| Cosy Companions Ltd | Administrative & support | 2019 |
| Coverclad Properties Limited | Real estate | 2016 |
| Coverclad Roofing Ltd | Construction | 2019 |
| Coverclad Services Limited | Construction | 2004 |
| COX & COX (Holdings) Ltd | Financial services | 2021 |
| COX Accommodations Ltd. | Real estate | 2021 |
| CP Workwear Ltd | Manufacturing | 2021 |
| Crane Care Limited | Manufacturing | 1997 |
| Crawford Chiropractic Limited | Health & social care | 2003 |
| Craylon Ltd | Construction | 2014 |
| CRB Retail Limited | Administrative & support | 2022 |
| Crean Design Limited | Professional & scientific | 2014 |
| Creating Unique Toys Limited | Manufacturing | 2014 |
| Creative Print Solutions (West Midlands) Ltd | Information & communication | 2013 |
| Creative Release Limited | Manufacturing | 2015 |
| Creature Feature Experience Ltd | Arts & recreation | 2023 |
| CRM Property Investments Ltd | Construction | 2024 |
| Crow Energy Ltd | Administrative & support | 2022 |
| Crown & Canter Ltd | Agriculture & fishing | 2025 |
| Crumpton Holdings Limited | Financial services | 2025 |
| Crystal (UK) Limited | Hospitality | 2007 |
| CSJ Haulage Ltd | Transport & logistics | 2023 |
| CT Electrical Installations Ltd | Construction | 2023 |
| CTS Consultancy Services Ltd | Professional & scientific | 2024 |
| Cubicles and Shutters Ltd | Construction | 2022 |
| Cuddly Critters Limited | Wholesale & retail | 2012 |
| Curious Minds Nurseries Limited | Financial services | 2016 |
| Curious Psychology Ltd | Professional & scientific | 2019 |
| Custom Driveways and Landscaping Ltd | Administrative & support | 2023 |
| Custom Homes (Midlands) Limited | Construction | 2018 |
| Custom Property Installations Ltd | Construction | 2024 |
| CVW SPV Limited | Financial services | 2022 |
| CW Frames Ltd | Manufacturing | 2026 |
| Cyndicate Labs Limited | Information & communication | 2020 |
| CYP Services Transformation Limited | Professional & scientific | 2024 |
| D & C Utilities Limited | Construction | 2023 |
| D & D Products & Services Ltd | Manufacturing | 2025 |
| D & S Kitchens Limited | Construction | 2005 |
| D a Profiles Limited | Manufacturing | 2012 |
| D a Round Limited | Professional & scientific | 2015 |
| D B Foot Limited | Extraterritorial | 2011 |
| D G Poultry Services Limited | Other services | 2011 |
| D J Hill Bricklaying Limited | Construction | 2019 |
| D J Shakespeare Holdings Limited | Financial services | 2017 |
| D M C a Limited | Professional & scientific | 2004 |
| D Owen Services Ltd | Administrative & support | 2020 |
| D Waldron Properties Limited | Real estate | 2024 |
| D&C Roofing & Cladding Ltd | Construction | 2023 |
| D&C Utility Groundworks Ltd | Construction | 2023 |
| D&H Driveways & Landscaping Ltd | Construction | 2022 |
| D. J. Lift Services Limited | Manufacturing | 1976 |
| D.G. 2 Marketing Solutions Limited | Professional & scientific | 2012 |
| D.H. CAD Design Service Ltd. | Manufacturing | 2010 |
| D.J. Shakespeare Limited | Wholesale & retail | 1984 |
| D.N.A. Engineering Solutions Limited | Manufacturing | 2017 |
| DA Finest Coffee Limited | Wholesale & retail | 2023 |
| DAE Energy Solutions Ltd | Construction | 2020 |
| DAE Group Holdings Ltd | Real estate | 2022 |
| DAE Installations Ltd | Construction | 2021 |
| DAF Plumbing and Heating Ltd | Construction | 2022 |
| Dais Touch Limited | Health & social care | 2021 |
| Daisy Chain Kingswinford Limited | Wholesale & retail | 2019 |
| Dalton Accounting Software Ltd | Extraterritorial | 2014 |
| Dalton Pardoe Limited | Professional & scientific | 2012 |
| Dalton Tuition Services Limited | Education | 2015 |
| Dandy Shred Nerds Limited | Professional & scientific | 2024 |
| Dara Cotton Associates Limited | Health & social care | 2018 |
| Darewood Management Services Ltd | Professional & scientific | 1995 |
| Darwin Associates Limited | Health & social care | 2023 |
| Darwin Properties Group Ltd | Real estate | 2023 |
| Darwin Prospects LLP | | 2023 |
| Dave Deacon Advertising & Design Ltd | Professional & scientific | 2010 |
| Davids Fine Foods Limited | Wholesale & retail | 2010 |
| Davies Utilities Ltd | Construction | 2019 |
| Daviesenterprizes Limited | Construction | 2025 |
| Davlar Ltd | Professional & scientific | 2026 |
| Dawley Court (Kingswinford) Limited | Real estate | 1996 |
| Dawley Metals Ltd | Manufacturing | 2001 |
| Dawley Properties Ltd | Real estate | 2012 |
| Dazzel Properties Limited | Financial services | 2026 |
| Dazzling Dogs Grooming Salon K.Ford Ltd | Other services | 2021 |
| DBA Properties Limited | Real estate | 2013 |
| DBS Tech Ltd | Other services | 2023 |
| Dcms Holdings Limited | Financial services | 2018 |
| Deak Apparel Ltd | Wholesale & retail | 2024 |
| Decaf Limited | Wholesale & retail | 2017 |
| Declaro Limited | Information & communication | 2011 |
| Deerhurst Classics Limited | Wholesale & retail | 2013 |
| Deggz Commercial Services Limited | Professional & scientific | 2006 |
| DEL RAE Rose Limited | Real estate | 2025 |
| Delphorge 83 Limited | Agriculture & fishing | 1983 |
| Delta Juliett Bravo Ltd | Financial services | 2021 |
| Deltablaze Limited | Professional & scientific | 2014 |
| Deltron Lifts Coastal Limited | Extraterritorial | 2025 |
| Deltron Lifts Limited | Manufacturing | 2003 |
| Demidown Limited | Other services | 1990 |
| Dengines Limited | Wholesale & retail | 2024 |
| Dental World Engineering Limited | Health & social care | 2019 |
| Desi Sweets Limited | Wholesale & retail | 2019 |
| DF Retail Ltd | Wholesale & retail | 2022 |