| AXF Sales Cars Ltd | Wholesale & retail | 2026 |
| Axford Limited | Administrative & support | 2012 |
| Axial Facilities & Maintenance Limited | Households | 2023 |
| Aximus Ongar Limited | Real estate | 2020 |
| Axiom Dwfm Properties Limited | Other services | 2022 |
| Axiom Strategic Minerals Engineering Limited | Wholesale & retail | 2026 |
| AYA Global Ltd | Wholesale & retail | 2021 |
| AYA Hotels Ltd | Real estate | 2023 |
| Ayaan Chillies Limited | Wholesale & retail | 2018 |
| Ayana Investments Ltd | Hospitality | 2020 |
| Aybak Halal 2 Ltd | Hospitality | 2025 |
| Aybak Halal Ltd | Hospitality | 2025 |
| Aybe Group Limited | Other services | 2018 |
| Ayjay Investments Limited | Professional & scientific | 2008 |
| Ayla's Property Invesment Limited | Real estate | 2024 |
| Aylestone Enterprises Limited | Wholesale & retail | 2002 |
| Ayma Sport Ltd | Wholesale & retail | 2025 |
| AYO 2025 Ltd | Real estate | 2025 |
| AYO Holdings Ltd | Financial services | 2025 |
| AYO Sales Ltd | Wholesale & retail | 2022 |
| AYS Properties Limited | Real estate | 2024 |
| Aysu Limited | Hospitality | 2025 |
| Aytech Solutions Ltd | Information & communication | 2015 |
| Ayushi Holdings Limited | Financial services | 2017 |
| Ayyan Hairstylist Ltd | Other services | 2026 |
| Ayzar Limited | Administrative & support | 2017 |
| AZ Intelli Ltd | Professional & scientific | 2016 |
| AZ Shoes & Accessories Ltd | Wholesale & retail | 2020 |
| Azaan Foods Ltd | Hospitality | 2018 |
| Azamour Capital Ltd | Construction | 2014 |
| AZE Property Limited | Real estate | 2018 |
| Azelcross Limited | Professional & scientific | 2005 |
| Aziz Bros Ltd | Real estate | 2024 |
| Aziz Solution Ltd | Wholesale & retail | 2023 |
| Azoos Records Company Ltd | Information & communication | 2025 |
| Aztan Entertainments Ltd | Hospitality | 2024 |
| Azure Residents Management Company Limited | Households | 2003 |
| B & a Builders Ltd | Construction | 2014 |
| B & F Care Ltd | Real estate | 2018 |
| B & K Salt Beef Bar & Restaurants Limited | Hospitality | 2008 |
| B & R Bakery & Restaurant Halal Ltd. | Extraterritorial | 2013 |
| B and G Properties (Laindon) Limited | Real estate | 2018 |
| B Doran OIL and GAS Limited | Administrative & support | 2011 |
| B G Mechanical Ltd | Construction | 2023 |
| B M B Consultants Limited | Professional & scientific | 2012 |
| B N a Car Repairs and Services Ltd | Wholesale & retail | 2016 |
| B Phillips Limited | Real estate | 2022 |
| B&C Building Ltd | Construction | 2018 |
| B&C Delivery Drinks Ltd | Wholesale & retail | 2023 |
| B&K Bathroom&Kitchen Refurbishment Ltd | Construction | 2020 |
| B&K Invesments Limited | Real estate | 2024 |
| B&N Autos Ltd | Wholesale & retail | 2024 |
| B-Intellect Limited | Real estate | 2016 |
| B-Pure Limited | Wholesale & retail | 2014 |
| B.A.S.S.T.E.C.H Academy CIC | Public administration | 2025 |
| B.K & J Ltd | Hospitality | 2024 |
| B.Stossel Limited | Manufacturing | 1953 |
| B1 English Academy Limited | Education | 2010 |
| B2W Electrical Ltd | Construction | 2024 |
| BA Medi Pharma Ltd | Health & social care | 2016 |
| BA Patel Limited | Financial services | 2015 |
| Babiesinessex Ltd | Wholesale & retail | 2019 |
| Babig Limited | Hospitality | 2019 |
| Bablr Ltd | Wholesale & retail | 2021 |
| Babylonpharma Ltd | Other services | 2024 |
| Bacon Lane (Freehold) Limited | Real estate | 2002 |
| BAD Art Life Limited | Arts & recreation | 2019 |
| BAD BOY Cars Ltd | Wholesale & retail | 2025 |
| Baddams Limited | Real estate | 2019 |
| Badh Properties Limited | Real estate | 2025 |
| Bagivver Ltd | Professional & scientific | 2026 |
| Bahanvalley Limited | Wholesale & retail | 2025 |
| Bahar Halal Meat Limited | Wholesale & retail | 2014 |
| Bahar Money Transfer Ltd | Financial services | 2015 |
| Bahar Travel Ltd | Administrative & support | 2015 |
| Baig Trade Ltd | Wholesale & retail | 2026 |
| Bais Chaim Yaakov Limited | Other services | 2022 |
| BAK Heating & Plumbing Company Limited | Construction | 2017 |
| Bakes by JAS Ltd | Wholesale & retail | 2020 |
| Bakha Ltd | Construction | 2019 |
| Balag Ltd | Wholesale & retail | 2025 |
| Balance Entertainment Limited | Arts & recreation | 2019 |
| Baledweyn Limited | Transport & logistics | 2020 |
| Balforth Limited | Professional & scientific | 2025 |
| Balkan Games Ltd | Wholesale & retail | 2026 |
| Baluf Limited | Information & communication | 2008 |
| Bambi Lashes Ltd | Other services | 2022 |
| Bamblu Limited | Wholesale & retail | 2018 |
| Bamboo Garden ( London ) Ltd | Hospitality | 2020 |
| Bamff Ltd | Professional & scientific | 2011 |
| Bamgro Ltd | Transport & logistics | 2013 |
| Bamla Limited | Professional & scientific | 2013 |
| Bamya Limited | Hospitality | 2015 |
| Bamyan Jewellery Wholesale Ltd | Manufacturing | 2023 |
| Banat Property Ltd | Real estate | 2026 |
| Banbury Associates Limited | Professional & scientific | 1995 |
| Bangela Limited | Administrative & support | 2007 |
| Bansi Limited | Real estate | 2020 |
| Baraka Business Ltd | Wholesale & retail | 2024 |
| Baraka Hospitality Ltd | Hospitality | 2026 |