| Awan Fruits & Vegetables Ltd | Wholesale & retail | 2026 |
| Axon Software Solutions Limited | Information & communication | 2016 |
| Ayanyemi Software Builder Limited | Information & communication | 2025 |
| Ayda Consulting Limited | Information & communication | 2014 |
| Aydinogullari Limited | Hospitality | 2016 |
| Ayla Food Suppliers Ltd | Hospitality | 2023 |
| AYO Investments Ltd | Real estate | 2024 |
| AZ Construct Limited | Construction | 2021 |
| AZP Accounts Limited | Professional & scientific | 2025 |
| Azuva Ltd | Administrative & support | 2022 |
| Azzarodecor Ltd | Construction | 2025 |
| A’S & M’S Limited | Professional & scientific | 2022 |
| B K (General Builders) Ltd | Construction | 2015 |
| B P Dunn Ltd | Administrative & support | 2024 |
| B&J Property Services Ltd | Real estate | 2023 |
| B-District Limited | Wholesale & retail | 2021 |
| B-Five Dental Hygiene Limited | Health & social care | 2024 |
| Baba Jawahar Singh JI Transport Ltd | Transport & logistics | 2025 |
| Babos Ventures Limited | Real estate | 2024 |
| Babsbuilt Construction Ltd | Construction | 2024 |
| Bac-Uk Limited | Wholesale & retail | 2019 |
| Badeanu Transport Ltd | Transport & logistics | 2022 |
| Baffour Healthcare Limited | Health & social care | 2015 |
| Bains Assets Ltd | Real estate | 2021 |
| Bajwa Wholesaling Limited | Wholesale & retail | 2021 |
| Bake & Go Ltd | Manufacturing | 2017 |
| BAL Builders London Limited | Construction | 2020 |
| Baljinder SINGH3 Ltd | Construction | 2025 |
| Banat 26 Ltd | Construction | 2026 |
| Bannis Consultancy Ltd | Professional & scientific | 2025 |
| Banson Ltd | Hospitality | 2023 |
| Barcos Trading Limited | Health & social care | 2010 |
| Bardhoshi Construction Ltd | Construction | 2024 |
| Barrcroft Group Ltd | Manufacturing | 2024 |
| Bartek Logistics Ltd | Transport & logistics | 2013 |
| Basden Coffee Ltd | Hospitality | 2026 |
| Basedown Construction Ltd | Construction | 2015 |
| Basevilla Limited | Extraterritorial | 2009 |
| Basf Construction Limited | Construction | 2014 |
| Bates Transport 76 Ltd | Transport & logistics | 2024 |
| Bauwtgx SUW Limited | Wholesale & retail | 2025 |
| BBT Events Limited | Other services | 2017 |
| BCD Interiors Ltd | Construction | 2013 |
| Bcnu Dghdu Limited | Wholesale & retail | 2025 |
| BDC Incorporate Ltd | Information & communication | 2023 |
| BDK Logistic Ltd | Transport & logistics | 2016 |
| BDM Contracts Ltd | Construction | 2025 |
| BE Prepared Evangelical Church | Other services | 2011 |
| Bealding Services Ltd | Construction | 2016 |
| Beautiful Women Limited | Other services | 2021 |
| Beautifully Bronzed Ltd | Other services | 2025 |
| Beauty and Melody (Euston) Ltd | Health & social care | 2015 |
| Beauty and Melody London (Marble Arch) Limited | Health & social care | 2017 |
| Beauty and Melody RLH Limited | Health & social care | 2017 |
| Beauty Pleasuree Ltd | Other services | 2024 |
| Beauty&Melody(Shoreditch) Limited | Health & social care | 2016 |
| BEE Orthodontics Ltd | Health & social care | 2023 |
| Bee's Life Service Ltd | Administrative & support | 2017 |
| Beedeg Freight Ltd | Transport & logistics | 2021 |
| Beehameed Ltd | Transport & logistics | 2025 |
| Beekor Homes Limited | Real estate | 2023 |
| Beeliz Limited | Professional & scientific | 2009 |
| Beeloved Limited | Other services | 2025 |
| Beerok Homes Limited | Real estate | 2023 |
| Begg & Co. Thermoplastics Limited | Wholesale & retail | 1956 |
| Behappy & Co (UK) Limited | Professional & scientific | 2009 |
| Behappy & Co Holdings Ltd | Real estate | 2011 |
| Behappy 4IMMIGRATION Limited | Professional & scientific | 2012 |
| Beir Doors & Windows Ltd | Construction | 1983 |
| Bejaoui Services Limited | Construction | 2025 |
| Bejo Property Services Ltd | Real estate | 2024 |
| BEL Plumbing Services Ltd | Construction | 2014 |
| Believers Care Ltd | Health & social care | 2024 |
| Believers' Generation of Believers' Foundation | Other services | 2006 |
| Bellame Ltd | Wholesale & retail | 2025 |
| Belvedere Asset Management Limited | Real estate | 2019 |
| Belz Limited | Health & social care | 2014 |
| Benboch Holdings Ltd | Real estate | 2025 |
| Benboch Services Limited | Health & social care | 2017 |
| Bentham Under Fives Centre Limited | Education | 2010 |
| Benupe Trucks Ltd | Transport & logistics | 2026 |
| Bertorudley Limited | Information & communication | 2025 |
| Bespoke Craft Hub Ltd | Administrative & support | 2025 |
| Bespoke Educational Services and Training Limited | Education | 2009 |
| Best Care Matters Ltd | Public administration | 2023 |
| Best Intentions Limited | Wholesale & retail | 2016 |
| Bestcare Health Limited | Health & social care | 2014 |
| Bethel Assets Limited | Real estate | 2019 |
| Better Impact Ltd. | Administrative & support | 2013 |
| Bexley Borough Citizens Advice Bureaux Limited | Other services | 1978 |
| Bexley Car & Commercials (S.E.) Limited | Wholesale & retail | 2019 |
| Bexley Cars Limited | Wholesale & retail | 2022 |
| Bexley Commercials Limited | Wholesale & retail | 2020 |
| Bexley Decorative Ltd | Construction | 2021 |
| Bexley Electrical Ltd | Construction | 2016 |
| Bexley Food Centre Ltd | Wholesale & retail | 2023 |
| Bexley Property Maintenance Ltd | Construction | 2023 |
| Bexley Real Estates Ltd | Real estate | 2022 |
| Bexley Road 1958 Limited | Extraterritorial | 2014 |
| Bexley Tachograph Centre Limited | Manufacturing | 2017 |