| Augmented Entertainment Ltd | Arts & recreation | 2018 |
| Augustus Zander Ltd | Information & communication | 2025 |
| Aura Group (Midlands) Ltd | Financial services | 2025 |
| Aura Real Estate Ltd | Real estate | 2025 |
| Aurasyn Ltd | Wholesale & retail | 2025 |
| Aurelian Engineering Limited | Professional & scientific | 2018 |
| Aurora Sales Limited | Wholesale & retail | 2024 |
| Aurorix Limited | Manufacturing | 2025 |
| Auspiceglory Limited | Wholesale & retail | 2025 |
| Aussiemanadventures Ltd | Other services | 2022 |
| Austins Travel Limited | Transport & logistics | 2024 |
| Auto Asset Midlands Limited | Wholesale & retail | 2019 |
| Auto Search West Midlands Limited | Wholesale & retail | 2025 |
| Auto Tech Centre Stafford Ltd | Wholesale & retail | 2020 |
| Auto-I Investments Limited | Real estate | 2017 |
| Autofusa Consultancy Services Ltd | Information & communication | 2024 |
| Autohashmeta Ltd | Wholesale & retail | 2021 |
| Autoline Accessories Limited | Wholesale & retail | 2009 |
| Autometers Systems Limited | Manufacturing | 2003 |
| Automotive Business Consultants Limited | Information & communication | 1994 |
| Automotive Fashion Ltd | Wholesale & retail | 2020 |
| Automotive Locksmith Solutions Ltd | Wholesale & retail | 2022 |
| Autopol Limited | Professional & scientific | 1982 |
| Autoprocure Logistics Limited | Wholesale & retail | 2025 |
| Autosports Finance Ltd | Wholesale & retail | 2010 |
| Autumnfire Ltd | Wholesale & retail | 2026 |
| AUX Marketing Limited | Professional & scientific | 2025 |
| Avalanche Media Ltd | Professional & scientific | 2024 |
| Avalon Vision Ltd | Professional & scientific | 2025 |
| Avard Property Development Ltd | Construction | 2025 |
| Avatrek Holding Ltd | Financial services | 2024 |
| Avatrek Ltd | Wholesale & retail | 2024 |
| Avellino Construction Ltd | Construction | 2022 |
| Avnikh Ltd | Hospitality | 2013 |
| Avocat Healthcare Ltd | Professional & scientific | 2022 |
| Avoir Design & Build Ltd | Other services | 2025 |
| Avoir Design Limited | Other services | 2023 |
| AW and IR Developments Limited | Real estate | 2023 |
| AW Care Limited | Health & social care | 2009 |
| AW Holdings & Investments Ltd | Financial services | 2025 |
| AW Metal Recycling Ltd | Wholesale & retail | 2022 |
| AW Properties & Building Ltd | Construction | 2025 |
| AW Visuals Ltd | Information & communication | 2022 |
| Award Electrical Stafford Ltd | Construction | 2012 |
| Award Forklift Training Ltd | Education | 2018 |
| Award Properties Limited | Real estate | 2017 |
| AWP Building & Landscaping Solutions Ltd | Construction | 2023 |
| AXE Automotive Ltd | Wholesale & retail | 2025 |
| Axiom TDM Limited | Information & communication | 2014 |
| Axminster Road 67 Limited | Real estate | 2015 |
| Ayat Peppers Pizza Limited | Hospitality | 2024 |
| Aydas Transformer Services Ltd | Professional & scientific | 2018 |
| Aygar Solutions Ltd | Real estate | 2025 |
| Aylestage Limited | Agriculture & fishing | 2004 |
| AYO Gorkhali Ltd | Hospitality | 2017 |
| Aysefe Ltd | Real estate | 2024 |
| Ayten&Arwa Ltd | Extraterritorial | 2024 |
| AZN Co., Ltd | Extraterritorial | 2022 |
| B & H Properties (Huntington) Limited | Financial services | 2011 |
| B & L Pubs Ltd | Hospitality | 2020 |
| B & M Stringer Consulting Limited | Professional & scientific | 2019 |
| B for U Digital Commerce Ltd | Wholesale & retail | 2025 |
| B J Mould Limited | Agriculture & fishing | 2005 |
| B L Inns Ltd | Hospitality | 2020 |
| B P Brown Travel Ltd | Transport & logistics | 2010 |
| B Thomas Construction & Security Systems Ltd | Construction | 2026 |
| B Thomas Holdings Ltd | Construction | 2023 |
| B Ward Roofing and Cladding Limited | Construction | 2018 |
| B&C Reed Ltd | Real estate | 2022 |
| B&G Cleaning Solutions Ltd | Administrative & support | 2024 |
| B&G Technical Stage Services Limited | Administrative & support | 2025 |
| B&H Healthcare Limited | Health & social care | 2008 |
| B-Fit Studio Ltd | Arts & recreation | 2017 |
| B.D. Fuels Limited | Wholesale & retail | 1978 |
| B.H. Holt and Sons Limited | Wholesale & retail | 1998 |
| B.Way Ltd | Professional & scientific | 2012 |
| Babak Ltd | Hospitality | 2026 |
| Babline Limited | Real estate | 1988 |
| Babybrains Limited | Professional & scientific | 2016 |
| Bachra Business Specialist Ltd | Real estate | 2024 |
| Bachra Crewe Ltd | Wholesale & retail | 2016 |
| Bachra Milan Ltd | Real estate | 2017 |
| Back 2 Bikes | Other services | 2010 |
| BAD Dog Designs Nixie Clocks Limited | Manufacturing | 2016 |
| Bader Road Property Ltd | Households | 2025 |
| BAG Market Limited | Wholesale & retail | 1996 |
| Bagnall Environmental Group Limited | Financial services | 2023 |
| Bagus Import and Export Co., Ltd | Wholesale & retail | 2024 |
| Bahir Bareen Co., Ltd | Construction | 2024 |
| Bailey K Limited | Wholesale & retail | 2016 |
| Baileys Fibreglass Limited | Wholesale & retail | 2016 |
| Balajee Stafford Limited | Real estate | 2022 |
| Balance IL Limited | Real estate | 2024 |
| Balano Limited | Wholesale & retail | 2022 |
| Ballooning Limited | Professional & scientific | 2023 |
| Bamai Trading Co., Ltd | Wholesale & retail | 2024 |
| Bambaragk Ltd | Manufacturing | 2025 |
| Bammens CIC | Other services | 2017 |
| Bammens Community Ventures Limited | Education | 2022 |
| Bandidos Investment Club Ltd | Financial services | 2025 |