| Cozea Ltd | Administrative & support | 2019 |
| Cozee Bloom Ltd | Wholesale & retail | 2025 |
| Cozru Ltd | Information & communication | 2024 |
| Cozy Care Ltd | Health & social care | 2025 |
| Cozy Co Dwellings Ltd | Real estate | 2022 |
| Cozy Coves SA Limited | Hospitality | 2024 |
| Cozy Hands Healthcare Ltd | Health & social care | 2026 |
| Cozy Homes by Svar Ltd | Real estate | 2025 |
| Cozzy Catering Company Limited | Hospitality | 2015 |
| Cozzy Corner Apartments Ltd | Hospitality | 2024 |
| Cozzy Cuddle Ltd | Wholesale & retail | 2026 |
| CP Sipp Trustees Limited | Professional & scientific | 2003 |
| CP Ssas Trustees Limited | Professional & scientific | 2002 |
| CP UK Holdco Ltd | Financial services | 2024 |
| CP114 Limited | Real estate | 2020 |
| CPB Projects Limited | Professional & scientific | 2009 |
| CPF Commercial Limited | Financial services | 2014 |
| CPH Environmental Ltd | Professional & scientific | 2010 |
| CPL C.I.C. | Arts & recreation | 2025 |
| CPL Energy Consultant Ltd | Professional & scientific | 2016 |
| CPL Graphic Applications Limited | Information & communication | 2007 |
| CPM Health Care Limited | Health & social care | 2022 |
| CPM Pipework Services Limited | Construction | 2014 |
| Cpmc Property Limited | Real estate | 2013 |
| CPR Autoglazing Limited | Wholesale & retail | 2019 |
| CPR Building Services Ltd | Construction | 2026 |
| CPR Services Limited | Manufacturing | 2004 |
| CQB Consultancy Limited | Professional & scientific | 2016 |
| CQR Digital Ltd | Health & social care | 2025 |
| CQY Ltd | Extraterritorial | 2026 |
| CQY Properties Limited | Real estate | 2024 |
| CR Enterprise Ltd | Wholesale & retail | 2024 |
| CR Installations Ltd | Construction | 2025 |
| CR Renovations Limited | Real estate | 2021 |
| CR Steel Limited | Manufacturing | 2001 |
| CR8 Brands Ltd | Wholesale & retail | 2025 |
| CR8 Foods Ltd | Wholesale & retail | 2025 |
| Crab & COW Ltd | Hospitality | 2015 |
| Crabtreee Sellers Ltd | Wholesale & retail | 2025 |
| Crac Forage Ltd | Agriculture & fishing | 2023 |
| Cracan Drive Ltd | Transport & logistics | 2018 |
| Craddock Gatsby Ltd | Wholesale & retail | 2025 |
| Craft Queen Limited | Wholesale & retail | 2022 |
| Crafted Brickwork Ltd | Construction | 2024 |
| Crafters Academy Limited | Other services | 2018 |
| Craftworks Heritage Limited | Manufacturing | 2022 |
| Crafty F&B Limited | Hospitality | 2018 |
| Crafty PUB Group Ltd | Financial services | 2026 |
| Craftycupsupply Ltd | Wholesale & retail | 2023 |
| Craig Dean Devine Limited | Information & communication | 2021 |
| Craig Ferguson & Co LLP | | 2001 |
| Craig Middleton Maguire Ltd | Professional & scientific | 2016 |
| Craiova Mini Market Limited | Wholesale & retail | 2024 |
| Cranbrook (1932) Limited | Financial services | 2018 |
| Cranbrook (Estates) Limited | Real estate | 1993 |
| Cranbrook (Jewellers) Ltd | Wholesale & retail | 1989 |
| Crane Creatives Coast CIC | Education | 2023 |
| Cranhill Definitive Ltd | Transport & logistics | 2014 |
| Cranhill Farm Management Company Limited | Administrative & support | 2001 |
| Crank & Ratchet Bars Ltd | Hospitality | 2019 |
| Crank & Watt Limited | Wholesale & retail | 2023 |
| Crank Ventures Ltd | Wholesale & retail | 2025 |
| Cranky Fish Ltd | Professional & scientific | 2018 |
| Cranley Partnership Limited | Real estate | 2018 |
| Crash Damage Limited | Wholesale & retail | 2001 |
| Craven Street Holdings Limited | Financial services | 2014 |
| Cravings Leicester Ltd | Hospitality | 2025 |
| Crawford HR Services Ltd | Professional & scientific | 2024 |
| Crawford Property Investments Ltd | Real estate | 2022 |
| Crawley Accident Repair Centre Limited | Wholesale & retail | 2019 |
| Crawley Reliable Ltd | Transport & logistics | 2016 |
| Crazy Dog Management Ltd | Arts & recreation | 2024 |
| Crazy Ginger Limited | Wholesale & retail | 2016 |
| CRE3D Design Ltd | Professional & scientific | 2015 |
| CRE8 Group Ltd | Construction | 2021 |
| CRE8 Living Ltd | Construction | 2022 |
| CRE8 Properties Limited | Real estate | 2007 |
| CRE8DEV1 Ltd | Information & communication | 2022 |
| CRE8ED Living Limited | Construction | 2022 |
| Creamland Limited | Wholesale & retail | 2025 |
| Create 3D Limited | Professional & scientific | 2011 |
| Create a Brand Limited | Professional & scientific | 2010 |
| Create a Display Limited | Manufacturing | 2004 |
| Create Wellbeing CIC | Health & social care | 2025 |
| Created by TEN. Ltd | Information & communication | 2015 |
| Creathor Kids Ltd. | Extraterritorial | 2020 |
| Creating Change Ltd | Education | 2005 |
| Creating Diamonds Ltd | Professional & scientific | 2014 |
| Creation Care and Support Limited | Real estate | 2025 |
| Creation Developments and Maintenance Ltd | Real estate | 2018 |
| Creation Finishing Limited | Administrative & support | 2014 |
| Creation Holdings Limited | Real estate | 2018 |
| Creation Logics Limited | Professional & scientific | 2000 |
| Creations Vehicle Services Ltd | Wholesale & retail | 2022 |
| Creativ Studios Ltd | Information & communication | 2014 |
| Creative 10 Limited | Arts & recreation | 2024 |
| Creative Assembly Global Ltd | Professional & scientific | 2025 |
| Creative Attic Limited | Administrative & support | 2013 |
| Creative Builders (Midlands) Ltd | Construction | 2020 |
| Creative Care Limited | Health & social care | 2015 |