| Cutting for Success Ltd | Other services | 2023 |
| CV2 Properties Ltd | Extraterritorial | 2016 |
| CWA Investments Ltd | Financial services | 2020 |
| CWR Design Limited | Professional & scientific | 2017 |
| Cybassurity Ltd | Information & communication | 2025 |
| Cybernetic Core Limited | Wholesale & retail | 2026 |
| Cyclamen Risk Ltd | Professional & scientific | 2024 |
| Cyclopshop Ltd | Wholesale & retail | 2023 |
| Cygnet Security Ltd | Information & communication | 2018 |
| Cylinder Rebores Limited | Construction | 2014 |
| D & G International Transport Limited | Transport & logistics | 2018 |
| D & N Business Services Limited | Professional & scientific | 2011 |
| D & S Clearance Services Ltd | Construction | 2015 |
| D & T Scaffolding Limited | Construction | 2016 |
| D and M Roofing Ltd | Construction | 2021 |
| D Britain Home Improvements Limited | Construction | 2014 |
| D C Creations Ltd | Wholesale & retail | 2025 |
| D G Friswell Ltd | Hospitality | 2022 |
| D Horan Consultants Ltd | Construction | 2014 |
| D J Granger Limited | Administrative & support | 2018 |
| D J Shorthose Ltd | Administrative & support | 2015 |
| D L Landscape and Groundworks Ltd | Administrative & support | 2021 |
| D P C Maintenance (Midlands) Limited | Construction | 2014 |
| D&M Marketing Ltd | Professional & scientific | 2025 |
| D-Restricted Ltd | Health & social care | 2022 |
| D. and S. Freeman Limited | Professional & scientific | 1979 |
| D.A. Brockwell Limited | Wholesale & retail | 2017 |
| D.B. Devall Funeral Directors Limited | Other services | 1986 |
| D.C. Autos (Nuneaton) Limited | Wholesale & retail | 2017 |
| D.Rotar Ltd | Professional & scientific | 2017 |
| D60 Limited | Professional & scientific | 2026 |
| DA Barbers Ltd | Other services | 2025 |
| DAA Import and Export Ltd | Wholesale & retail | 2025 |
| Daarai Ltd | Information & communication | 2024 |
| Dabro&Dabro Ltd | Wholesale & retail | 2019 |
| DAC Properties Limited | Households | 1996 |
| DAE Four Cleaners Ltd | Administrative & support | 2023 |
| DAE Transport Limited | Transport & logistics | 2017 |
| Daedalus Aviation UK Limited | Extraterritorial | 2006 |
| Dafin Carpentry Limited | Construction | 2025 |
| Dafo AI Ltd | Information & communication | 2023 |
| Daily Delight Foods Ltd | Wholesale & retail | 2025 |
| Dailyscape Ltd | Wholesale & retail | 2026 |
| Dainfern Healthcare Ltd | Health & social care | 2025 |
| Dairy Bits Limited | Manufacturing | 2023 |
| Dalby Properties (MM) Limited | Construction | 2023 |
| Dalvick Ltd | Construction | 2020 |
| Dampblock Limited | Construction | 2023 |
| DAN Spedition Ltd | Transport & logistics | 2014 |
| Dance Express Limited | Arts & recreation | 2005 |
| Dandelion Hideaway Limited | Hospitality | 2022 |
| Daniele Haddon Limited | Wholesale & retail | 2018 |
| Daniels the Jewellers Limited | Wholesale & retail | 2008 |
| Danimat Limited | Other services | 2006 |
| Dapper Dobbins Ltd | Agriculture & fishing | 2011 |
| Darley Fire Protection Ltd | Public administration | 2022 |
| Dask Investments Limited | Real estate | 2025 |
| Data Productions Ltd | Information & communication | 2013 |
| Databox 360 Limited | Administrative & support | 2019 |
| DAU Golden Ltd | Transport & logistics | 2025 |
| Davco Trans Limited | Administrative & support | 2017 |
| Daventry Pharma Limited | Wholesale & retail | 2007 |
| David Coyle and Co Ltd | Professional & scientific | 2021 |
| David Stoneleigh Close Limited | Extraterritorial | 2013 |
| David W Porter Ltd | Education | 2023 |
| David&Adam Ltd | Manufacturing | 2025 |
| Davies Holdings (Nuneaton) Ltd | Real estate | 2008 |
| Davies Holdings Group Ltd | Financial services | 2026 |
| Davies Overland Transport Ltd | Transport & logistics | 2023 |
| Davis Landscaping Ltd | Administrative & support | 2015 |
| Day Flex Recruitment Ltd | Administrative & support | 2023 |
| Day Transport Ltd | Transport & logistics | 2025 |
| Dazzle Dancewear Limited | Other services | 2013 |
| DB Drinks Services Ltd | Extraterritorial | 2025 |
| DB Johnson Consulting Limited | Professional & scientific | 2023 |
| DB Pegasus Ltd | Manufacturing | 2016 |
| DC Building and Developments Ltd | Real estate | 2023 |
| DC Fire Safety Consultancy Limited | Professional & scientific | 2026 |
| DC Home Maintenance COV Ltd | Construction | 2026 |
| DC Housing Consultancy Ltd | Professional & scientific | 2023 |
| DCP Surveying Services Limited | Professional & scientific | 2006 |
| Dd's Convenient Store Ltd | Wholesale & retail | 2019 |
| DDD Bro’S Ltd | Transport & logistics | 2020 |
| Ddmagor Ltd | Health & social care | 2015 |
| DDW Trading Ltd | Wholesale & retail | 2023 |
| DE Boure Properties Ltd | Real estate | 2012 |
| De-Bagg Ltd | Information & communication | 2007 |
| Dead Skull Ltd | Arts & recreation | 2026 |
| Dead Weight Brewing Company Ltd | Manufacturing | 2020 |
| Deadlift Apparel Limited | Wholesale & retail | 2026 |
| Deaf & Hearing Trailblazers CIC | Professional & scientific | 2018 |
| Dealforanyoccasion Ltd | Wholesale & retail | 2024 |
| Dean Cameron-Cs Ltd | Wholesale & retail | 2026 |
| Deathdefiing Ltd | Information & communication | 2024 |
| Debono Accounting Services Ltd | Professional & scientific | 2018 |
| DEE Nest Ltd | Real estate | 2025 |
| Dee's Tasty Bites Limited | Hospitality | 2015 |
| Deel Boy's Ltd | Wholesale & retail | 2026 |
| DEL Boy’S Shop Ltd | Wholesale & retail | 2025 |
| Delicii DIN Lapte Limited | Manufacturing | 2024 |