| Bacha & Bella Properties Limited | Real estate | 2025 |
| Bains Blackheath Wine Stores Ltd | Wholesale & retail | 2026 |
| Baize Court Management Company Limited | Real estate | 2006 |
| Bake Eden Ltd | Wholesale & retail | 2018 |
| Baker Logistics Ltd | Transport & logistics | 2018 |
| Balm Care Services Limited | Health & social care | 2013 |
| Bano Construction Ltd | Construction | 2026 |
| Baraha Mastra & Jalapa Ltd | Hospitality | 2026 |
| BARBERSHOPCHATS10 C.I.C. | Education | 2022 |
| Barnaby Construction Ltd | Construction | 2025 |
| Barnsley Brothers Driveways Ltd | Construction | 2022 |
| Bartlett Group Services Limited | Construction | 2019 |
| BDP Storage Ltd | Other services | 2022 |
| Bell & SON Ltd | Professional & scientific | 2024 |
| Belles of Eden Limited | Education | 2026 |
| Belman Performance Automotive Limited | Professional & scientific | 2012 |
| Belman Technologies International Limited | Manufacturing | 2020 |
| Bemjoth UK Limited | Other services | 2011 |
| BEN Bell Homes Ltd | Real estate | 2026 |
| Bengal Village Rowley Ltd | Hospitality | 2025 |
| Benks Properties Limited | Financial services | 2024 |
| Benny Transport Ltd | Transport & logistics | 2022 |
| Best Vehicle Solutions Ltd | Wholesale & retail | 2025 |
| BEST2BUY Ltd | Wholesale & retail | 2020 |
| Bgid Holdings Limited | Professional & scientific | 2023 |
| Bgroup Int'L Ltd | Wholesale & retail | 2020 |
| Bhaumik Ltd | Health & social care | 2013 |
| Biker Bling Limited | Wholesale & retail | 2014 |
| Bikun Services Ltd | Health & social care | 2024 |
| Billy & Aria Investment Ltd | Real estate | 2025 |
| Birds-I Precision Estimates Ltd | Professional & scientific | 2025 |
| Birmingham European Airways Ltd | Professional & scientific | 1999 |
| Bite Spicey Limited | Hospitality | 2023 |
| Bitsgroove Limited | Transport & logistics | 2022 |
| Bjgs Construction Ltd | Administrative & support | 2023 |
| BK Export Ltd | Wholesale & retail | 2025 |
| BL00M and Bal@Nce C.I.C. | Education | 2026 |
| Black Print Wondering Ltd | Manufacturing | 2022 |
| Blackbridge Developments Limited | Construction | 2025 |
| Blackheath Mart Ltd | Wholesale & retail | 2025 |
| Blackheath Mica Hardware Ltd | Wholesale & retail | 2026 |
| Blackheath Poundplus Ltd | Wholesale & retail | 2023 |
| Bless UP Housing Ltd | Real estate | 2024 |
| Bluedell Limited | Manufacturing | 2006 |
| Bobsun Electricals Ltd | Construction | 2013 |
| Boden Skips Ltd | Water & waste | 2015 |
| Bookworms Daycare Limited | Health & social care | 2012 |
| Bottle & Brew Limited | Wholesale & retail | 2005 |
| Bradleys Driving School Ltd | Education | 2024 |
| Brandrick Commercials Limited | Professional & scientific | 2008 |
| Breeze Installations Ltd | Manufacturing | 2010 |
| Brexit News and Times Limited | Information & communication | 2019 |
| Bridgemere Electrical Services Limited | Manufacturing | 2006 |
| Brilliant Web Design Ltd | Information & communication | 2023 |
| Britannia Global Trade Ltd | Wholesale & retail | 2023 |
| Britixo Software Solutions UK Ltd | Information & communication | 2026 |
| Broomfield Garage Limited | Wholesale & retail | 1985 |
| Brother Group Properties Ltd | Real estate | 2024 |
| Brothers Building Construction Ltd | Construction | 2023 |
| Browtasticuk Ltd | Other services | 2024 |
| Bruges Inns Ltd | Hospitality | 2021 |
| Brummie Runner Ltd | Transport & logistics | 2024 |
| BRY Rowley Limited | Hospitality | 2026 |
| BS Ducting Ltd | Construction | 2022 |
| BT Meizban Ltd | Real estate | 2024 |
| Budjet Garage Services Ltd | Wholesale & retail | 2017 |
| Buy Sofas Direct Limited | Extraterritorial | 2013 |
| Byatts Creations Ltd | Arts & recreation | 2019 |
| C & M ALL Metal Recovery Limited | Wholesale & retail | 2018 |
| Cali Nails BHM Ltd | Other services | 2016 |
| Caliente Entertainment Ltd | Hospitality | 2014 |
| Cannon Global Logistics Limited | Wholesale & retail | 2011 |
| Capital Round Ltd | Professional & scientific | 2022 |
| Carbon 300 Ltd | Professional & scientific | 2022 |
| Carepoint Limited | Health & social care | 2002 |
| Casing Management Services Limited | Professional & scientific | 1997 |
| Caspian Pizza Blackheath Ltd | Hospitality | 2023 |
| Central Impact CIC | Education | 2025 |
| Chahal Property Investments Ltd | Real estate | 2021 |
| Charmz Social Care Ltd | Health & social care | 2015 |
| Cheswicks Coffee Shop Ltd | Hospitality | 2003 |
| Chocodemic Ltd | Other services | 2021 |
| Chopshop Barbers Ltd | Other services | 2013 |
| Chris Barber Media Ltd | Professional & scientific | 2011 |
| Cinder Property Management Limited | Real estate | 2016 |
| Clean House With EVE Limited | Administrative & support | 2026 |
| Clifton Equity Ltd | Other services | 2024 |
| Cloudsharp Consultancy Services Limited | Information & communication | 2017 |
| Coco Crust Limited | Hospitality | 2025 |
| COE Engineering Ltd | Construction | 2024 |
| Cohort Tuition BH Ltd | Education | 2015 |
| Compact Car Centre Ltd | Wholesale & retail | 2020 |
| Computerz Technology Services Ltd | Information & communication | 2025 |
| Concrete Contractors Ltd | Construction | 2023 |
| Contemporary Hair Limited | Other services | 2011 |
| Control Freak (Uk/Eu) Ltd | Manufacturing | 2023 |
| Control Z Ltd | Professional & scientific | 2026 |
| Cookwithease Catering Services Limited | Hospitality | 2024 |
| Cookygan Limited | Manufacturing | 2024 |
| County Durham Practice Ltd | Health & social care | 2026 |