| Cruise Holidays UK Ltd | Extraterritorial | 2011 |
| Cruise Holidays USA Ltd | Extraterritorial | 2011 |
| Crush Design and Creative Marketing Limited | Professional & scientific | 2008 |
| Crystal Valeting Ltd | Wholesale & retail | 2026 |
| Crystal Water Retail Ltd | Wholesale & retail | 2026 |
| Crytec Limited | Manufacturing | 2016 |
| CS Properties (Asset Management) Ltd | Real estate | 2015 |
| CS Sofas Ltd | Wholesale & retail | 2024 |
| CS2 Transport Limited | Transport & logistics | 2004 |
| CSG Fitness PT Academy Limited | Education | 2025 |
| CSM Furnishings Ltd | Wholesale & retail | 2019 |
| CT FAB Service Ltd | Professional & scientific | 2025 |
| Ctcg Associates Limited | Real estate | 2016 |
| Ctcm Limited | Health & social care | 2006 |
| Ctec Automotive Limited | Professional & scientific | 2016 |
| CTI Property Group Ltd | Real estate | 2021 |
| CU Jwcraft Limited | Hospitality | 2024 |
| Cubittz Development Limited | Information & communication | 2017 |
| Cuckoo Nest Holiday Retreat Limited | Hospitality | 2022 |
| Cullen Records Limited | Other services | 2025 |
| Cunningham Property Consulting Ltd | Hospitality | 2023 |
| Cupit-Newlove Ltd | Professional & scientific | 2025 |
| Curlygirly Ltd | Education | 2025 |
| Curry Leaf Enterprise Ltd | Hospitality | 2019 |
| Curry Station Ltd | Hospitality | 2025 |
| Currys Made Simple Ltd | Hospitality | 2021 |
| Curtain Studio Ltd | Manufacturing | 2016 |
| Cushion Pack (UK) Ltd. | Wholesale & retail | 2016 |
| Custom Paints Limited | Manufacturing | 2012 |
| Customise Kitchens & Bedrooms Limited | Wholesale & retail | 2024 |
| Customise Ltd | Manufacturing | 2023 |
| Customize Ltd | Administrative & support | 2023 |
| Cute Cake Time Ltd | Wholesale & retail | 2025 |
| Cutler PUB Limited | Hospitality | 2018 |
| Cutthorpe Apartments Ltd | Households | 2022 |
| Cutthorpe Creamery Ltd | Manufacturing | 2024 |
| Cutthorpe Management Services Ltd | Administrative & support | 2016 |
| Cutting Edge Carpet Ltd | Manufacturing | 2006 |
| Cutts Engineering Maintenance Ltd | Professional & scientific | 2025 |
| Cutts Tanker Logistics Limited | Transport & logistics | 2023 |
| CW Plant OPS Limited | Construction | 2016 |
| CW Support Services Ltd | Transport & logistics | 2020 |
| Cwdirect Ltd | Transport & logistics | 2025 |
| CWI Accountants Ltd | Professional & scientific | 2021 |
| CWM Gelli Care Limited | Health & social care | 2020 |
| Cxff Ltd | Arts & recreation | 2026 |
| Cyber Safeguard Ltd | Information & communication | 2021 |
| Cyberscape Ltd | Information & communication | 2023 |
| Cynetix Group Limited | Information & communication | 1997 |
| D & a Graham Limited | Real estate | 2018 |
| D & H Developments (UK) Limited | Real estate | 2007 |
| D and a Services Chesterfield Limited | Water & waste | 2007 |
| D C Brewin Limited | Professional & scientific | 2010 |
| D C Property Group Limited | Construction | 2015 |
| D C Strategic Growth Ltd | Professional & scientific | 2019 |
| D E & P Dolphin Ltd | Construction | 2011 |
| D Jarvis Joinery Limited | Construction | 2016 |
| D K Sales Limited | Wholesale & retail | 2007 |
| D L Buckley Limited | Education | 2003 |
| D L Properties (Chesterfield) Ltd | Real estate | 2023 |
| D M Peach Ltd | Professional & scientific | 2023 |
| D Matthews Window Cleaning Ltd | Administrative & support | 2024 |
| D Parry Engineering Services Limited | Professional & scientific | 2026 |
| D Pozo Roofing Ltd | Construction | 2024 |
| D R Guitars Limited | Manufacturing | 2025 |
| D S Environmental Limited | Construction | 1998 |
| D S Food Engineering Limited | Hospitality | 2018 |
| D Sankey Properties Ltd | Real estate | 2021 |
| D Smart Building Limited | Construction | 2019 |
| D V Developments (Chesterfield) Ltd | Construction | 2021 |
| D&B Logistics Ltd | Transport & logistics | 2022 |
| D&B Management and Services Limited | Health & social care | 2017 |
| D&C Elliott Holdings Limited | Extraterritorial | 2016 |
| D&C Notts Home Improvement Ltd | Construction | 2022 |
| D&C Real Estate Holdings Limited | Real estate | 2024 |
| D'Arcy & SON Limited | Professional & scientific | 2012 |
| D'S PUB Services Ltd | Hospitality | 2021 |
| D-Line Entertainment Ltd | Hospitality | 2023 |
| D-Line Security Services Ltd | Administrative & support | 2024 |
| D. C. Electrical (Wales) Limited | Construction | 2009 |
| D. E. PER Limited | Professional & scientific | 2005 |
| D.A.R.T Chesterfield Ltd | Education | 2013 |
| D.B. Joinery Developments Limited | Construction | 2009 |
| D.C. Vehicle Solutions Ltd. | Manufacturing | 2008 |
| D.D.A. Developments Ltd. | Wholesale & retail | 1992 |
| D.J Developments Derbyshire Ltd | Construction | 2019 |
| D.J. Atkinson Construction Limited | Construction | 1999 |
| D.L.S. Construction Company Limited | Construction | 1978 |
| D.M.C Tiling Contractors Ltd | Construction | 2018 |
| D.O.R. Electrical Limited | Manufacturing | 2011 |
| D.S. Electrical Ltd | Manufacturing | 2004 |
| D05 Preservation Limited | Transport & logistics | 2016 |
| D05 Taverns Limited | Hospitality | 2020 |
| D2O Tasties Limited | Hospitality | 2022 |
| DA Networking Ltd | Health & social care | 2015 |
| Dab-Hand Disposables Limited | Transport & logistics | 1998 |
| DAC (Midlands) Holdings Ltd | Financial services | 2020 |
| Dainty Properties Ltd | Real estate | 2024 |
| Dairy Testing Solutions Limited | Professional & scientific | 2013 |
| Dakin Property Developments Ltd | Construction | 2022 |