| Babsmayor Properties Ltd | Real estate | 2026 |
| Ball Sentry Group Ltd | Information & communication | 2026 |
| Balogiz Limited | Information & communication | 2023 |
| Basabs Limited | Professional & scientific | 2022 |
| Bata Transport Limited | Administrative & support | 2017 |
| BBQ Empress Ltd | Hospitality | 2016 |
| BEATINGLONLINESS4ALL CIC | Education | 2025 |
| Beaut Solutions Limited | Information & communication | 2017 |
| Beit EL Homes Ltd | Real estate | 2025 |
| Bexley & London Construction Limited | Construction | 2019 |
| BGB Services Limited | Health & social care | 2022 |
| Big Movie Makers Limited | Information & communication | 2024 |
| Big Recycling Limited | Water & waste | 2024 |
| Bimpz Holdings Limited | Real estate | 2025 |
| Binzo Ltd | Administrative & support | 2013 |
| BIS Trans Ltd | Transport & logistics | 2023 |
| Bitlabs Consulting Ltd | Information & communication | 2018 |
| Black Flame Digital Ltd | Information & communication | 2019 |
| Black Nectar Ltd | Wholesale & retail | 2026 |
| Black Talent Development CIC | Education | 2026 |
| Blero Logistics Ltd | Construction | 2021 |
| Blissful Trips Ltd | Administrative & support | 2024 |
| Blue Occean Ltd | Health & social care | 2018 |
| Bluepeakdistro Ltd | Wholesale & retail | 2025 |
| Bluetier Services Limited | Information & communication | 2026 |
| BMB Trans Ltd | Transport & logistics | 2018 |
| BMD Analytics Ltd | Information & communication | 2017 |
| BMG Works Limited | Information & communication | 2017 |
| Bodh Consulting Ltd | Education | 2026 |
| Boilers R US London Limited | Construction | 2025 |
| Bolamas Limited | Health & social care | 2019 |
| Bombones Limited | Manufacturing | 2022 |
| Booze Mini Mart Ltd | Wholesale & retail | 2020 |
| Bovic Limited | Transport & logistics | 2011 |
| Braided - Lets Braid Limited | Arts & recreation | 2023 |
| Breaking Limits Ltd | Real estate | 2020 |
| Brightdaysahead Services Ltd | Administrative & support | 2021 |
| Brightpath Services Limited | Administrative & support | 2025 |
| Broadnet Tech and Logistics Ltd | Financial services | 2025 |
| Brunos Care Agency Ltd | Administrative & support | 2023 |
| Brv-Transports Ltd | Transport & logistics | 2019 |
| BT Property Services Ltd | Construction | 2015 |
| Bubugees Ltd | Health & social care | 2019 |
| Bukk Global Property Ltd | Real estate | 2025 |
| Bull Cars Limited | Wholesale & retail | 2016 |
| Business Intelligence & Analytics UK Ltd | Information & communication | 2026 |
| Butterfly Asset Management Ltd | Construction | 2021 |
| Bvot Consulting Ltd | Professional & scientific | 2024 |
| C.D.& a. Limited | Transport & logistics | 2011 |
| Cado Fashions Ltd | Wholesale & retail | 2024 |
| Cahia Care Ltd | Health & social care | 2015 |
| Caledonian Envelopes Ltd | Wholesale & retail | 2000 |
| Calm Threads Limited | Wholesale & retail | 2024 |
| Car Key Experts Ltd | Other services | 2021 |
| Carelux Support Services Ltd | Health & social care | 2020 |
| Carrissglam Ltd | Professional & scientific | 2019 |
| Carthy RC Frames & Civils Ltd | Construction | 2025 |
| CAS Community Solutions CIC | Education | 2014 |
| Casa 4D’S Limited | Real estate | 2025 |
| Castlefields Building Contractors Limited | Administrative & support | 2022 |
| Castleton Ventures Limited | Financial services | 2026 |
| Catalytic Properties Ltd | Real estate | 2020 |
| CCB Consultancy Management Trading Company Ltd | Wholesale & retail | 2019 |
| CDP Heating Services Ltd | Construction | 2020 |
| Ceedee Ventures Ltd | Construction | 2015 |
| Charlotte House Property Management Ltd | Real estate | 2024 |
| Chedex Services Limited | Health & social care | 2019 |
| Chelsdom Limited | Wholesale & retail | 2026 |
| Cherelle JAY Creative Ltd | Professional & scientific | 2021 |
| Chic Boutique Ltd | Wholesale & retail | 2025 |
| Chic Vogue Collections Limited | Wholesale & retail | 2026 |
| Childspace Limited | Health & social care | 2024 |
| Chopra Dental Ltd | Health & social care | 2024 |
| Chriskela Ltd | Transport & logistics | 2015 |
| Chrisom Health Ltd | Health & social care | 2019 |
| Christak Innovations Limited | Transport & logistics | 2024 |
| Cindy LOU Ltd | Wholesale & retail | 2025 |
| Circa London Ltd | Information & communication | 2024 |
| Citybrand Global Ltd | Construction | 2021 |
| Client Code Agency Ltd | Professional & scientific | 2024 |
| Client Horizons Limited | Information & communication | 2013 |
| Cloud Data Limited | Information & communication | 2024 |
| Cloudex Group Limited | Information & communication | 2024 |
| Cman Consulting Services Limited | Other services | 2013 |
| Cobeige Ltd | Wholesale & retail | 2022 |
| Code Highway Ltd | Information & communication | 2024 |
| Codeai Homes Ltd | Real estate | 2026 |
| Codeai Ltd | Information & communication | 2019 |
| Codemod Limited | Information & communication | 2024 |
| Cogit Matida (UK) Ltd | Information & communication | 2011 |
| Commercial Inc. Ltd | Professional & scientific | 2019 |
| Community Dols UK Limited | Health & social care | 2013 |
| Complete Rehabilitation Limited | Health & social care | 2013 |
| Construction Work GMA Ltd | Construction | 2026 |
| Controlled Heating Services Limited | Manufacturing | 2021 |
| Coolie Limited | Wholesale & retail | 2023 |
| Coral Care Services Ltd | Health & social care | 2024 |
| Coranet Limited | Information & communication | 2010 |
| Cpeace Limited | Health & social care | 2023 |
| CR Consulting Ltd | Professional & scientific | 2026 |