| DAD Enterprises Limited | Manufacturing | 2019 |
| DAL Detwilleneau Limited | Real estate | 2017 |
| Dalmatino Ltd | Health & social care | 2021 |
| DAM Trans Logistic Ltd | Transport & logistics | 2023 |
| Damon Stewart-Hall Ltd | Transport & logistics | 2019 |
| DAN Dans Ltd | Education | 2016 |
| DAN Jacobsen VFX Ltd | Information & communication | 2020 |
| DAN Tagoe Ltd | Professional & scientific | 2016 |
| Dancare Recruitment Services Ltd | Administrative & support | 2025 |
| Dance Uniform Limited | Wholesale & retail | 2021 |
| Dangme Harvest Ltd | Wholesale & retail | 2025 |
| Darcys Catering Ltd | Hospitality | 2019 |
| Dashpot Limited | Construction | 2020 |
| Data Next Management Ltd | Information & communication | 2023 |
| Daves Tech Spares Limited | Wholesale & retail | 2022 |
| Davis Recruitment Ltd | Administrative & support | 2025 |
| Davis Travel Limited | Transport & logistics | 2021 |
| Davydov-Tse Limited | Hospitality | 2020 |
| Day & Night Clothing Ltd | Wholesale & retail | 2021 |
| Day Supermarket Ltd | Wholesale & retail | 2024 |
| Days Grills Ltd | Hospitality | 2019 |
| DB Carpentry (Kent) Ltd | Manufacturing | 2022 |
| DB6 Ltd | Construction | 2019 |
| DDB Electrical Ltd | Construction | 2021 |
| DDP Digital Limited | Information & communication | 2014 |
| Dead Isle Ltd | Arts & recreation | 2025 |
| Dear Susan Ltd | Extraterritorial | 2015 |
| Dearnley Plumbing & Heating Ltd | Construction | 2022 |
| Define Your Movement Ltd | Arts & recreation | 2026 |
| Delilah's Developments Ltd | Construction | 2026 |
| Della Rovere Ltd | Hospitality | 2024 |
| Denton Investments Limited | Arts & recreation | 1996 |
| Derllio Limited | Manufacturing | 2025 |
| Devi & AM Limited | Transport & logistics | 2013 |
| DG Kent Catering Services Limited | Hospitality | 2025 |
| DGA Kent Limited | Professional & scientific | 2015 |
| Dhanmanshiram Limited | Health & social care | 2023 |
| Dhow Limited | Wholesale & retail | 2022 |
| Diaz (Kingfisher) Ltd | Real estate | 2022 |
| Diaz-Zala Holdings Limited | Real estate | 2022 |
| Digital Soul Ltd | Information & communication | 2025 |
| Digital Underground Limited | Professional & scientific | 2017 |
| Digitall Media Limited | Professional & scientific | 2025 |
| Dilfinium Ltd. | Education | 2019 |
| Dilreno Limited | Wholesale & retail | 2026 |
| Dimension Property Group Ltd | Financial services | 2026 |
| Dimension Property Management Ltd | Real estate | 2026 |
| Dion's Tribe Ltd | Agriculture & fishing | 2025 |
| Dipfingerscatering 'DFC' Ltd | Manufacturing | 2022 |
| Direct Pizza Kent Ltd | Hospitality | 2023 |
| Direct Upvc Ltd | Manufacturing | 2025 |
| Diverse Projects Limited | Construction | 2022 |
| Dixeys Detailing Ltd | Other services | 2025 |
| DJ Interiors South East Ltd | Wholesale & retail | 2018 |
| DJC Associates Limited | Information & communication | 1998 |
| DJK Decorating and Design Ltd | Construction | 2022 |
| DJR Projects Ltd | Construction | 2020 |
| DJR Property Rental Ltd | Real estate | 2023 |
| DK Street (Margate) Management Limited | Households | 2025 |
| Dlmh Limited | Other services | 2023 |
| DM Building and Decorating Limited | Construction | 2024 |
| DMR Solutions and Services Ltd | Construction | 2018 |
| DNA Pest Control Ltd | Administrative & support | 2023 |
| DNF Studios Ltd | Information & communication | 2024 |
| DNR Digital Ltd | Information & communication | 2019 |
| Doggie Apparel Limited | Manufacturing | 2014 |
| Doghouse Margate Ltd | Hospitality | 2020 |
| Dogu Games Ltd | Manufacturing | 2021 |
| Doklu Holdings (Cuxton Road) Ltd | Real estate | 2023 |
| Doklu Holdings (Duncan Road) Limited | Real estate | 2018 |
| Doklu Holdings (Gorrie Street) Limited | Real estate | 2020 |
| Doklu Holdings Ltd | Real estate | 2016 |
| Dokludiaz (Harmer Street) Ltd | Real estate | 2025 |
| Dokludiaz (London Road) Ltd | Real estate | 2022 |
| Dokludiaz (Lynton Road South) Ltd | Real estate | 2019 |
| Domains in a Box Limited | Information & communication | 2021 |
| Dominic Murphy Estates Ltd | Real estate | 2021 |
| Dominic Watson Ltd | Arts & recreation | 2019 |
| Dominion Care and Agency Limited | Administrative & support | 2019 |
| Don'T Miss OUT CIC | Professional & scientific | 2024 |
| Doney Company Limited | Professional & scientific | 2023 |
| Don’T Blink! Photobooths Ltd | Professional & scientific | 2025 |
| Doomdisc Ltd | Information & communication | 2022 |
| Door Handles Ironmongery Ltd | Wholesale & retail | 2022 |
| Dot.Mov Limited | Information & communication | 2023 |
| Double D Holdings Ltd. | Real estate | 2016 |
| Doubloons Margate Ltd | Manufacturing | 2023 |
| Dour House Management Limited(The) | Households | 1985 |
| Dover Launderette Kent Ltd | Other services | 2024 |
| Downs Developments Limited | Construction | 2013 |
| DPG 101 Ltd | Real estate | 2021 |
| DPG 102 Ltd | Real estate | 2026 |
| DPG 103 Ltd | Real estate | 2026 |
| DPG 104 Ltd | Real estate | 2026 |
| DPG 105 Ltd | Real estate | 2026 |
| DR Alexander Munroe Ltd | Education | 2025 |
| DR R G Hill Psychological Consultants Limited | Health & social care | 2013 |
| DR Vagabond Limited | Health & social care | 2023 |
| Draconis Consultancy Group Ltd | Professional & scientific | 2025 |
| Drax Investments (Canterbury) Ltd | Households | 2018 |