |
| A2Z Hvac Ltd | Aylesbury | 2025 |
| A2Z Instruments Limited | Dagenham | 2014 |
| A2Z Manufacturing Limited | Nuneaton | 2022 |
| A2Z Printing Ltd | London | 2023 |
| A2Z Signs Ltd | Abingdon | 2017 |
| A3 Fabrications Limited | Mansfield | 2025 |
| A3 Foods Limited | Harrow | 2001 |
| A3 Leisure Limited | Portsmouth | 2022 |
| A3 Print Group Ltd | Godalming | 2021 |
| A3 Print House Ltd | Falkirk | 2022 |
| A3 Tailoring Services Ltd | Burton On Trent | 2025 |
| A30 Designs Ltd | Hayle | 2020 |
| A311 Ltd | Aylesford | 2021 |
| A34 Timber Gates and Garage Doors Ltd | Lichfield | 2023 |
| A38 Caravans Ltd. | Saltash | 2011 |
| A3DP Limited | Bury St. Edmunds | 2023 |
| A3I Limited | Cardiff | 2017 |
| A3P Ltd | Godalming | 2021 |
| A3S Solutions Limited | Leicester | 2021 |
| A4 Apparel Limited | Barnstaple | 2005 |
| A4 Concepts Limited | London | 2018 |
| A4 Design & Print Ltd. | Dundee | 2002 |
| A4 Interiors Ltd | Maidenhead | 2023 |
| A4 Labels (Holdings) Limited | High Peak | 2022 |
| A4 Laser Labels Limited | High Peak | 2017 |
| A40 Tyres Ltd | High Wycombe | 2021 |
| A406 Windows Ltd | London | 2022 |
| A41 Pallet Services Ltd | Wirral | 2008 |
| A4E Systems Ltd | Bradford | 2012 |
| A4POWER Limited | Castleford | 2023 |
| A5 Decking Supplies Limited | Atherstone | 2020 |
| A5 Fabrications Ltd | Kensworth | 2024 |
| A5 Hydraulics Limited | Dodsworth Street Darlington | 1991 |
| A5 Resource and Logistic Solutions Ltd | Rhyl | 2015 |
| A5 Sheds Ltd | Cheslyn Hay | 2020 |
| A5 Spas Ltd | Atherstone | 2015 |
| A51 Rugeley Ltd | Rugeley | 2018 |
| A6 Mouldings Limited | Kettering | 2005 |
| A60 Marine Spares Ltd | Kilmarnock | 2017 |
| A7 Machinery Limited | Hawkhurst | 2025 |
| A9 Scientific UK German Medical Industry Ltd | London | 2023 |
| A@Z Computing Limited | Milton Keynes | 2011 |
| AA & Co Carpentry Ltd | Birmingham | 2024 |
| AA Aluminium Windows Limited | Leicester | 2012 |
| AA Ambrosia Ltd | London | 2025 |
| AA Anodising UK Ltd | Skipton | 2010 |
| AA Auto Electrics Ltd | Harrow | 2023 |
| AA Automotive Seat Covers Ltd | Southall | 2018 |
| AA Baits & Feeds Limited | Bromborough | 2017 |
| AA Bespoke Ltd | Belper | 2020 |
| AA Best Bakery Ltd | Oldham | 2020 |
| AA Boiler Services Limited | London | 2015 |
| AA Caravan & Trailer Services Ltd | Leeds | 2018 |
| AA Carpenter Ltd | Peterborough | 2018 |
| AA Coatings Ltd | North Shields | 2025 |
| AA Commercial Refrigeration Ltd | Forest Gate | 2020 |
| AA Concrete UK Ltd | Hounslow | 2019 |
| AA Cooling System Ltd | Swansea | 2021 |
| AA Electrical Engineering Ltd | Thetford | 2024 |
| AA Electronics Ltd | Luton | 2026 |
| AA Energy Services Limited | Stockton-On-Tees | 2019 |
| AA Engineering Limited | Tipton | 2016 |
| AA Engineering Services Ltd | Manchester | 2019 |
| AA English Coffee Ltd | London | 2018 |
| AA Equipment Services Limited | Wednesbury | 2001 |
| AA Fabrications & Machinery Ltd | Ipswich | 2011 |
| AA Fabrications (South West) Limited | Frome | 2013 |
| AA Fencing UK Limited | Liverpool | 2009 |
| AA Fibreglassing Ltd | Christchurch | 2017 |
| AA Foods Limited | Leicester | 2012 |
| AA Furniture Ltd | Birmingham | 2023 |
| AA Gadgets Limited | London | 2022 |
| AA Glass Supplies Ltd | London | 2023 |
| AA Global Group Ltd | Leyland | 2005 |
| AA Graphics Limited | Orpington | 2014 |
| AA Group Holdings Ltd | London | 2018 |
| AA Heating Group Ltd | Fareham | 2024 |
| AA Home Improvement Ltd | London | 2025 |
| AA Industrial Door Co. Limited | Road Rotherham | 1998 |
| AA Instant Construction Ltd | Tilbury | 2023 |
| AA Kitchens & Bedrooms Limited | Oldham | 2023 |
| AA LAB Furniture Ltd | Horndean | 2024 |
| AA Leather Limited | Newcastle Under Lyme | 2018 |
| AA Lifts Ltd | Stoke-On-Trent | 2011 |
| AA Pipework and Fabrication Ltd | Norwich | 2023 |
| AA Plant Service Limited | Bideford | 2019 |