| AZA Retailers Limited | Wholesale & retail | 2025 |
| AZA Services Ltd | Construction | 2019 |
| Azaan Kitchen Ltd | Hospitality | 2026 |
| Azad Grocery Ltd | Other services | 2022 |
| Azad Singh Ltd | Construction | 2024 |
| Azaf Collection Ltd | Wholesale & retail | 2021 |
| Azai Styles Ltd | Manufacturing | 2023 |
| Azam Estate Ltd | Construction | 2025 |
| Azan Halal Meat Ltd | Wholesale & retail | 2025 |
| Azba London Ltd | Wholesale & retail | 2014 |
| Azco (UK) Limited | Professional & scientific | 2002 |
| Azco Properties Ltd | Real estate | 2025 |
| Azera Trading Ltd | Wholesale & retail | 2016 |
| AZF Property Maintenance Ltd | Real estate | 2021 |
| AZH Holdings Limited | Financial services | 2024 |
| AZI Star Ltd | Wholesale & retail | 2025 |
| Azika Group Ltd | Wholesale & retail | 2025 |
| Azim & Sons Estates Ltd | Real estate | 2021 |
| Azimax (Dorking) Limited | Construction | 2018 |
| Azimax Developments Limited | Construction | 2019 |
| Azira Ltd | Administrative & support | 2026 |
| Aziz Accountants Ltd | Professional & scientific | 2020 |
| Aziz Contract & Procurement Advisory Ltd Ltd | Wholesale & retail | 2025 |
| Aziz Developments Limited | Real estate | 2021 |
| Azizz Ltd | Hospitality | 2025 |
| AZK Advisory Ltd | Professional & scientific | 2022 |
| AZK Property Limited | Real estate | 2010 |
| AZK Security Ltd | Administrative & support | 2025 |
| Azkar Ltd | Transport & logistics | 2019 |
| Azlaan Global Enterprises Limited | Wholesale & retail | 2025 |
| Azlan Enterprises Limited | Administrative & support | 2020 |
| AZM Estates Limited | Households | 2024 |
| Azmeer Hamas ALI Ltd | Wholesale & retail | 2025 |
| Azor Property Solutions Ltd | Real estate | 2025 |
| Azores One Ltd | Information & communication | 2025 |
| Azqaconsulting Ltd | Information & communication | 2022 |
| Azra Restaurant Ltd | Hospitality | 2020 |
| Azta Properties Ltd | Real estate | 2022 |
| Aztac Ltd | Construction | 2025 |
| Aztax Advisors Limited | Professional & scientific | 2012 |
| Aztec House Ltd | Real estate | 2004 |
| Aztec Worldwide Limited | Real estate | 2018 |
| Aztek 24 Ltd | Construction | 2009 |
| AZU Holdings Ltd | Financial services | 2026 |
| Azulotech Limited | Wholesale & retail | 2025 |
| Azuraa Ltd | Wholesale & retail | 2025 |
| Azurite Global Limited | Professional & scientific | 2023 |
| Azymis Ltd | Manufacturing | 2025 |
| AZZ Pitfield Ltd | Wholesale & retail | 2022 |
| Azza Consultancy Services Ltd | Information & communication | 2007 |
| B & B Homes Limited | Construction | 2019 |
| B & D World Limited | Wholesale & retail | 2017 |
| B & J Builders Ltd | Construction | 1999 |
| B & L Recruitment Limited | Hospitality | 2019 |
| B & S Facades Ltd | Construction | 2023 |
| B and J Health Solutions Ltd | Health & social care | 2018 |
| B and M Carpets Limited | Wholesale & retail | 2022 |
| B Bailey Property Management Ltd | Real estate | 2021 |
| B D P Electrical Services Limited | Construction | 2005 |
| B Executive Limited | Transport & logistics | 2018 |
| B Gilini Ltd | Real estate | 2013 |
| B Loft Conversions Limited | Construction | 2007 |
| B Lushi Construction Ltd | Construction | 2014 |
| B Lushi Property Investment Ltd | Real estate | 2025 |
| B Property Developments Limited | Real estate | 2016 |
| B S Care Service Limited | Health & social care | 2024 |
| B S Rental Properties Ltd | Real estate | 2022 |
| B Traders Ltd | Other services | 2022 |
| B&A Associates (UK) Limited | Professional & scientific | 2014 |
| B&Alex Limited | Construction | 2025 |
| B&B Construction Group Ltd | Construction | 2022 |
| B&D Painting Decoration Ltd | Construction | 2025 |
| B&D Security Service Ltd | Administrative & support | 2026 |
| B&K Builders Merchants Limited | Wholesale & retail | 2013 |
| B&K Facilities Ltd | Administrative & support | 2025 |
| B&K Group Builders Ltd | Construction | 2025 |
| B&M Business Solutions Ltd | Wholesale & retail | 2025 |
| B&M Cars Ltd | Wholesale & retail | 2019 |
| B&M Construction Ltd | Construction | 2018 |
| B&N London Limited | Professional & scientific | 2023 |
| B&N Ventures Ltd | Real estate | 2016 |
| B&R Building Ltd | Construction | 2024 |
| B&R Specialist Cars Ltd | Wholesale & retail | 2022 |
| B&S Removals Ltd | Transport & logistics | 2024 |
| B&T Consultants Ltd | Professional & scientific | 2025 |
| B&T Holdings PVT Ltd | Real estate | 2023 |
| B&Z Ltd | Professional & scientific | 2020 |
| B-Trim Ltd | Manufacturing | 2023 |
| B. & S. Lehal Limited | Wholesale & retail | 2003 |
| B. Bailey & Co Limited | Real estate | 2007 |
| B.C.A Therapies Limited | Health & social care | 2012 |
| B.C.T Plumbing & Heating Limited | Construction | 2016 |
| B.E Business Ltd | Construction | 2025 |
| B.Rajesh & Co Limited | Health & social care | 2016 |
| B.S Whippy Limited | Hospitality | 2024 |
| B1 Electrical Services Limited | Construction | 2009 |
| B1 Motor Limited | Wholesale & retail | 2018 |
| B1 Professionals Ltd | Professional & scientific | 2022 |
| B1 Smiles Limited | Health & social care | 2023 |
| B2B Consultancy Services Limited | Professional & scientific | 2025 |