| CRS Concrete Ltd | Construction | 2025 |
| CRT Construction Ltd | Construction | 2023 |
| Crumb on Ltd | Wholesale & retail | 2026 |
| Crush Events Ltd | Administrative & support | 2023 |
| Cryptical Solutions Ltd | Information & communication | 2023 |
| Crystal Accountancy Services Ltd. | Professional & scientific | 2023 |
| Crystal Edge Glazing Limited | Manufacturing | 2025 |
| Crystal Financial Claims Limited | Financial services | 2015 |
| Crystal Screen Limited | Manufacturing | 2020 |
| Crystal Tax Refund Ltd | Professional & scientific | 2020 |
| Crystal Windscreens Limited | Wholesale & retail | 2004 |
| Crystal Writers Ltd | Information & communication | 2025 |
| Crystals by Astraea Ltd | Wholesale & retail | 2025 |
| CS Capital Group Limited | Real estate | 2024 |
| CS Carpentry & Building Services Ltd | Construction | 2009 |
| CS Hydraulic Engineering Limited | Manufacturing | 2016 |
| CS Properties Ltd | Real estate | 2026 |
| CS Transport and Plant Ltd | Transport & logistics | 2019 |
| Csbm Logistics Ltd | Wholesale & retail | 2023 |
| CSG Contracting Ltd | Transport & logistics | 2015 |
| CSL Cleaning Ltd | Administrative & support | 2022 |
| CSL Mediation Limited | Other services | 2012 |
| Cslmr Ltd | Transport & logistics | 2014 |
| CSM Futures Limited | Other services | 2018 |
| CSN Logistics Ltd | Transport & logistics | 2021 |
| CSP Wolverhampton Limited | Real estate | 2016 |
| CT Driver Limited | Transport & logistics | 2016 |
| CT Pumps Limited | Manufacturing | 2020 |
| CT Reliable Care Limited | Health & social care | 2021 |
| CT1998 Ltd | Other services | 2025 |
| CTH Group Ltd | Education | 2026 |
| CTM Fire & Security (Preston) Limited | Other services | 2000 |
| CTM Fire & Security Limited | Professional & scientific | 1998 |
| CTT (West Midlands) Limited | Transport & logistics | 2002 |
| CTT (Wolverhampton) Limited | Transport & logistics | 1998 |
| CTT Asset Holdings Ltd | Financial services | 2025 |
| CUB Cosmetic Ltd | Wholesale & retail | 2025 |
| CUB Transport Ltd | Transport & logistics | 2025 |
| Cubberley Estates Limited | Real estate | 2008 |
| Cube Glazing Ltd | Construction | 2018 |
| Cubic Concrete Ltd | Transport & logistics | 2009 |
| Cubic Concrete Mixer Hire Limited | Transport & logistics | 2026 |
| Cuddles Collection (Midlands) Ltd | Administrative & support | 2023 |
| Cuddly Companion Company Limited | Wholesale & retail | 2024 |
| Cuisine by Repose Ltd | Hospitality | 2022 |
| Culinary Creations Ltd | Wholesale & retail | 2024 |
| Culture Change Ltd | Professional & scientific | 2011 |
| Culwell Estate Management Limited | Real estate | 1996 |
| CUP of Joy Ltd | Hospitality | 2022 |
| Cura Wellness and Aesthetics Ltd | Health & social care | 2026 |
| Curiosity Productions Ltd | Other services | 2017 |
| Curly Nation Limited | Health & social care | 2016 |
| Curran Glass Ltd | Manufacturing | 2025 |
| Curricular Ltd | Information & communication | 2026 |
| Curriculum Press Ltd | Manufacturing | 1994 |
| Curry Club Featherstone Ltd | Hospitality | 2025 |
| Curry HUT & Apna Pizza Ltd | Hospitality | 2025 |
| Curry Lounge (WV) Ltd | Hospitality | 2024 |
| Curry Lounge Dining Ltd | Hospitality | 2026 |
| Curtis Softs Ltd | Information & communication | 2024 |
| Curverester Ltd | Wholesale & retail | 2018 |
| Curzon Consultants Ltd | Administrative & support | 2019 |
| Custom and Restoration Specialists LLP | | 2025 |
| Custom Box Craft Ltd | Wholesale & retail | 2025 |
| Custom Creations Art Ltd | Wholesale & retail | 2024 |
| Custom Threadworks Ltd | Manufacturing | 2025 |
| Custom Trading Limited | Wholesale & retail | 2026 |
| Customs Clearance Services Limited | Extraterritorial | 2022 |
| Cute Hair Salon and Coffee Lounge Ltd | Hospitality | 2015 |
| Cutlershomes Ltd | Construction | 2020 |
| Cutmygardentech Ltd | Information & communication | 2025 |
| Cutting Edge (Wolverhampton) Limited | Other services | 2016 |
| Cuzmin Express Ltd | Transport & logistics | 2022 |
| CVC Logistics Ltd | Transport & logistics | 2026 |
| Cybase Link Limited | Wholesale & retail | 2021 |
| Cyber Heroez CIC | Information & communication | 2025 |
| Cybersafe LAB Ltd | Information & communication | 2021 |
| Cybertek Global Ltd | Information & communication | 2026 |
| Cybil Solution Limited | Wholesale & retail | 2026 |
| Cyclone Game Company Limited | Other services | 2018 |
| Cyfamod Technologies Limited | Information & communication | 2025 |
| Cylara Ltd | Transport & logistics | 2019 |
| Cyprus Care Ltd | Health & social care | 2023 |
| Cyruvo Ltd | Wholesale & retail | 2024 |
| Cytacs UK Ltd | Education | 2025 |
| D & a Sangha Ltd | Administrative & support | 2024 |
| D & B Sloperij and Valet Centre Ltd | Other services | 2020 |
| D & D Property Solutions Ltd | Real estate | 2024 |
| D & I Engineering (Midlands) Limited | Construction | 2021 |
| D & J Power Tool Repairs Ltd | Other services | 2016 |
| D & M Building & Construction Limited | Construction | 2014 |
| D & M Electro Plating Limited | Manufacturing | 1999 |
| D & M Flooring (Midlands) Limited | Construction | 2014 |
| D & M Plating Limited | Professional & scientific | 1999 |
| D & P Waste Paper & Plastic Recycling Limited | Water & waste | 1995 |
| D a English Roses Limited | Extraterritorial | 2017 |
| D a Woodfield Electronic Designs Limited | Professional & scientific | 2002 |
| D and R Electropro Ltd | Construction | 2025 |
| D B Fitters Limited | Construction | 2022 |
| D Bull Global Limited | Real estate | 2025 |