| Disgraceful Productions Limited | Arts & recreation | 2025 |
| Distinct Operations Ltd | Professional & scientific | 2019 |
| Distinctive Paving & Groundworks Ltd | Construction | 2016 |
| Distinktive Tattoos Ltd | Other services | 2023 |
| Ditara Ltd | Administrative & support | 2022 |
| Divarmora Limited | Construction | 2019 |
| Diverse Care (UK) Ltd | Health & social care | 2002 |
| Diversity Business Magazine Limited | Other services | 2014 |
| Divine Marop Limited | Real estate | 2020 |
| Dixon Property Investments Ltd | Real estate | 2024 |
| DJ Acton Limited | Information & communication | 2023 |
| DJ Builders Ltd | Construction | 2015 |
| DJ Commercial Property Limited | Real estate | 2022 |
| DJ Decks Music Production Consultancy Limited | Professional & scientific | 2006 |
| DJ JTK Limited | Administrative & support | 2019 |
| DJL Landscape and Driveways Ltd | Administrative & support | 2023 |
| DJR Linemarking Limited | Construction | 2014 |
| DK Business Holdings Ltd | Wholesale & retail | 2020 |
| DKC Construction Limited | Professional & scientific | 2020 |
| DKM Planning Consultants Limited | Professional & scientific | 2016 |
| DLB Estates Limited | Real estate | 2026 |
| DLL Property Developments Limited | Real estate | 2021 |
| Dlordes Cleaningservices Ltd | Information & communication | 2026 |
| DM Car Garage and MOT Centre Ltd | Wholesale & retail | 2024 |
| DM Express Transport Ltd | Transport & logistics | 2012 |
| DMB Scientific Consultancy Limited | Professional & scientific | 2006 |
| DMC Projects (South East) Limited | Construction | 2018 |
| DMH Logistics Ltd | Transport & logistics | 2025 |
| DMK Bespoke Services Limited | Construction | 2020 |
| DML Technical Services Ltd | Professional & scientific | 2015 |
| DMO Properties Ltd | Real estate | 2020 |
| DMP Trading Limited | Wholesale & retail | 2010 |
| DMR Civil Engineering Limited | Construction | 2018 |
| DMS Communication Systems Ltd | Other services | 2002 |
| DN Environmental Ltd | Construction | 2025 |
| DNA Electrical Limited | Construction | 2015 |
| Dnse Ltd | Construction | 2025 |
| DNW Construction Ltd | Construction | 2010 |
| Dobi Productions Ltd | Professional & scientific | 2023 |
| Dockside Valeting Center Ltd | Administrative & support | 2019 |
| Dockyard Plumbing and Heating Ltd | Construction | 2025 |
| Dog Star Properties Ltd | Real estate | 2024 |
| DOJ Services Limited | Transport & logistics | 2013 |
| Doke Ltd | Construction | 2023 |
| Dolce B Limited | Wholesale & retail | 2013 |
| Dolce Consulting Limited | Professional & scientific | 2019 |
| Dolife Limited | Education | 2011 |
| Doll's Cleaning Services Limited | Administrative & support | 2019 |
| Domain Summit Ltd | Administrative & support | 2022 |
| Dominex Associates Limited | Administrative & support | 2000 |
| Dominion Marquees and Events Ltd | Hospitality | 2022 |
| Dominocodes Ltd | Information & communication | 2022 |
| Domint International Christian Centre for Pneumapreneurship | Other services | 2016 |
| Done and Trusted Ltd | Administrative & support | 2025 |
| Dont BE SHY Digital Ltd | Professional & scientific | 2015 |
| Doranbrowne Ltd | Arts & recreation | 2021 |
| DORCAS1980 Limited | Health & social care | 2020 |
| Dotsun Healthcare Ltd | Health & social care | 2013 |
| Dotsytine Consulting Limited | Administrative & support | 2009 |
| Dotti Rose Ltd | Real estate | 2023 |
| Double D Transport Ltd | Transport & logistics | 2019 |
| Double O Fire and Security Ltd | Administrative & support | 2025 |
| Double Perfection Limited | Health & social care | 2019 |
| Dover Port Services Limited | Extraterritorial | 2011 |
| Dovetail Estates Ltd | Real estate | 2026 |
| Downcourt Limited | Agriculture & fishing | 2018 |
| Downsview Properties Kent LLP | | 2024 |
| Dowo Services Limited | Manufacturing | 2024 |
| DPG Solutions Limited | Professional & scientific | 2026 |
| DPM Systems Limited | Information & communication | 2010 |
| DR H. Joubert Limited | Health & social care | 2015 |
| DR Stuart Anderson Limited | Health & social care | 2010 |
| DR UDE Paediatric Practice Ltd | Health & social care | 2021 |
| Dr.Aesthetic Ltd | Construction | 2022 |
| Dragan Trade Ltd | Other services | 2018 |
| Dragon Coworking Limited | Administrative & support | 2017 |
| Drahcir Electrical Ltd. | Construction | 2017 |
| Draim Ltd | Health & social care | 2019 |
| Drakes Property (Kent) Ltd | Real estate | 2019 |
| Drakes Property Services Limited | Real estate | 2022 |
| Dram Holdings Limited | Financial services | 2024 |
| Dramcraft Limited | Professional & scientific | 2024 |
| DRE Does Food Ltd | Manufacturing | 2026 |
| Dream Go Properties Ltd | Real estate | 2022 |
| Dream Stay Hideaway Ltd | Hospitality | 2024 |
| Dreamassist Ltd | Education | 2002 |
| Dreamfinch Limited | Hospitality | 1986 |
| Dreamlight Studios Ltd | Hospitality | 2019 |
| Dreamline Property Ltd | Real estate | 2024 |
| Dretz Ltd | Professional & scientific | 2023 |
| Drewclark Limited | Professional & scientific | 2005 |
| Driftmotive Ltd | Information & communication | 2022 |
| Drillmonkey Ltd | Wholesale & retail | 2023 |
| Driven Properties Ltd | Real estate | 2020 |
| Driver Intelligence Ltd | Education | 2003 |
| Driversource Ltd | Administrative & support | 2023 |
| Driveway LDN Ltd | Construction | 2026 |
| Drivy Tyres Ltd | Wholesale & retail | 2023 |
| Drop Cheap Ltd | Extraterritorial | 2019 |
| Druim Ltd | Real estate | 2025 |