| Deals N Discounts UK Ltd | Wholesale & retail | 2024 |
| Dean Kelland Artist Ltd | Arts & recreation | 2019 |
| Deanery Church of England Primary School | Education | 2011 |
| Debbie Barbies Luxury Limited | Other services | 2024 |
| Decorum Digital Limited | Information & communication | 2020 |
| Decrown Limited | Extraterritorial | 2007 |
| DEE & Rita's Food Favourites Ltd | Hospitality | 2022 |
| DEE Mistry Creative Limited | Professional & scientific | 2020 |
| Deejay Ventures Limited | Health & social care | 2009 |
| Deen Optics Ltd | Health & social care | 2022 |
| Deepa Limited | Health & social care | 2010 |
| Deer Woods Consultancy Limited | Administrative & support | 2023 |
| Defendum Law Office Ltd | Professional & scientific | 2021 |
| Define Future Ltd | Professional & scientific | 2019 |
| Degan Developments Ltd | Real estate | 2018 |
| DEH Consultancy Limited | Professional & scientific | 2018 |
| Deka Developments (UK) Limited | Wholesale & retail | 2006 |
| Delacroix Legal Limited | Professional & scientific | 2019 |
| Delights of Greece (SC) Ltd | Hospitality | 2025 |
| Delish Assets Ltd | Real estate | 2025 |
| Delivering Business Change Limited | Information & communication | 2011 |
| Della Consultants Ltd | Real estate | 2018 |
| Delroc Ltd | Manufacturing | 2022 |
| Delta Access Solutions Limited | Construction | 2018 |
| Delta Process Systems Ltd | Manufacturing | 1992 |
| Deluxe Deep Cleaning Ltd | Administrative & support | 2020 |
| Deluxesthetics Ltd | Health & social care | 2023 |
| Delwin Ltd | Hospitality | 2024 |
| Dempo Holdings Limited | Wholesale & retail | 2025 |
| Denford Homes Ltd | Households | 2026 |
| Dentricity Ltd. | Health & social care | 2024 |
| Dentro Talent Ltd | Administrative & support | 2024 |
| Denvox Ltd | Construction | 2025 |
| Denzel & KAE Properties Ltd | Real estate | 2024 |
| Deoji Limited | Wholesale & retail | 2024 |
| Dera Holdings Limited | Real estate | 2024 |
| Derby Property Group Limited | Real estate | 2016 |
| Derek Bell Limited | Information & communication | 2013 |
| Derham Productions Ltd | Information & communication | 2020 |
| Derriman & Haynes Funeral Services Limited | Extraterritorial | 2003 |
| Desa Electrical Ltd | Construction | 2016 |
| Desa Properties Group Ltd | Real estate | 2025 |
| Design Craft Exhibitions Holdings Ltd | Financial services | 2018 |
| Design Craft Exhibitions Limited | Administrative & support | 1994 |
| Design Syntax Associates Ltd | Professional & scientific | 2026 |
| Designer Fireplaces Limited | Wholesale & retail | 2011 |
| Designloom Ltd | Professional & scientific | 2025 |
| Desire Hair Products Limited | Other services | 2025 |
| Desired Homes Limited | Real estate | 2016 |
| Destination Snob Ltd | Administrative & support | 2021 |
| Detail Landscapes Ltd | Construction | 2022 |
| Developing Prospects Limited | Construction | 2018 |
| Developments and Design Limited | Professional & scientific | 2008 |
| Devenio Limited | Information & communication | 2005 |
| Devereux Logistics Limited | Transport & logistics | 2024 |
| Devlin Brothers Limited | Administrative & support | 2010 |
| Devlin Sports Ltd | Arts & recreation | 2024 |
| Devoirs Properties Limited | Construction | 1977 |
| Devonshire Court Management (Four Oaks) Limited | Households | 1992 |
| Devyne Limited | Wholesale & retail | 2018 |
| Dewan Property Holdings Ltd | Financial services | 2025 |
| Dewi Reynolds & Sons Ltd | Extraterritorial | 2012 |
| DFB Foods Ltd | Hospitality | 2026 |
| DGN Packaging Ltd | Administrative & support | 2023 |
| DH Neuropsychology Ltd | Health & social care | 2018 |
| Dhamret Therapies Ltd | Other services | 2024 |
| Dhanda Ltd | Construction | 2023 |
| Dhdl Automotive Ltd | Wholesale & retail | 2017 |
| Dhillon Architectural Designs Limited | Professional & scientific | 2019 |
| Dhruv Phillips Limited | Professional & scientific | 2014 |
| Dhylophire Ltd | Administrative & support | 2021 |
| Diadamo Publishing Ltd | Information & communication | 2022 |
| Diagro Sensor Tech Ltd | Wholesale & retail | 2026 |
| Diamond Brothers Investments Limited | Real estate | 2023 |
| Diamond Sports HQ Ltd | Wholesale & retail | 2018 |
| Diamond Tiles West Midlands Ltd | Construction | 2025 |
| Digain Ltd | Real estate | 2025 |
| Digigouk Ltd | Information & communication | 2020 |
| Digital Campus Ltd | Information & communication | 2019 |
| Digital Contrast Limited | Administrative & support | 2021 |
| Digital Hub Limited | Information & communication | 2012 |
| Digital Idea Labs Limited | Information & communication | 2026 |
| Digital Medical Solutions Ltd | Health & social care | 2018 |
| Digital Momentum Marketing Limited | Professional & scientific | 2023 |
| Digital Native (UK) Limited | Information & communication | 2013 |
| Digital Native People Limited | Information & communication | 2023 |
| Digital Panda Tech Limited | Information & communication | 2024 |
| Digital Panda Websites Limited | Information & communication | 2021 |
| Dignity Finance Holdings Limited | Financial services | 2002 |
| Dignity (2002) Limited | Professional & scientific | 2002 |
| Dignity (2004) Limited | Professional & scientific | 2003 |
| Dignity (2008) Limited | Professional & scientific | 2008 |
| Dignity (2009) Limited | Extraterritorial | 2003 |
| Dignity (2014) Limited | Extraterritorial | 2014 |
| Dignity Beyond Life Limited | Information & communication | 2022 |
| Dignity Caring Funeral Services Limited | Extraterritorial | 1988 |
| Dignity Crematoria Limited | Construction | 2004 |
| Dignity Crematoria NO.2 Limited | Real estate | 2013 |
| Dignity Finance PLC | Financial services | 2002 |
| Dignity Funerals Limited | Other services | 1894 |