| COW Corner Investments (NO. 9) Bidco Limited | Financial services | 2026 |
| COW Corner Investments (NO.10) Bidco Limited | Financial services | 2026 |
| COW Corner Investments (NO.10) Limited | Financial services | 2026 |
| COW Corner Investments (NO.10) Midco Limited | Financial services | 2026 |
| COW Corner Investments (NO.2) Limited | Financial services | 2019 |
| COW Corner Investments (NO.3) Limited | Financial services | 2019 |
| COW Corner Investments (NO.6) Limited | Financial services | 2022 |
| COW Corner Investments (NO.8) Limited | Financial services | 2024 |
| COW Corner Investments (NO.9) Limited | Financial services | 2026 |
| COW Corner Investments (NO.9) Midco Limited | Financial services | 2026 |
| COW Corner Liquids Limited | Financial services | 2018 |
| COW Corner Nominees Limited | Financial services | 2023 |
| COW Store Limited | Wholesale & retail | 2025 |
| Cowboy Boots Ltd | Wholesale & retail | 2003 |
| Cowx Ltd | Professional & scientific | 2010 |
| Coxys Cookhouse Ltd | Hospitality | 2019 |
| COZ I CAN Ltd | Arts & recreation | 2018 |
| COZ I CAN Productions Ltd | Information & communication | 2024 |
| Cozy Inns Worthing Limited | Hospitality | 2004 |
| Cozyglowheating Ltd | Construction | 2025 |
| CP Sussexsurveyors Ltd. | Administrative & support | 2005 |
| CPE Properties Southern Ltd | Real estate | 2020 |
| Cpmk Limited | Real estate | 2004 |
| CPS Decorating & Building Services Limited | Construction | 2017 |
| Cpthorne Limited | Information & communication | 2016 |
| CQ Wrestling Ltd | Information & communication | 2025 |
| CR Chelsea Ltd | Real estate | 2025 |
| Cradle of Success Corporation Limited | Administrative & support | 2020 |
| Craft and Barrel Limited | Wholesale & retail | 2017 |
| Craft Soda Limited | Professional & scientific | 2020 |
| Craft Sussex Beers Ltd | Wholesale & retail | 2020 |
| Crafting Light Ltd | Administrative & support | 2018 |
| Craftwerk Ltd | Real estate | 2015 |
| Craftwood Interiors Limited | Manufacturing | 2000 |
| Cragg Management Services Limited | Professional & scientific | 2002 |
| Craic Consultants Limited | Information & communication | 2011 |
| Craig Construction Services Ltd | Construction | 2022 |
| Craig Developments Worthing Ltd | Financial services | 2021 |
| Craig Moore Ltd | Information & communication | 2011 |
| Cranfield Performance Limited | Arts & recreation | 2024 |
| Cranks Bikes Ltd | Wholesale & retail | 2021 |
| Cranley Dene Management Company Limited | Households | 2002 |
| Crave Productions Ltd | Information & communication | 2024 |
| Cravinn Limited | Hospitality | 2021 |
| Crawffish Media Limited | Information & communication | 2012 |
| Crawley Marketing Ltd | Professional & scientific | 2022 |
| Crawley Scaffolding Limited | Construction | 2018 |
| CRE8 Digital Limited | Information & communication | 2011 |
| CRE8 Digital Media Ltd | Information & communication | 2023 |
| CRE8 Zero Ltd | Construction | 2023 |
| Crea Design Limited | Extraterritorial | 2005 |
| Cream Consultants Ltd | Professional & scientific | 2020 |
| Cream HR Limited | Professional & scientific | 2000 |
| Create Brighton Limited | Construction | 2024 |
| Create Content Ltd | Professional & scientific | 2016 |
| Create for YOU (Developments) Limited | Construction | 2017 |
| Create Internet Ltd | Information & communication | 1999 |
| Create Space Retreats Ltd | Administrative & support | 2020 |
| Create Space Workshops Ltd. | Administrative & support | 2020 |
| Created by Catalyst Ltd | Information & communication | 2024 |
| Createscene Ltd | Information & communication | 2022 |
| Createshift Ltd | Information & communication | 2012 |
| Creation Capital Limited | Construction | 2015 |
| Creation Igaming Ltd | Information & communication | 2020 |
| Creationlace Ltd | Arts & recreation | 2011 |
| Creative Blend Limited | Professional & scientific | 2016 |
| Creative Bloke Limited | Information & communication | 2012 |
| Creative Bloom Ltd. | Professional & scientific | 2014 |
| Creative Construction (South) Limited | Construction | 2023 |
| Creative Construction Business Limited | Construction | 2015 |
| Creative Cortex Ltd | Information & communication | 2019 |
| Creative Cruises Ltd | Administrative & support | 2004 |
| Creative Expanse Limited | Construction | 2015 |
| Creative Florence Limited | Arts & recreation | 2014 |
| Creative Future Limited | Education | 2009 |
| Creative Key Solutions Ltd. | Information & communication | 2008 |
| Creative Law & Business Limited | Professional & scientific | 2009 |
| Creative Loafing Limited | Administrative & support | 2008 |
| Creative Nails Brighton Ltd | Other services | 2022 |
| Creative Potential Ltd | Wholesale & retail | 2024 |
| Creative Process Digital Ltd | Information & communication | 2014 |
| Creative Screen Associates Limited | Information & communication | 2011 |
| Creative Side Structures Ltd | Professional & scientific | 2018 |
| Creative State Ltd | Real estate | 2022 |
| Creative Think Space Limited | Professional & scientific | 2023 |
| Creative Werkplaces Ltd | Administrative & support | 2015 |
| Creatives in Collaboration Limited | Professional & scientific | 2021 |
| Creativity Calling CIC | Education | 2023 |
| Credence Way Management & Consultant Ltd | Construction | 2019 |
| Creditcard Optimisation Limited | Professional & scientific | 1995 |
| Creed Design Associates Limited | Professional & scientific | 1999 |
| Creed Property Solutions Ltd | Real estate | 2023 |
| Creeping Jean Ltd | Arts & recreation | 2025 |
| Crepeaffaire Limited | Wholesale & retail | 2004 |
| Crescendo Solutions Ltd | Information & communication | 2024 |
| Crescent Mansions (Ditchling Road, Brighton) Residents Association Limited | Households | 1975 |
| Crespo Design Limited | Other services | 2011 |
| Crestway Food & Wine Limited | Wholesale & retail | 2023 |
| Crestwell Advisory Ltd | Professional & scientific | 2026 |
| Crete Hospitality Limited | Hospitality | 2025 |