| Auto Body Care (Sale) Ltd | Wholesale & retail | 2024 |
| Auto Breakers (UK) Ltd | Wholesale & retail | 2014 |
| Auto Logistic Solutions Limited | Administrative & support | 2010 |
| Auto Part Solutions Ltd | Wholesale & retail | 2021 |
| Automotique Limited | Wholesale & retail | 2013 |
| Automotive Direct Logistics Limited | Wholesale & retail | 2017 |
| Autonoton Ltd | Information & communication | 2026 |
| Autoplex Motors Ltd | Wholesale & retail | 2021 |
| Autopro Ltd | Wholesale & retail | 2024 |
| Autorescue (1990) Limited | Administrative & support | 1997 |
| Autos Northwest Limited | Wholesale & retail | 2013 |
| Autotrade DB Ltd | Administrative & support | 2017 |
| Autovia Cars Ltd | Wholesale & retail | 2025 |
| Autowalay Ltd | Wholesale & retail | 2024 |
| Auxilia HR Solutions Limited | Professional & scientific | 2019 |
| AV Metals Limited | Manufacturing | 2010 |
| AV Unibrak South Limited | Construction | 2013 |
| AVA Market Limited | Wholesale & retail | 2022 |
| Avamedia Creativecontent Ltd | Other services | 2020 |
| Avamedia Universal Foundation | Information & communication | 2020 |
| Avanti Hair and Beauty Limited | Other services | 2003 |
| Averra Initiatives CIC | Health & social care | 2026 |
| Avianprism Ltd | Wholesale & retail | 2019 |
| Avocado Design and Build Limited | Construction | 2018 |
| Avoira Limited | Information & communication | 1983 |
| Avondale Chippy Ltd | Wholesale & retail | 2020 |
| Avpay Ltd | Information & communication | 2021 |
| Avyra Group Ltd | Professional & scientific | 2026 |
| Awan Convenience Store Ltd | Wholesale & retail | 2021 |
| Awann Ltd | Wholesale & retail | 2021 |
| AWAY2 Travel Limited | Administrative & support | 2013 |
| Awen Global Ltd | Information & communication | 2014 |
| AWS Accountants Ltd | Professional & scientific | 2012 |
| AWS Accounting Ltd | Professional & scientific | 2025 |
| AWS B2B Solutions Ltd | Administrative & support | 2024 |
| AWS GBR Ltd | Professional & scientific | 2025 |
| AX1 Estates Ltd | Real estate | 2025 |
| Axes to Ashes Ltd | Arts & recreation | 2022 |
| AXL Design Limited | Professional & scientific | 2016 |
| Axomotive Limited | Professional & scientific | 2024 |
| Axon Property Ltd | Real estate | 2026 |
| AY Cleaning Limited | Administrative & support | 2024 |
| AY Lounge& Bar Limited | Hospitality | 2025 |
| Ayaans Autobody Repairs Ltd | Wholesale & retail | 2023 |
| Ayar Optics Ltd | Health & social care | 2022 |
| Ayden Optical Ltd | Health & social care | 2024 |
| Aydin Building Services Limited | Professional & scientific | 2025 |
| Ayem Project Management Limited | Real estate | 2023 |
| AYK Ltd | Real estate | 2025 |
| AYM Holdings Limited | Financial services | 2024 |
| AYM Investments Limited | Real estate | 2024 |
| AYM Postal Service Limited | Wholesale & retail | 2009 |
| Ayurvedic Healing & Laser Clinic Ltd | Health & social care | 2024 |
| AZ Fashion World Limited | Wholesale & retail | 2023 |
| AZ GA Solutions Limited | Administrative & support | 2013 |
| Azhar a Builder Ltd | Construction | 2021 |
| Azlaan Medical Limited | Health & social care | 2025 |
| Azmart Limited | Extraterritorial | 2020 |
| Azorez Skin Clinic Ltd | Other services | 2025 |
| Azumini Limited | Real estate | 2017 |
| Azymuth Acoustics UK Limited | Professional & scientific | 2017 |
| AZZ Electrical Services Ltd | Construction | 2025 |
| B & C Taylor Properties Ltd | Real estate | 2025 |
| B & I Properties (NW) Limited | Real estate | 2025 |
| B & O Textile Consultants Limited | Professional & scientific | 2021 |
| B C Taylor Properties Ltd | Real estate | 2025 |
| B C Trading NW Ltd | Wholesale & retail | 2023 |
| B D Taxation Services Ltd | Professional & scientific | 2020 |
| B Humphries Holdings Limited | Financial services | 2025 |
| B J Marshall Ltd | Construction | 2022 |
| B M Autobodies Limited | Wholesale & retail | 2001 |
| B&A Consultants Ltd | Health & social care | 2023 |
| B&F Fibre and Civils Ltd | Construction | 2020 |
| B&N Heera Properties Ltd | Real estate | 2025 |
| B&O Kullaj Ltd | Other services | 2025 |
| B-Inspired Training and Consultants Ltd | Education | 2015 |
| B-Side Apparel Ltd | Wholesale & retail | 2026 |
| B-Technical Services Ltd | Administrative & support | 2022 |
| B. N. LAD Limited | Health & social care | 2022 |
| B. S. Plant Limited | Administrative & support | 2016 |
| B.P. Property Developments Limited | Energy | 1998 |
| B2 Fitness (UK) Limited | Manufacturing | 2007 |
| B2 Real Estate Ltd | Real estate | 2022 |
| B2B Food Solutions Limited | Wholesale & retail | 2012 |
| B2K Holdings Ltd | Real estate | 2025 |
| B3D Technology Ltd. | Professional & scientific | 2015 |
| BA Fashions Ltd | Wholesale & retail | 2021 |
| Baansa Ltd | Wholesale & retail | 2020 |
| Babikin Ltd | Wholesale & retail | 2024 |
| Baby Sensory Manchester Central Limited | Education | 2025 |
| Bacup Little Theatre Ltd | Arts & recreation | 2025 |
| BAD IMP Studios Ltd | Information & communication | 2023 |
| Badger International Ltd | Administrative & support | 2023 |
| Badlan Electrical Limited | Construction | 2021 |
| Baggoit Ltd | Information & communication | 2026 |
| Bailey Edwards Limited | Construction | 2026 |
| Baillie Regulatory Services Ltd | Administrative & support | 2017 |
| Baison Trade Limited | Wholesale & retail | 2025 |
| Baking Concepts Limited | Manufacturing | 2025 |
| Balal Rana Limited | Health & social care | 2013 |