| Dave Ward Transport Ltd | Transport & logistics | 2018 |
| Davis Metalwork Ltd | Manufacturing | 2021 |
| Dawe Capital Ltd | Construction | 2012 |
| Daycare Holdings Ltd | Health & social care | 2025 |
| DAZ Tran Commercials Ltd | Wholesale & retail | 2026 |
| DAZ Tran Limited | Transport & logistics | 2002 |
| DB Infinity Limited | Manufacturing | 2015 |
| DC Property Developers (Kent) Limited | Construction | 2007 |
| DCJ Couriers Ltd | Transport & logistics | 2023 |
| DD Food Group Ltd | Hospitality | 2025 |
| Decan Consultants Ltd | Professional & scientific | 2024 |
| Deeelicious Limited | Wholesale & retail | 2026 |
| Deeney Consulting Ltd | Health & social care | 2015 |
| Deja Studios Limited | Information & communication | 2024 |
| Deltech Services Limited | Manufacturing | 1998 |
| Dematt Limited | Information & communication | 2010 |
| Demaya's Jungle Ltd | Wholesale & retail | 2021 |
| Demon Capital Limited | Extraterritorial | 2010 |
| Dengate Properties Ltd | Construction | 2025 |
| Dentagon Ltd | Health & social care | 2026 |
| Dermosv Ltd | Health & social care | 2014 |
| Derpydoodesigns Ltd | Arts & recreation | 2023 |
| Design and Print Centre Limited | Manufacturing | 2005 |
| Devris Ltd | Other services | 2020 |
| Dezyne Limited | Manufacturing | 2021 |
| DI Blasi Design Limited | Professional & scientific | 2012 |
| Diamond Production Ltd | Information & communication | 2025 |
| Dickies Management Limited | Real estate | 2026 |
| Dickinsons Accountants (Kent) Limited | Professional & scientific | 2008 |
| Dickinsons Management Consultancy Limited | Professional & scientific | 2021 |
| Dickson Court (Westbrook) Management Limited | Professional & scientific | 1978 |
| Digital Advertising Consultants Ltd | Information & communication | 2026 |
| Dignity for MEN Ltd | Health & social care | 2025 |
| Dilley Milley Limited | Hospitality | 2019 |
| Dilly Sports Ventures Limited | Financial services | 2025 |
| Directlox Ltd | Wholesale & retail | 2025 |
| Diretto Ltd | Hospitality | 2025 |
| Dirty DRY Cleaning Ltd | Administrative & support | 2021 |
| Dirty Fingers Limited | Wholesale & retail | 2006 |
| Disruptive Media & Events Ltd | Information & communication | 2017 |
| Distant Dreams Ltd | Administrative & support | 2025 |
| Divisi Ltd | Information & communication | 2026 |
| DJ Pashley Interiors Ltd | Construction | 2015 |
| DJK Railway Limited | Transport & logistics | 2015 |
| DK Track Limited | Construction | 2023 |
| DLG Projects (UK) Limited | Professional & scientific | 2013 |
| Dlid Building & Civils Limited | Construction | 2021 |
| DME Engineering Kent Ltd | Professional & scientific | 2025 |
| DMM London Facades Limited | Professional & scientific | 2023 |
| Dover Street Doctors LLP | | 2013 |
| Downs Real Estate Holdings Ltd | Real estate | 2025 |
| Downs Real Estate Ltd | Professional & scientific | 2023 |
| Downs View Drive Ltd | Real estate | 2020 |
| Downwood Limited | Construction | 1962 |
| DP Nutraceuticals Limited | Professional & scientific | 2013 |
| DPP Homes Holdings Limited | Financial services | 2025 |
| DPP Homes Limited | Extraterritorial | 2025 |
| DPP Investments Limited | Financial services | 2026 |
| DPP Property Limited | Real estate | 2016 |
| DPS Kent Ltd | Hospitality | 2025 |
| Dragon Homes (Herne Bay) Limited | Construction | 2017 |
| Dre's Caribbean Kitchen Limited | Hospitality | 2023 |
| Dream Louder Festival Ltd | Arts & recreation | 2025 |
| Dreams Estate Agency Ltd | Real estate | 2018 |
| DRH Construction Services Limited | Construction | 2019 |
| Drumhead Limited | Arts & recreation | 2013 |
| DS Builders Kent Ltd | Construction | 2023 |
| Dspp Medical Services Limited | Health & social care | 2013 |
| DT Contracts Ltd | Construction | 2018 |
| DT Forestry Limited | Agriculture & fishing | 2024 |
| Dtmws Group Ltd | Wholesale & retail | 2025 |
| Ducron Construction Limited | Construction | 1995 |
| Ducron Holdings Limited | Real estate | 2024 |
| Dunns Bakery Limited | Wholesale & retail | 2009 |
| Dunstan Court Management Limited | Households | 1995 |
| Durovernum Estates Ltd | Real estate | 2022 |
| Dynamic Production Solutions Ltd | Administrative & support | 2015 |
| E F Associates Limited | Extraterritorial | 1996 |
| E Flow Cycles Ltd | Extraterritorial | 2016 |
| E Mcgown Limited | Health & social care | 2008 |
| E Welch Lettings Ltd | Real estate | 2023 |
| E&R Tree Care Ltd | Administrative & support | 2024 |
| E.L.Head Limited | Manufacturing | 1954 |
| Eagency (Kent) Limited | Arts & recreation | 2025 |
| Ease in Motion Canine Rehab Ltd | Professional & scientific | 2026 |
| East Kent Care Ltd | Health & social care | 2024 |
| East Kent Commercial Cleaners Ltd | Administrative & support | 2018 |
| East Kent Ensemble Ltd | Arts & recreation | 2026 |
| East Kent MED Secs Ltd | Administrative & support | 2024 |
| East Kent Traffic Management Ltd | Construction | 2018 |
| East Kent Youth Football League Limited | Arts & recreation | 2020 |
| Eastbourne Group Limited | Financial services | 2026 |
| Eastcoat Estates Ltd | Households | 2014 |
| Eastfield CAP Limited | Professional & scientific | 2020 |
| Eastwood Machinery Services Ltd | Manufacturing | 2010 |
| Ecommerce Store Ltd | Wholesale & retail | 2025 |
| Eden Meadows Ltd | Real estate | 2022 |
| Eden Recruitment Ltd | Administrative & support | 2024 |
| Edgar Track Services Limited | Construction | 2018 |
| Edgem Properties Ltd | Real estate | 2019 |