| Avender Ltd | Information & communication | 2025 |
| Avenue Forty Two Limited | Households | 1976 |
| Avenya Real Estate Brokerage Limited | Real estate | 2026 |
| Averne Limited | Wholesale & retail | 2025 |
| Avero Ltd | Wholesale & retail | 2025 |
| AVF Negocios Limited | Wholesale & retail | 2025 |
| Aviacargo Limited | Extraterritorial | 2020 |
| Aviano Ltd | Real estate | 2018 |
| Aviate Engineering Ltd | Wholesale & retail | 2023 |
| Aviation & Defence Spares Group Limited | Professional & scientific | 2018 |
| Aviation & Defence Spares Limited | Wholesale & retail | 1990 |
| Aviation Defence and Marine Spares Limited | Professional & scientific | 2008 |
| Avid Collector Limited | Wholesale & retail | 2012 |
| Avioncarte Ltd | Wholesale & retail | 2020 |
| Avip Group Concert & Event Agency Ltd. | Professional & scientific | 2019 |
| Aviron Developments Ltd | Construction | 2019 |
| Avma Holdings Ltd | Professional & scientific | 2026 |
| AVO Care Limited | Administrative & support | 2022 |
| Avon Beach Ltd | Hospitality | 2012 |
| Avon Tools Hire Limited | Administrative & support | 2011 |
| AVS Mining Ltd | Energy | 2025 |
| AVV Special Ltd | Construction | 2019 |
| AW Building and Developments Limited | Extraterritorial | 2018 |
| AW Fulfillment Limited | Wholesale & retail | 2022 |
| AW Masonry Ltd | Construction | 2023 |
| AW Social Value Consultancy Ltd | Professional & scientific | 2026 |
| Awaisco Limited | Wholesale & retail | 2021 |
| Awell Ltd | Construction | 2017 |
| Awemko Ltd | Wholesale & retail | 2019 |
| Awpr Limited | Information & communication | 2022 |
| Awsome Security Services Ltd | Administrative & support | 2025 |
| Axcom Limited | Professional & scientific | 2019 |
| Axed Alliance Ltd | Information & communication | 2024 |
| Axent Embroidery Limited | Manufacturing | 2018 |
| Axia Engineering Ltd | Professional & scientific | 2025 |
| Axial Marketing Services Ltd | Professional & scientific | 2018 |
| Axilon Ltd | Information & communication | 2025 |
| Axiom TM Ltd | Construction | 2018 |
| Axis Cost Consulting Limited | Professional & scientific | 2025 |
| Axis RDY Ltd | Arts & recreation | 2024 |
| Axis Tooling Solutions Limited | Manufacturing | 2001 |
| AXL Developments Ltd | Real estate | 2024 |
| AXL Group Ltd | Financial services | 2024 |
| AXL Solutions Ltd | Professional & scientific | 2026 |
| Axminster Bingley Limited | Construction | 2016 |
| Axminster Hand Car Wash Ltd | Administrative & support | 2026 |
| Ayan Ullah Ltd | Wholesale & retail | 2024 |
| Aymex International Ltd | Wholesale & retail | 2024 |
| AZ Hospitality Bars Ltd | Hospitality | 2026 |
| AZ Hospitality Group Ltd | Hospitality | 2025 |
| Azalea Developments (Protea) Ltd | Construction | 2024 |
| Azalea Developments Ltd | Construction | 2024 |
| Azandt Group Ltd | Information & communication | 2021 |
| Azava Limited | Information & communication | 2021 |
| Azera Technology Ltd | Information & communication | 2017 |
| Azfm Ltd | Wholesale & retail | 2020 |
| Azlantextile Ltd | Wholesale & retail | 2024 |
| Aztec Commercial Interiors Limited | Construction | 2000 |
| Aztec Mezzanine Floors Limited | Construction | 2000 |
| Azure Beauty Ltd | Other services | 2026 |
| Azure Life Holdings Ltd | Financial services | 2024 |
| Azure Life Ltd | Administrative & support | 2017 |
| Azure Specialty Chemicals Ltd | Wholesale & retail | 2013 |
| Azzopardi Homes Limited | Real estate | 2024 |
| B & a Homes Ltd | Real estate | 2020 |
| B & H Services Air Conditioning Limited | Manufacturing | 2003 |
| B C Stephens Properties Limited | Real estate | 2018 |
| B Carpenter Life Science Consultants Ltd | Professional & scientific | 2023 |
| B Cheer Property Holdings Limited | Real estate | 2016 |
| B Corp Media Ltd | Professional & scientific | 2019 |
| B Dykes Property Limited | Real estate | 2025 |
| B H Building & Maintenance Services Limited | Construction | 2012 |
| B J Property LLP | | 2023 |
| B J W Booker Ltd | Construction | 2021 |
| B Kalm Limited | Wholesale & retail | 2021 |
| B Miller & Sons Limited | Wholesale & retail | 2012 |
| B Mulford Historic Carpentry Ltd | Manufacturing | 2015 |
| B S Estates Limited | Real estate | 1983 |
| B Security Services Limited | Administrative & support | 2015 |
| B Spark Programming Limited | Information & communication | 2017 |
| B V Marine Ltd | Manufacturing | 2023 |
| B&A Auto Limited | Administrative & support | 2018 |
| B&B Ventures Ltd | Transport & logistics | 2026 |
| B&K Varcheck Ltd | Wholesale & retail | 2020 |
| B&M Consultancy Group Ltd | Professional & scientific | 2024 |
| B&R Restorations Ltd | Wholesale & retail | 2024 |
| B-Yond Belief Ltd | Education | 2023 |
| B.46 Developments Ltd | Real estate | 2017 |
| B.46 Holdco Ltd | Financial services | 2025 |
| B.46 Trustees Ltd. | Financial services | 2014 |
| B.S.G. Developments Limited | Real estate | 1986 |
| B1210 Group Ltd | Information & communication | 2024 |
| B2B Saas Partners Ltd | Information & communication | 2023 |
| Baan Users Limited | Other services | 2000 |
| Babla and Sons Limited | Wholesale & retail | 2022 |
| Babmi Baby Limited | Wholesale & retail | 2025 |
| Back for More Ltd | Professional & scientific | 2026 |
| Backbone Chiropractic Limited | Health & social care | 2011 |
| Backes&Neves Limited | Wholesale & retail | 2025 |
| Backtick Consulting Ltd | Information & communication | 2016 |