| Coulman EOT Limited | Financial services | 2023 |
| Coulter Group Limited | Financial services | 2026 |
| Count Engineering Limited | Manufacturing | 2002 |
| Country Gardens Landscapes Ltd | Administrative & support | 2010 |
| Country Gardens Yorkshire Limited | Arts & recreation | 2012 |
| Country Kitchen Spencers Ltd | Hospitality | 2020 |
| Country Mile Properties Limited | Real estate | 2026 |
| Country Mill Limited | Real estate | 2020 |
| Countryside Services (Lincs) Limited | Agriculture & fishing | 2018 |
| Countrywide Property Services (Doncaster) Limited | Real estate | 2002 |
| Coupland Real Estates Ltd | Real estate | 2026 |
| Courier 4 Less Ltd | Transport & logistics | 2025 |
| Courier House Limited | Construction | 2016 |
| Couriers Delivery by DAN Limited | Transport & logistics | 2025 |
| Couriers Services KIM Ltd | Transport & logistics | 2025 |
| Courses for Jobs Ltd | Information & communication | 2012 |
| Court Venues Ltd | Hospitality | 2023 |
| Courtney’S Contracting Ltd | Wholesale & retail | 2026 |
| Cove Farm Ltd | Agriculture & fishing | 2017 |
| Cove Farm Quarry Limited | Mining & quarrying | 2014 |
| Covenant Liftings Ltd | Financial services | 2025 |
| Coverflat Limited | Real estate | 1995 |
| Covinil UK & Ireland Limited | Wholesale & retail | 2015 |
| Cowgirl City Ltd | Wholesale & retail | 2025 |
| Cowling & Cowling Ltd | Health & social care | 2006 |
| Cozamin Limited | Transport & logistics | 2020 |
| Cozy Carpets Ltd | Construction | 2016 |
| Cozycot Ltd | Wholesale & retail | 2025 |
| CP Advisory Limited | Administrative & support | 2024 |
| CP Assessments Limited | Other services | 2025 |
| CP Build Ltd | Construction | 2022 |
| CP CAP Ltd | Professional & scientific | 2026 |
| Cpac Services Limited | Professional & scientific | 2016 |
| CPL Properties Limited | Real estate | 2013 |
| CPR Joinery Limited | Construction | 2015 |
| CPS Manufacturing Co LLP | | 2013 |
| Cqcore Solutions Ltd | Other services | 2026 |
| CR Cladding Ltd | Construction | 2018 |
| CR Construct Ltd | Real estate | 2024 |
| CR H Property Ltd | Real estate | 2024 |
| CR Plant Limited | Construction | 2021 |
| CR Roofing & Cladding Limited | Construction | 2020 |
| CRA Delivery Ltd | Transport & logistics | 2023 |
| Craft and Creations Doncaster CIC | Information & communication | 2022 |
| Crafted Identity Ltd | Wholesale & retail | 2025 |
| Craggs Developments Limited | Construction | 2017 |
| Craig & Co Construction Limited | Construction | 2026 |
| Craig Atkinson Business Consultancy Ltd | Administrative & support | 2019 |
| Craig Hempshell Electrical Ltd | Construction | 2026 |
| Craig Megson Transportation Ltd | Transport & logistics | 2022 |
| Craig Ritchie Construction Limited | Construction | 2025 |
| Craig Wood Horizons Ltd | Education | 2025 |
| Craiova Transport Ltd | Transport & logistics | 2019 |
| Crane Construction Ltd | Construction | 2023 |
| Cranfield Estate Holdings LLP | | 2023 |
| Craven Environmental Holdings Limited | Financial services | 2022 |
| Craven Environmental Ltd | Construction | 2015 |
| Craven Property Investments Ltd | Real estate | 2025 |
| Craven Wildsmith (Commercial) Limited | Professional & scientific | 2020 |
| Craven Wildsmith (Retford) Ltd | Real estate | 2018 |
| Craven Wildsmith Property Management LLP | | 2017 |
| Cravens Properties Ltd | Real estate | 2017 |
| Crayden Wedding Photography Ltd | Other services | 2014 |
| Crazy EAT Limited | Information & communication | 2017 |
| CRB Drawing Services Ltd | Professional & scientific | 2001 |
| CRC Properties Limited | Construction | 2005 |
| Crea-Kids-Care Ltd | Education | 2025 |
| Cream Worx Limited | Wholesale & retail | 2023 |
| Create Corporation Limited | Financial services | 2022 |
| Create Facilities Management Ltd | Administrative & support | 2026 |
| Create Investment Properties Ltd | Real estate | 2015 |
| Create Knowledge Ltd | Education | 2021 |
| Create Living Ltd | Real estate | 2019 |
| Create Professional Services Ltd | Construction | 2012 |
| Create Projects Ltd | Real estate | 2020 |
| Create Properties Ltd | Construction | 2016 |
| Creation House Ltd | Professional & scientific | 2024 |
| Creative Archives Limited | Professional & scientific | 2020 |
| Creative Coach Development Ltd | Professional & scientific | 2024 |
| Creative Crowd Solutions Limited | Manufacturing | 2021 |
| Creative Push CIC | Education | 2021 |
| Creative Touch Aesthetics Ltd | Other services | 2024 |
| Creator X Ltd | Information & communication | 2023 |
| Creditline Holding Limited | Administrative & support | 2010 |
| Credland Consulting Services Ltd | Professional & scientific | 2025 |
| Creighton-Ward Wealth Limited | Financial services | 2017 |
| Cresacre Business Services Ltd | Administrative & support | 2025 |
| Crescent Holdings N3 Ltd | Real estate | 2023 |
| Cressfield Homes Limited | Construction | 2021 |
| Crestwick Partners Ltd | Extraterritorial | 2026 |
| Cretu Silviu Limited | Transport & logistics | 2021 |
| Crew CAB Conversions Limited | Wholesale & retail | 2016 |
| Crew Holdings Limited | Real estate | 2019 |
| Crew Mechanical Services Limited | Manufacturing | 1993 |
| Crew TM Ltd | Public administration | 2024 |
| Crewbox Ltd | Manufacturing | 2021 |
| Cridrag Transport Services Ltd | Transport & logistics | 2026 |
| Cringles Limited | Hospitality | 1999 |
| Crisis Care Solutions Limited | Administrative & support | 2021 |
| Crisnic Limited | Transport & logistics | 2025 |