| Clickbloom Ltd | Professional & scientific | 2026 |
| Client Asset Management Ltd | Professional & scientific | 2025 |
| Cliff Court Cliff Road Limited | Households | 1999 |
| Cliff Farm Feeds Ltd | Wholesale & retail | 2022 |
| Cliff Hill Day Nursery Limited | Health & social care | 2018 |
| Cliff Oaks NO. 2 Limited | Real estate | 2020 |
| Cliff's Professional Fencing and Paving Limited | Construction | 2017 |
| Clifford Heating Services Ltd | Construction | 2016 |
| Clifford LAX 1919 Limited | Real estate | 2014 |
| Clifford LAX Finance Ltd | Financial services | 2017 |
| Clinfinity Ltd | Real estate | 2019 |
| CLM Scaffolding Ltd | Construction | 2023 |
| Closha Associates Ltd | Professional & scientific | 2017 |
| Cloud Blue Alcr Ltd | Information & communication | 2023 |
| Cloud Developments Limited | Real estate | 2006 |
| Cloud Guru Tech Limited | Information & communication | 2023 |
| Cloud Nine by Design Ltd | Professional & scientific | 2025 |
| Cloud Tech IT Solutions Limited | Information & communication | 2022 |
| Cloudcert Ltd. | Information & communication | 2013 |
| Clover Access Systems Limited | Construction | 2021 |
| Clover Stone & Brickwork Limited | Construction | 2002 |
| CLP Air Group Limited | Manufacturing | 1999 |
| CLS Property LLP | | 2012 |
| Club Travel Ltd | Transport & logistics | 2013 |
| Clubby Wraparound Crofton Limited | Health & social care | 2026 |
| Clutchfix Limited | Manufacturing | 2016 |
| CLW Heating Ltd | Construction | 2023 |
| CM Cable Jointing Ltd | Professional & scientific | 2024 |
| CML Compensation Management Limited | Administrative & support | 2019 |
| CMN Accountancy Services Ltd | Professional & scientific | 2007 |
| CMR Solutions Limited | Information & communication | 2021 |
| CMS (Yorkshire) Ltd | Professional & scientific | 2010 |
| CN Digital Ltd | Information & communication | 2025 |
| CNC Projects Ltd | Construction | 2023 |
| CNJ Taping Interiors Ltd | Construction | 2026 |
| CNS Waste Ltd | Water & waste | 2022 |
| Co Manufacturing Limited | Construction | 2005 |
| Co SSC Ltd | Education | 2023 |
| Coactive Arts | Health & social care | 2012 |
| Coalface Planning Limited | Professional & scientific | 2018 |
| Coats Interiors Limited | Professional & scientific | 2017 |
| Cobham Parade Block Number One Residents Management Company Limited | Households | 1994 |
| Cobham Parade Block Number One Residents Property Management Company Limited | Households | 2026 |
| Cobham Parade Block Number Two Residents Management Company Limited | Real estate | 1994 |
| Cobrook Energy Consulting Ltd | Professional & scientific | 2025 |
| Cockerham Services Ltd | Wholesale & retail | 2008 |
| Cockley Woodland Wellness Limited | Arts & recreation | 2022 |
| Code Red IT Ltd | Information & communication | 2022 |
| Codecentrated Limited | Administrative & support | 2005 |
| Codevolve Ltd | Information & communication | 2024 |
| COE Locums Ltd | Health & social care | 2015 |
| Coeur DE Xocolat Limited | Hospitality | 2012 |
| Coe’S Bespoke Renovations Ltd | Construction | 2024 |
| Coffeewrite Ltd | Wholesale & retail | 2024 |
| Cogent Claims Limited | Administrative & support | 2014 |
| Cogent Operational Services Limited | Extraterritorial | 2022 |
| Cogent Services Group Limited | Financial services | 2021 |
| Cognitech Consulting Ltd | Information & communication | 2004 |
| Coil Equipment Warehouse Limited | Extraterritorial | 1988 |
| Cold Cuppa Ltd | Wholesale & retail | 2025 |
| Cold Retention Limited | Administrative & support | 2014 |
| Coleco Ltd | Professional & scientific | 2022 |
| Coletta & Co Ltd | Construction | 2025 |
| Coletta Group Ltd | Financial services | 2022 |
| Colibri Limited | Information & communication | 2013 |
| Colin Hood Auto Electrical Limited | Manufacturing | 2011 |
| Collanade Ventures Ltd | Extraterritorial | 2024 |
| Collective Commercial Properties Ltd | Real estate | 2025 |
| Collector Cartel Ltd | Wholesale & retail | 2025 |
| College Grove Estates Limited | Real estate | 2017 |
| College Grove Flats Management Company Limited | Administrative & support | 2013 |
| College Grove Holdings Limited | Financial services | 2017 |
| College Grove Nursery Limited | Arts & recreation | 2006 |
| Colocool Ltd | Transport & logistics | 2026 |
| Colombian Coffee Cartel Ltd | Wholesale & retail | 2026 |
| Colorectal&General Surgical Services Ltd | Health & social care | 2014 |
| Colour-Tec (Yorkshire) Ltd | Construction | 2016 |
| Combat Base Dewsbury Ltd | Arts & recreation | 2025 |
| Combat Base Wakefield Ltd | Education | 2025 |
| Comfort & I UK Limited | Wholesale & retail | 2013 |
| Comfort Heritage Limited | Real estate | 2024 |
| Comforting Care Limited | Health & social care | 2019 |
| Comfyz Ltd | Wholesale & retail | 2024 |
| Commander Handling Limited | Wholesale & retail | 2015 |
| Commercial Fitouts UK Limited | Construction | 2020 |
| Commercial Select Limited | Financial services | 2024 |
| Commfits Ltd | Construction | 2025 |
| Communication Rocks Ltd | Extraterritorial | 2014 |
| Community Foundation for Wakefield | Other services | 2007 |
| Comodo Living Ltd | Manufacturing | 2023 |
| Compac UK Limited | Wholesale & retail | 2007 |
| Compact Compression Ltd | Wholesale & retail | 2023 |
| Company Image Limited | Professional & scientific | 1988 |
| Compatic Limited | Professional & scientific | 2009 |
| Compell Care Limited | Health & social care | 2020 |
| Complete Access (Scaffolding) Limited | Construction | 2010 |
| Complete Business Solutions Investments Limited | Financial services | 1999 |
| Complete Care (Wakefield) Limited | Real estate | 2011 |
| Complete Care West Yorkshire Ltd | Other services | 2007 |
| Complete Circle Training Solutions Limited | Extraterritorial | 2018 |