| Cedar & Stone Ltd | Construction | 2021 |
| Cedarways Residential Child Care Larkhill House Limited | Health & social care | 2018 |
| Ceiling Interior Systems Limited | Construction | 2017 |
| Celestial Supplies Ltd | Wholesale & retail | 2025 |
| Central Grounds Ltd | Administrative & support | 2005 |
| Central Property Services (Sutton) Ltd | Construction | 2021 |
| Central Scaffolding (Burton) Limited | Construction | 2002 |
| Central Staffing Solutions Ltd | Administrative & support | 2023 |
| Central Surgical Care Limited | Health & social care | 2011 |
| Centre Locked Ltd | Transport & logistics | 2024 |
| Century Consulting Ltd | Professional & scientific | 2024 |
| Cerana Limited | Manufacturing | 2004 |
| CFM Motorsport Ltd | Wholesale & retail | 2014 |
| CGM Property Consultants Limited | Professional & scientific | 2019 |
| CGM Property Holdings Ltd | Real estate | 2022 |
| CGW Transport Ltd | Administrative & support | 2015 |
| Chai O Clock UK Ltd | Hospitality | 2026 |
| Chainify Ltd | Wholesale & retail | 2025 |
| Chainlytix Ltd | Information & communication | 2025 |
| Chalky Composites Limited | Manufacturing | 2019 |
| Chanelle Aesthetics Ltd | Other services | 2022 |
| Change (2001) Ltd | Administrative & support | 2025 |
| Change Finance & Leasing Limited | Financial services | 2010 |
| Changing Perspective Psychological Consultancy Ltd | Health & social care | 2012 |
| Chapel Lane Consultancy Limited | Professional & scientific | 2016 |
| Chargenchill Ltd | Energy | 2021 |
| Charls-Speed Ltd | Transport & logistics | 2014 |
| Charmel Ltd | Wholesale & retail | 2012 |
| Charterwellsuk Limited | Wholesale & retail | 2023 |
| Chartwell Legal Services Limited | Extraterritorial | 2016 |
| Chartwell Tax Limited | Extraterritorial | 2011 |
| Chas Rail Limited | Professional & scientific | 2013 |
| Chase Locks and Services Ltd | Administrative & support | 2013 |
| Chbasit & Co Ltd | Education | 2018 |
| Cheadle Land NO.1 Limited | Construction | 2025 |
| Cheap Limited | Information & communication | 2020 |
| Chef Burton Limited | Hospitality | 2025 |
| Chef Lucas Catering Services Ltd | Hospitality | 2024 |
| Chelsea Kensington UK Real Estate & Property Management Services Ltd | Real estate | 2026 |
| Chelsea Pete Limited | Real estate | 2024 |
| Chenab Restaurant Limited | Hospitality | 2024 |
| Cherry Blossom Properties (Barton) Ltd | Real estate | 2024 |
| Chesterfield Car/Commercial Centre Ltd | Wholesale & retail | 2019 |
| Chill'D Drinks Limited | Manufacturing | 2023 |
| Chilton Court Ltd | Households | 1998 |
| Chinese Whispers Movie Limited | Information & communication | 2024 |
| Chocolate Hairdressing Limited | Other services | 2009 |
| Cholsey FOM Limited | Real estate | 2022 |
| Chord Space Solutions Ltd | Professional & scientific | 2016 |
| Chris Goodhead Photographic Limited | Other services | 2003 |
| Chris Poynton Limited | Wholesale & retail | 2003 |
| Christfull Solutions Ltd | Health & social care | 2025 |
| Christina Burton PM Solutions Ltd | Professional & scientific | 2025 |
| Churchill Management Consultants Ltd | Professional & scientific | 2008 |
| Churchley Asset Management Limited | Real estate | 2022 |
| Circulating Pumps Limited | Manufacturing | 2001 |
| Cismatics Ltd | Information & communication | 2025 |
| Citrine Topaz Ltd | Real estate | 2019 |
| City Electrical Services (Midlands) Limited | Construction | 2021 |
| City Heights Group Ltd | Construction | 2025 |
| Citylife in Lichfield Limited | Information & communication | 2016 |
| Civic Balance Ltd | Professional & scientific | 2025 |
| Civxk Ltd | Construction | 2026 |
| CJM Brickwork & Building Services Ltd | Construction | 2026 |
| CJM Facilitating Solutions Ltd | Education | 2023 |
| CJS UK Properties Ltd | Real estate | 2025 |
| CK168 Limited | Hospitality | 2016 |
| CKG Services Ltd | Administrative & support | 2026 |
| CKM Developments Ltd | Construction | 2025 |
| Clair Gordon Ltd | Administrative & support | 2026 |
| Clare Mullo Ltd | Manufacturing | 2016 |
| Clarity Psychotherapy Ltd | Health & social care | 2017 |
| Clarke 4X4 Ltd | Wholesale & retail | 2017 |
| Clarke Electrical Group Ltd | Construction | 2020 |
| Clarkson Accountancy Limited | Professional & scientific | 2016 |
| Classic Mounts Limited | Other services | 2013 |
| Claudan Transport Ltd | Transport & logistics | 2016 |
| Clay Oven Catering Ltd | Hospitality | 2026 |
| Clayton Equipment Group Limited | Professional & scientific | 2018 |
| Clean HIT (Cricket & Hockey) Limited | Wholesale & retail | 2015 |
| Clearfit Ltd | Manufacturing | 2024 |
| Clearlight Customs Limited | Professional & scientific | 2017 |
| Clearview Compliance Solutions Limited | Professional & scientific | 2025 |
| Clearview Glass Derby Limited | Construction | 2020 |
| Clearview Property Ltd | Real estate | 2017 |
| CLICKAWAY786 Limited | Wholesale & retail | 2019 |
| Clickup Point Ltd | Information & communication | 2014 |
| Cliffe Interiors Limited | Other services | 2019 |
| Clinicians Connected Limited | Administrative & support | 2016 |
| Clix Publishing Ltd | Information & communication | 2005 |
| Clix Records Ltd | Arts & recreation | 2005 |
| Cloud Town Stafford Ltd | Wholesale & retail | 2026 |
| Cloudflux Limited | Information & communication | 2025 |
| Club & Corporate Wear Ltd | Wholesale & retail | 2014 |
| CMF Recruitment Ltd | Professional & scientific | 2021 |
| CNR Ltd | Professional & scientific | 2024 |
| Coalville Skip Hire Limited | Extraterritorial | 2015 |
| Coco Airlie Consulting Ltd. | Professional & scientific | 2017 |
| Coco PUB Enterprises Limited | Hospitality | 2023 |
| Cognivation Ltd | Professional & scientific | 2019 |