| Barker and Sons Property Services Ltd | Construction | 2022 |
| Barnet Marine Centre Limited | Manufacturing | 1988 |
| Bartons Consultancy Ltd | Professional & scientific | 2025 |
| Beauty Alley Aesthetics Ltd | Other services | 2023 |
| Bella Living Ltd | Hospitality | 2021 |
| Bernard Chapman Organization Limited | Wholesale & retail | 1987 |
| Berryworld Group Holdings Limited | Financial services | 2022 |
| Berryworld Group Limited | Financial services | 2022 |
| Berryworld Limited | Wholesale & retail | 1993 |
| Berryworld Plus Limited | Agriculture & fishing | 2002 |
| BG Decorators Limited | Construction | 2023 |
| Bitmapdigital Ltd | Information & communication | 2020 |
| Black Pearl Associates Limited | Administrative & support | 2012 |
| Black-Ip Ltd | Information & communication | 2017 |
| Blanchflower Management Ltd | Arts & recreation | 2017 |
| BLT Events LLP | | 2013 |
| BLU Pixl Ltd | Information & communication | 2015 |
| Blue Locum Limited | Wholesale & retail | 2006 |
| Blue Moon Group Ltd. | Professional & scientific | 2002 |
| Blue Moon Limited | Extraterritorial | 2000 |
| Blue Rose Wealth Ltd | Professional & scientific | 2023 |
| Bluxstar Ltd | Wholesale & retail | 2021 |
| Bojim-Ola Properties Ltd | Real estate | 2025 |
| Bourne Projects Limited | Construction | 2024 |
| Bpcp Limited | Financial services | 2016 |
| Bradbury Farm Management Limited | Professional & scientific | 2009 |
| Brainstorm Events Limited | Hospitality | 2001 |
| Brislin Limited | Professional & scientific | 1991 |
| Britannia Wholesale Group Ltd | Wholesale & retail | 2025 |
| Broxbourne Big Local | Information & communication | 2019 |
| Broxbourne Cruising Club Limited | Education | 2003 |
| Broxbourne Food & Wine Ltd | Wholesale & retail | 2013 |
| Broxbourne Golf Limited | Hospitality | 2020 |
| Broxbourne Nails Ltd | Other services | 2018 |
| Broxbourne Rowing Club | Arts & recreation | 2019 |
| Broxbourne Rowing Club (Trading) Limited | Arts & recreation | 2021 |
| Broxbourne Sports Club | Arts & recreation | 2022 |
| Broxbournebury Mews Management Company Limited | Households | 1995 |
| Broxlea Mushroom Farm Limited | Construction | 2016 |
| Buckysventures Limited | Wholesale & retail | 2026 |
| Bullsland Estate Management Limited | Households | 2023 |
| Burns Design Limited | Professional & scientific | 2016 |
| Burnside Builders Limited | Construction | 2005 |
| Bury Farm (Estate Management) Limited | Real estate | 2013 |
| Busban Limited | Construction | 2017 |
| Business Advisory Limited | Financial services | 2023 |
| Bwng Limited | Information & communication | 2025 |
| Bykay Cosmetics Ltd | Manufacturing | 2026 |
| Byrver Flooring Limited | Wholesale & retail | 2016 |
| Bytyci Maintenance Ltd | Construction | 2025 |
| C a Chauffeurs Ltd | Transport & logistics | 2025 |
| CAD & BIM Services Ltd | Professional & scientific | 2018 |
| Cakes and Sugarcraft Supplies Ltd | Manufacturing | 2015 |
| Camille Speech and Language Ltd | Public administration | 2025 |
| Care Konnections CIC | Transport & logistics | 2025 |
| Careford Construction Limited | Construction | 1999 |
| Casa Bella Interiors & Design Limited | Professional & scientific | 2010 |
| Casa Network Ltd | Wholesale & retail | 2025 |
| Cassell Architects Limited | Professional & scientific | 2023 |
| Catapult Higher Limited | Information & communication | 2024 |
| Catapult Studio Limited | Professional & scientific | 2017 |
| Cate Campany Consulting Ltd | Professional & scientific | 2016 |
| Ccgk Limited | Extraterritorial | 2016 |
| Cdjmg Ltd | Information & communication | 2019 |
| CDU Limited | Health & social care | 2022 |
| Celtic Scaffolding (Penzance) Ltd | Construction | 2019 |
| Celtic Scaffolding Inc Ltd | Construction | 2019 |
| Century 12 Ltd | Professional & scientific | 2021 |
| Cezri Limited | Wholesale & retail | 2025 |
| CGM Consultancy Limited | Construction | 2022 |
| Chadwell Capital Ltd | Information & communication | 2017 |
| Chaim Holding Limited | Real estate | 2024 |
| Chalet VAL D'Abondance Limited | Real estate | 2009 |
| Chalis Admin Ltd | Administrative & support | 2017 |
| Chambers View (Management Co) Limited | Real estate | 2010 |
| Chantel King Ltd | Professional & scientific | 2020 |
| Charles Neilson Limited | Wholesale & retail | 2021 |
| Charlie Holding Ltd | Administrative & support | 2017 |
| Charming Choices Limited | Wholesale & retail | 2024 |
| Cheetah Sportswear Ltd | Wholesale & retail | 2015 |
| Chesham Care Limited | Health & social care | 2005 |
| Cheshunt Muslim Community (CMC) Ltd | Health & social care | 2024 |
| Chirika Limited | Health & social care | 2026 |
| Church on the Orchard Limited | Wholesale & retail | 2025 |
| Churchill Memorials Ltd | Manufacturing | 2017 |
| Citizenship & Visas Ltd | Professional & scientific | 2021 |
| City X Electrical Limited | Construction | 2004 |
| Cityw Ltd | Professional & scientific | 2019 |
| Cjapd Ltd | Professional & scientific | 2004 |
| Clacla Ltd | Information & communication | 2020 |
| Claremont Support Services Ltd | Other services | 2025 |
| Clarence Imaging Ltd | Health & social care | 2024 |
| Clarencia Dental Care Ltd | Health & social care | 2023 |
| Clarke Landscape Design Limited | Administrative & support | 2016 |
| Classic Foods (2002) Limited | Hospitality | 2002 |
| Clency Limited | Financial services | 2025 |
| Clientfolder Limited | Construction | 2005 |
| Clientframe Limited | Information & communication | 2025 |
| Clique Sports Management Limited | Professional & scientific | 2012 |
| Club Vass Active Holidays Limited | Administrative & support | 2010 |