| Carlyon Limited | Professional & scientific | 2021 |
| Carrington GAS & Heating Ltd | Construction | 2021 |
| Carrot Solutions Ltd | Administrative & support | 2026 |
| Carsmith Midlands Ltd | Manufacturing | 2022 |
| Carter Street Management Company Limited | Extraterritorial | 2012 |
| Casa Eleven Ltd | Real estate | 2021 |
| Castle Commercials International Ltd | Wholesale & retail | 2025 |
| Catch 22 Solutions Limited | Professional & scientific | 2003 |
| Cava Estates Ltd | Real estate | 2023 |
| Caverswall Quality Consultants Ltd | Professional & scientific | 2019 |
| Cbjm Services Limited | Administrative & support | 2019 |
| Central GAS Safety Limited | Construction | 2014 |
| Central Hydraulics UK Limited | Manufacturing | 2008 |
| Central Knee Surgeon Limited | Health & social care | 2020 |
| Charles Martin Watch Company Limited | Wholesale & retail | 2016 |
| Charles Martin Watches Limited | Wholesale & retail | 2022 |
| Charlie Haynes Ltd | Other services | 2025 |
| Chartley Projects Limited | Professional & scientific | 2024 |
| Chase Hardware Limited | Wholesale & retail | 1978 |
| Chatting Properties Limited | Real estate | 2008 |
| Chetserve Limited | Professional & scientific | 2022 |
| Chill Factor Commissioning Ltd | Manufacturing | 2006 |
| Chris Hassall Ltd | Professional & scientific | 2002 |
| Chris Hodgkinson Kitchens and Bedrooms Limited | Construction | 2002 |
| Cireniale Ltd | Wholesale & retail | 2023 |
| Cirqit Limited | Manufacturing | 2025 |
| CJ Steel Framing Ltd | Construction | 2026 |
| CJL Racing Limited | Wholesale & retail | 2022 |
| Clean&Tidyhomes Ltd | Administrative & support | 2026 |
| Cleaning Genius Service Ltd | Administrative & support | 2023 |
| Clearpath UK Limited | Hospitality | 2004 |
| Clixby's Forestry Ground Prep Limited | Agriculture & fishing | 2003 |
| CMP Group Ltd | Administrative & support | 2017 |
| CMS Construction & Groundworks Ltd | Construction | 2023 |
| CMS Contractors (Midlands) Limited | Construction | 2014 |
| CMS Programme Delivery Limited | Information & communication | 2026 |
| CMS Properties & Mortgages Limited | Financial services | 2024 |
| Coates Chimney Sweeping Ltd | Administrative & support | 2013 |
| Cobalt Construction Ltd | Construction | 2003 |
| Cocolabs Innovations Limited | Information & communication | 2025 |
| Cod's Corner Ltd | Hospitality | 2019 |
| Code 56 Limited | Information & communication | 2016 |
| Collections Holdings Ltd | Wholesale & retail | 2024 |
| Colour Revealing Limited | Health & social care | 2018 |
| Commerce Capital Ltd | Wholesale & retail | 2019 |
| Commercial Finance Services Limited | Financial services | 2003 |
| Community Medical Services Limited | Health & social care | 2006 |
| Compass Rose Management Ltd | Real estate | 2025 |
| Concours Tyre and Rubber Products International Limited | Manufacturing | 1999 |
| Connections Hub Limited | Education | 2021 |
| Controlgb Limited | Manufacturing | 2024 |
| Corbishley Consulting Limited | Professional & scientific | 2015 |
| Core (Hardware) Imports Limited | Wholesale & retail | 2025 |
| Cotton Mill Cars Ltd | Wholesale & retail | 2025 |
| Cottonmill Farm Limited | Agriculture & fishing | 2008 |
| Courtrelay Limited | Real estate | 1998 |
| Cowells Caravan Services Limited | Other services | 2018 |
| Coyle Renovation & Rental Ltd | Real estate | 2019 |
| Crakemarsh Consulting Limited | Professional & scientific | 2017 |
| Crakemarsh Property Company Ltd | Other services | 2021 |
| Crane Entertainment Ltd | Information & communication | 2025 |
| Creation Home Interiors Limited | Construction | 2025 |
| Creation Interiors Group Limited | Wholesale & retail | 2022 |
| Creation Office Ltd | Wholesale & retail | 2021 |
| Creative Research Methods Ltd | Administrative & support | 2022 |
| Creative Technology (Microdesign) Limited | Information & communication | 1989 |
| Crew 2 Inspire Ltd | Extraterritorial | 2022 |
| Cropwell IT Services Limited | Information & communication | 2014 |
| Croxden Consultancy Services Ltd | Professional & scientific | 2013 |
| CSD Stores Ltd | Wholesale & retail | 2024 |
| CT Wholesale Ltd | Wholesale & retail | 2024 |
| CTR (Collections) Ltd | Wholesale & retail | 2014 |
| CTR (Enviro) Limited | Manufacturing | 2014 |
| CTR (Fulfillment) Limited | Wholesale & retail | 2014 |
| CTR (Grading) Ltd | Wholesale & retail | 2020 |
| CTR (Group) Limited | Wholesale & retail | 2014 |
| CTR Recover Limited | Water & waste | 2022 |
| CW Property Repairs Limited | Construction | 2026 |
| D & K Builders Ltd | Construction | 2022 |
| D Gibson Contracting Ltd | Mining & quarrying | 2023 |
| D Green Tree Care Ltd | Administrative & support | 2025 |
| D J Litchfield Limited | Agriculture & fishing | 2015 |
| D L Tyres Ltd | Wholesale & retail | 2026 |
| D Povey Ltd | Arts & recreation | 2024 |
| D&H Fabrication (Midlands) Limited | Manufacturing | 2005 |
| DAB Hands (UK) Limited | Administrative & support | 2003 |
| Dahan Limited | Professional & scientific | 2007 |
| Daisy Ball Property Limited | Real estate | 2014 |
| Daisy Chain (Uttoxeter) Limited | Wholesale & retail | 2012 |
| Dakota Biotech (UK) Ltd | Wholesale & retail | 2021 |
| Damara 3 Co-Owners Ltd | Hospitality | 2017 |
| Dancing Dudes Ltd | Professional & scientific | 2025 |
| Danks Family Fudge Ltd | Manufacturing | 2025 |
| Dantis Hospitality Limited | Hospitality | 2019 |
| Dariusz Pioro Digital Engineering Ltd | Information & communication | 2020 |
| Darkstream Properties Limited | Real estate | 2014 |
| Darkstream Property Holdings Ltd | Financial services | 2014 |
| Davis Dental Ltd | Health & social care | 2024 |
| Daylesford Organic Farms Limited | Agriculture & fishing | 2016 |
| DD Moto Spares Ltd | Wholesale & retail | 2022 |