| Awat Builder Ltd | Construction | 2025 |
| Awny Butchers Ltd | Wholesale & retail | 2022 |
| AXE Ndemen Limited | Health & social care | 2014 |
| Axent Brokers Ltd | Financial services | 2016 |
| Axherliov Ltd | Transport & logistics | 2021 |
| Axiom Business Clients Ltd | Administrative & support | 2025 |
| Axion Group Limited | Transport & logistics | 2021 |
| Axion Social Care Ltd | Health & social care | 2022 |
| Axis Design Architects Limited | Professional & scientific | 2007 |
| Axis Property Investors Ltd | Real estate | 2018 |
| AXM Group Ltd | Real estate | 2024 |
| AXO Contracts Limited | Administrative & support | 2018 |
| Axon Learning Ltd | Information & communication | 2025 |
| AY Glazing Solutions Ltd | Construction | 2024 |
| AY Property Holdings Ltd | Real estate | 2023 |
| AYA Motors Ltd | Wholesale & retail | 2021 |
| Ayaan Home Care Ltd | Health & social care | 2025 |
| Ayatopaz Consultancy Ltd | Education | 2025 |
| Ayce Connect Ltd | Health & social care | 2023 |
| Ayesha & MAY Ltd | Professional & scientific | 2024 |
| Ayilo Limited | Real estate | 2026 |
| Ayman Bakery Ltd | Manufacturing | 2026 |
| Aynova Global Ltd | Professional & scientific | 2026 |
| Ayoife Tefiko Limited | Health & social care | 2026 |
| Ayonimoni Limited | Real estate | 2025 |
| Ayra Aesthetics Ltd | Health & social care | 2024 |
| Ayris Enterprises Ltd | Wholesale & retail | 2025 |
| AYS (West Midlands) Ltd | Real estate | 2020 |
| Aysod Ltd | Wholesale & retail | 2026 |
| AZ Couriers Ltd | Transport & logistics | 2021 |
| AZ Freight Ltd | Transport & logistics | 2024 |
| AZ Tech London Ltd | Wholesale & retail | 2024 |
| Azaria UK Properties Limited | Real estate | 2025 |
| AZC Group Ltd | Transport & logistics | 2024 |
| AZC Security Ltd | Administrative & support | 2026 |
| Azeem Limited | Real estate | 2016 |
| Azhara Abayas Ltd | Wholesale & retail | 2026 |
| AZI Electrical Ltd | Manufacturing | 2026 |
| Aziz DAR Consult Ltd | Professional & scientific | 2024 |
| Aziz Mahmud Business Solution COM. Ltd | Wholesale & retail | 2025 |
| Azontobox Ltd | Arts & recreation | 2020 |
| Azure Property Group Ltd | Real estate | 2022 |
| Azurite Health Ltd | Professional & scientific | 2018 |
| AZZ Investments Ltd | Real estate | 2020 |
| Azzurro Training Products Ltd | Professional & scientific | 2021 |
| B & B Fulfilment Ltd | Administrative & support | 2025 |
| B & B Investments Ltd | Real estate | 2025 |
| B & C Property Solutions Limited | Real estate | 2023 |
| B & G Davies Ltd | Other services | 2024 |
| B & G Residential Limited | Administrative & support | 2016 |
| B & M Interiors Limited | Construction | 2011 |
| B & N Associates Ltd | Real estate | 2018 |
| B & R Properties Limited | Construction | 1997 |
| B & S Shuttle Ltd | Transport & logistics | 2018 |
| B & W Holdings Limited | Real estate | 2005 |
| B Atkins Limited | Other services | 2008 |
| B C Fabrications Limited | Manufacturing | 2003 |
| B C J Building Contractors Limited | Construction | 2003 |
| B Fletcher Electrical Services Limited | Construction | 2004 |
| B I Catering Ltd | Hospitality | 2024 |
| B L UK Construction Ltd | Construction | 2022 |
| B M Euroservice Limited | Wholesale & retail | 2006 |
| B Meters UK Limited | Wholesale & retail | 2019 |
| B P Accountants Limited | Professional & scientific | 2016 |
| B P Mechanical Services Limited | Construction | 2022 |
| B R O Storage and Logistics Limited | Transport & logistics | 2022 |
| B S T Maintenance Ltd | Construction | 2026 |
| B Singh Midland Construction Ltd | Construction | 2024 |
| B Sm@Rt Cctv Limited | Manufacturing | 2004 |
| B Team Driveways Ltd | Construction | 2024 |
| B Team Services Ltd | Construction | 2018 |
| B Wolverhampton Limited | Hospitality | 2022 |
| B&Adeliveries Ltd | Transport & logistics | 2023 |
| B&B Drylining Ltd | Construction | 2019 |
| B&D Catering Limited | Hospitality | 2025 |
| B&D Recruiting Ltd | Administrative & support | 2019 |
| B&H Building and Plumbing Ltd | Hospitality | 2025 |
| B&M Building Maintenance Ltd | Construction | 2024 |
| B'S Fitness Training Ltd | Arts & recreation | 2026 |
| B-E-W Barber Education Workshop Ltd | Education | 2024 |
| B-Secure 24 Ltd | Construction | 2016 |
| B. & T. Garden Buildings Limited | Manufacturing | 1994 |
| B.C.H.V. Management Limited | Real estate | 2000 |
| B.E. Central Construction Ltd | Construction | 2005 |
| B.E.S. Limited | Wholesale & retail | 1975 |
| B.I.S Motors Limited | Other services | 2016 |
| B.L.A. Computer Solutions Limited | Other services | 1996 |
| B.L.G Properties Ltd | Real estate | 2023 |
| B.M.E. Housing Consortium | Hospitality | 1999 |
| B.N. North & SON Limited | Construction | 1999 |
| B.P. Gillett Limited | Construction | 2002 |
| B.P. Plant Services Limited | Wholesale & retail | 2007 |
| B.S. Property Services (UK) Ltd | Construction | 2013 |
| B.T.C.H-Shipping- Ltd | Transport & logistics | 2021 |
| B.T.Motor Company Limited | Wholesale & retail | 1990 |
| B1 Enterprises Ltd | Extraterritorial | 2011 |
| B13 Labs Ltd | Information & communication | 2026 |
| B1G Writers Ltd | Information & communication | 2026 |
| B2B Hosting Club Ltd | Information & communication | 2025 |
| B2B the Complete Game C.I.C. | Education | 2026 |