| Blacktip Consultancy Ltd | Professional & scientific | 2011 |
| Blink Panthera Ltd | Wholesale & retail | 2025 |
| Bloxhams Goods Ltd | Manufacturing | 2025 |
| Blue Starfish Consulting Limited | Professional & scientific | 2007 |
| Bluneco Ltd | Financial services | 2018 |
| Bobcat Property Group Limited | Real estate | 2022 |
| Bodyplan Limited | Health & social care | 2011 |
| Bongereh Ltd | Wholesale & retail | 2024 |
| Booma Productions Limited | Information & communication | 2020 |
| Bossington Properties Limited | Real estate | 2006 |
| Boxit Websites Ltd | Information & communication | 2017 |
| Boyd & Partners Limited | Professional & scientific | 2022 |
| Bradfind (Holdings) Limited | Financial services | 2006 |
| Brightrock Capital Partners Ltd | Administrative & support | 2024 |
| Brilliance Reads Ltd | Information & communication | 2025 |
| Broken Flames Productions Ltd | Information & communication | 2020 |
| Bromhead Johnson Properties Limited | Real estate | 2017 |
| BSW Estates Limited | Construction | 2021 |
| BSW Land and Property Development Limited | Construction | 2021 |
| BSW Land and Property Limited | Construction | 2016 |
| Budmir Ltd | Wholesale & retail | 2022 |
| Burotec Limited | Information & communication | 2013 |
| Button Bashing Ltd | Arts & recreation | 2023 |
| BY Luwa Ltd | Wholesale & retail | 2020 |
| C2 Risk Ltd | Administrative & support | 2015 |
| Caerus Infosys Limited | Information & communication | 2008 |
| Callaghan Aviation Services Ltd | Manufacturing | 2022 |
| Camden People’S Alliance Ltd | Other services | 2024 |
| Canary Zero Ltd | Information & communication | 2023 |
| Carbon Catalyst Limited | Water & waste | 2020 |
| Carlsbend Limited | Professional & scientific | 2006 |
| Castiel Cloud Limited | Professional & scientific | 2025 |
| Catalin Ieremia Limited | Hospitality | 2017 |
| Catalyst Fuel Ltd | Manufacturing | 2025 |
| Catalyst Recruitment Services Ltd | Administrative & support | 2013 |
| Cavok Consulting Limited | Transport & logistics | 2004 |
| CC Electrics Ltd | Construction | 2014 |
| CC Property Services (NE) Limited | Real estate | 2025 |
| Century Health Education Kinetic | Professional & scientific | 2021 |
| CERTUS360 Limited | Professional & scientific | 2015 |
| Chalk+Chilli Ltd | Professional & scientific | 2023 |
| Changeyard Limited | Professional & scientific | 2024 |
| Chapter Twenty Four Ltd | Professional & scientific | 2024 |
| Charles Harvey Property Limited | Real estate | 2011 |
| Chase Lombard Law Limited | Professional & scientific | 2015 |
| Cherry Dating Ltd | Information & communication | 2021 |
| Cherry Films Limited | Information & communication | 2007 |
| Chopchop Noodles Ltd | Wholesale & retail | 2025 |
| Christopher Cleave Limited | Arts & recreation | 2004 |
| CK Talent Management Ltd | Administrative & support | 2021 |
| Claritus Wealth Ltd | Professional & scientific | 2011 |
| Clear Books Limited | Information & communication | 2008 |
| Click Group Services Ltd | Water & waste | 2025 |
| Clive O'Connell Consulting Limited | Professional & scientific | 2015 |
| Closer Sync Ltd | Wholesale & retail | 2025 |
| Cloudberries Ltd | Wholesale & retail | 2017 |
| Cloudberry Digital Limited | Professional & scientific | 2002 |
| Cmetrics Analytics Ltd | Information & communication | 2025 |
| Co-Flo Enterprise UK Ltd | Information & communication | 2025 |
| Cocoletor Holdings Limited | Real estate | 2022 |
| Cocoletor One Limited | Real estate | 2024 |
| Cocoletor Two Limited | Real estate | 2024 |
| Coffee With Ltd | Education | 2025 |
| Colin John Wadsworth Ltd | Information & communication | 2015 |
| Colour Electric Limited | Information & communication | 2023 |
| Common Purpose Community Limited | Professional & scientific | 2025 |
| Compass Accounts Ltd | Professional & scientific | 2019 |
| Compass Construction Southern Limited | Construction | 2009 |
| Competition Finance Limited | Professional & scientific | 2020 |
| Completable Limited | Information & communication | 2024 |
| Compliance on Demand Limited | Professional & scientific | 2018 |
| Concept for Concept Translations Ltd. | Professional & scientific | 2011 |
| Concepta Germany Limited | Administrative & support | 2008 |
| Connect 4 U Ltd | Professional & scientific | 2018 |
| Consult TEK Limited | Professional & scientific | 2014 |
| Consural Ltd | Administrative & support | 2025 |
| Corbyn Enterprises Ltd | Wholesale & retail | 2020 |
| Coreations Ltd | Information & communication | 2015 |
| Coremotion Solutions Limited | Information & communication | 2016 |
| Cornerstone Consults (UK) Ltd | Education | 2007 |
| Cornerstone GP Services Ltd | Health & social care | 2024 |
| Corporates Online Limited | Information & communication | 2007 |
| Cozy Nooks Ltd | Hospitality | 2024 |
| Cpdp Recordings Ltd | Information & communication | 2016 |
| Crawshaw Digital Consultancy Ltd | Information & communication | 2024 |
| Creator Funnels Limited | Professional & scientific | 2023 |
| Crispin Marine Limited | Professional & scientific | 2012 |
| Curatedx Limited | Professional & scientific | 2024 |
| Custom Backup Limited | Information & communication | 2025 |
| CVP Law Limited | Professional & scientific | 2017 |
| Cybernet Technologies Ltd | Information & communication | 2024 |
| Cyclo Foods Solutions Ltd | Manufacturing | 2015 |
| Cygnus Accounting Ltd | Professional & scientific | 2012 |
| Cygnus Capital Ltd | Other services | 2020 |
| D & C - Power Limited | Administrative & support | 2006 |
| D Campbell & Co. Ltd. | Professional & scientific | 2018 |
| Daas Nourel Islem Rayane Ltd | Information & communication | 2025 |
| Dalvini Limited | Other services | 2015 |
| Danb Group Ltd | Administrative & support | 2021 |
| Daniela SG Limited | Education | 2023 |