| Carers and Companions Limited | Health & social care | 2003 |
| Carisbrooke Estates Limited | Real estate | 2017 |
| Carisbrooke Financial Consulting Limited | Professional & scientific | 2026 |
| Carl Heyes Transport Limited | Transport & logistics | 2015 |
| Carl Holderness Design Ltd | Professional & scientific | 2020 |
| Carleton Mill Management Company Limited | Extraterritorial | 2002 |
| Carolina Shiribelli Ltd | Other services | 2023 |
| Carr Croft Court Limited | Households | 1977 |
| Carr Croft Management Limited | Households | 1995 |
| Caseby Properties Ltd | Real estate | 2024 |
| Cash Flow for Healthcare Limited | Health & social care | 2021 |
| Castle Corner Limited | Real estate | 1998 |
| Castle Court Helmsley Limited | Households | 1997 |
| Castlefield Lane Limited | Real estate | 2017 |
| Castlefields Bingley (Management) Limited | Households | 2018 |
| Castleton Property Investments Ltd | Real estate | 2020 |
| Castra Site Solutions Ltd | Administrative & support | 2020 |
| Catalysa Limited | Professional & scientific | 2005 |
| Catering Yorkshire Corporate Limited | Hospitality | 2019 |
| Cathedral Financial Planning (UK) Ltd | Financial services | 2014 |
| Cattle Genie Limited | Agriculture & fishing | 2015 |
| Cavadas Cafe Ltd | Hospitality | 2019 |
| Cavanagh Holdings Limited | Financial services | 2025 |
| Ccemc Ltd | Real estate | 2025 |
| Cedar Valley Property Ltd | Real estate | 2024 |
| Cedarwell Ltd | Construction | 2017 |
| CEL Property Group Ltd | Real estate | 2026 |
| Celina Development Ltd | Real estate | 2025 |
| Central Cinemas Limited | Information & communication | 2024 |
| CES Holdco Ltd | Financial services | 2021 |
| CES Residential Properties Ltd | Real estate | 2021 |
| CF Developments Limited | Real estate | 2019 |
| CFL Property Investments Ltd | Real estate | 2025 |
| CFP Group Commercial Limited | Financial services | 2023 |
| CFP Group Limited | Financial services | 2019 |
| CFP Group Residential Limited | Financial services | 2018 |
| CGS Burley Ltd | Financial services | 2025 |
| Chadwick International Transport Limited | Transport & logistics | 2016 |
| Chameleon Software Solutions Limited | Information & communication | 1994 |
| Chantry Court (Ilkley) Management Limited | Households | 1981 |
| Chapel Court (Addingham) Management Company Limited | Households | 2015 |
| Chapel House Management Limited | Households | 1986 |
| Chapel House Mews Management Company Limited | Households | 2001 |
| Character Search Ltd | Administrative & support | 2015 |
| Charles Hill Consultancy Ltd | Real estate | 2022 |
| Charlie Mcintosh Limited | Administrative & support | 2017 |
| Charlies Ltd | Wholesale & retail | 2013 |
| Cheap Accounts Company Limited | Extraterritorial | 2003 |
| Cheltenham Fold Management Co. Ltd | Extraterritorial | 2014 |
| Cherry Lawn Lettings Ltd | Real estate | 2021 |
| Cherrystone Property Wealth Ltd | Real estate | 2026 |
| Chesterfield Home Care Limited | Health & social care | 2011 |
| Chevin Educational Psychology Limited | Education | 2022 |
| Chevin END Guest House Ltd | Hospitality | 2018 |
| Chevin Retail Limited | Wholesale & retail | 2013 |
| Choice Analysis and Training Ltd | Professional & scientific | 2016 |
| Christian Doherty Limited | Information & communication | 2012 |
| Christian White Rare Books Ltd | Wholesale & retail | 2012 |
| Christie's Tailors Ltd | Wholesale & retail | 2018 |
| Chrysalis Property Investments Ltd | Real estate | 2025 |
| Chryspre Ltd | Real estate | 2026 |
| Cinemac Limited | Arts & recreation | 2013 |
| City Confidential Limited | Extraterritorial | 1993 |
| City of Nature CIC | Administrative & support | 2023 |
| Citygate Capital Limited | Financial services | 2018 |
| Civil Safety Drainage Limited | Water & waste | 2018 |
| Civil Safety Tankering Ltd | Other services | 2018 |
| CJA Property Management (Yorkshire) Limited | Real estate | 2017 |
| CJM Pudsey Limited | Professional & scientific | 2005 |
| Claire Wareham Limited | Other services | 2018 |
| Claybear Official Limited | Wholesale & retail | 2021 |
| Clayful Ltd | Hospitality | 2024 |
| Clean & Care Facilities Management Limited | Wholesale & retail | 2014 |
| Clean Piece Collective Ltd | Wholesale & retail | 2026 |
| Clear Comms UK Ltd | Information & communication | 2024 |
| Cleasby Court Management Company Limited | Households | 2009 |
| Clifton & York Limited | Real estate | 2018 |
| Clifton Road (BEN Rhydding) Limited | Households | 2015 |
| Clinical Clarity Ltd | Health & social care | 2023 |
| Clipnclimb (Ilkley) Ltd | Arts & recreation | 2015 |
| Clubhub-Uk Ltd | Professional & scientific | 2022 |
| CMA Building Surveyors Ltd | Professional & scientific | 2014 |
| Cmpnd Technologies Ltd | Information & communication | 2025 |
| Cneasu Limited | Health & social care | 2025 |
| Cnm.I.A.M Ltd | Real estate | 2025 |
| Coach Mentoring Ltd | Professional & scientific | 2004 |
| Coached by Tosca Ltd | Other services | 2023 |
| Cobra IT Consultancy Ltd | Information & communication | 2016 |
| Cockerwood Limited | Real estate | 2022 |
| Coffey & Co Limited | Professional & scientific | 2019 |
| COH Wine Bar Limited | Hospitality | 2014 |
| Collaborate NOW Ltd | Professional & scientific | 2025 |
| Comfort Retreats Ltd | Real estate | 2025 |
| Comfy Sofa Limited | Manufacturing | 2011 |
| Comhar and Calpa Limited | Administrative & support | 2022 |
| Communico Telecom Limited | Information & communication | 2019 |
| Community Cutlery Ltd | Wholesale & retail | 2021 |
| Complete Linen Services (Yorkshire) Limited | Other services | 2026 |
| Complete Service Solutions Ltd | Administrative & support | 2017 |
| Complex Systems Associates Limited | Professional & scientific | 2015 |