| Dickens Court Residents RTM Company Limited | Households | 2009 |
| Digileapservices Ltd | Professional & scientific | 2023 |
| Digital Bench Media Limited | Information & communication | 2021 |
| Digital Chorus Limited | Information & communication | 2018 |
| Digital Cinema Worldwide Ltd | Information & communication | 2014 |
| Dill-Russell Ltd | Health & social care | 2019 |
| Dime Square Limited | Health & social care | 2012 |
| Dinan Coaching Limited | Professional & scientific | 2018 |
| Dine Asado Limited | Hospitality | 2020 |
| DIO Electrics Ltd | Construction | 2022 |
| Dionesa Ltd | Real estate | 2018 |
| Dipped Desserts UK Ltd | Hospitality | 2025 |
| Dippy Design Ltd | Manufacturing | 2012 |
| Direct Express Ltd | Transport & logistics | 2016 |
| Direct Waste Removal Limited | Water & waste | 2025 |
| Discover EM Limited | Education | 2019 |
| Discover Learning Limited | Education | 2019 |
| Dispensata Limited | Professional & scientific | 2018 |
| Disty Ltd | Wholesale & retail | 2017 |
| Ditto Creative Ltd | Manufacturing | 1999 |
| Divine Anaesthetics Ltd | Health & social care | 2019 |
| Divine Residential Property Investments Limited | Real estate | 2021 |
| Divine Roofing & Building Ltd | Construction | 2001 |
| Divine-Heritage Limited | Health & social care | 2022 |
| DJ Lacon Plumbing & Heating Limited | Construction | 2014 |
| DJ Wagland General Building Limited | Construction | 2021 |
| DJA Property Holdings Limited | Real estate | 2022 |
| DJC Property Lets Ltd | Real estate | 2019 |
| DJM Music Limited | Wholesale & retail | 2002 |
| DJM Ponds Ltd | Agriculture & fishing | 2001 |
| Djsm Property Management Limited | Real estate | 2025 |
| DKB Consulting Limited | Professional & scientific | 2014 |
| DKI Property Ltd | Extraterritorial | 2024 |
| DLC Haulage (Kent) Limited | Transport & logistics | 2014 |
| Dmat Holdings Limited | Wholesale & retail | 2021 |
| DMD Restaurants Limited | Hospitality | 2014 |
| Dmfma Limited | Education | 2008 |
| Dmjl Consulting Limited | Professional & scientific | 2019 |
| DMS Services Group Ltd | Water & waste | 2025 |
| DND Core Ltd | Professional & scientific | 2000 |
| DO IT Right Limited | Construction | 2007 |
| Dockerty Solutions Ltd | Professional & scientific | 2025 |
| Doctor Charlotte Chen Ltd | Health & social care | 2024 |
| Dog Smart Training and Behaviour Limited | Other services | 2018 |
| Domain MAN Limited | Information & communication | 2003 |
| Domical Hospitality Ltd | Hospitality | 2025 |
| Donovan Landscapes Limited | Administrative & support | 2022 |
| Door Haus Ltd | Construction | 2024 |
| Door IQ Ltd | Manufacturing | 2025 |
| DOOR2TOUR.COM Limited | Administrative & support | 2020 |
| Dorchester ENT Limited | Health & social care | 2023 |
| DOT DOT DOT Creative Ltd | Professional & scientific | 2020 |
| Double M Consulting Limited | Administrative & support | 2013 |
| Doug's Dog House T/A the PUP CUP Limited | Wholesale & retail | 2022 |
| Douglas Seymour Enterprises Ltd | Wholesale & retail | 2022 |
| DOV Carpentry Ltd | Construction | 2026 |
| DP Medical Consultancy Limited | Health & social care | 2021 |
| DPI Print & Production Limited | Manufacturing | 2008 |
| Dpiv Services Ltd | Construction | 2005 |
| DPP Clinic Limited | Manufacturing | 2025 |
| DR Ariel Haus Limited | Wholesale & retail | 2014 |
| DR Attila Kardos MD PHD Frcp Fesc Limited | Health & social care | 2010 |
| DR BEN Turner Ltd | Health & social care | 2022 |
| DR Carys Thomas Oncology Limited | Health & social care | 2023 |
| DR Emma Surgery Ltd | Health & social care | 2025 |
| DR Goldsmith Ltd | Other services | 2017 |
| DR Haus Dermatology Clinics Ltd | Health & social care | 2011 |
| DR Justin Gould Ltd | Health & social care | 2025 |
| DR Kirit Ardeshna Ltd | Health & social care | 2024 |
| DR Moreno Headache and Dizziness Ltd | Education | 2025 |
| DR OZ Clinic Ltd | Other services | 2022 |
| DR Rachael's Dermatology Services Ltd | Health & social care | 2022 |
| DR S I J Whitcroft Practice Ltd | Health & social care | 2013 |
| DR T W KOH Ltd | Health & social care | 2019 |
| DR Tobias Arkenau Ltd | Health & social care | 2010 |
| Dragon Corporate Design Limited | Information & communication | 2008 |
| Drakcap Limited | Real estate | 2019 |
| Dralbion Ltd | Wholesale & retail | 2021 |
| Dransfield Solutions Limited | Professional & scientific | 1996 |
| Draw Events Limited | Administrative & support | 2011 |
| Drdkumar Limited | Health & social care | 2024 |
| Dreams Consult International Limited | Information & communication | 2022 |
| Drewco Solutions Ltd | Financial services | 2018 |
| Drilon HCW Ltd | Administrative & support | 2016 |
| Drive Protect Limited | Other services | 2009 |
| Driven Performance Ltd | Wholesale & retail | 2024 |
| Drivescapes Tonbridge Limited | Construction | 2019 |
| Drnma Medical Consulting Ltd | Health & social care | 2024 |
| Drumalis Endoscopy Limited | Health & social care | 2015 |
| DRY Hill Park Ltd | Professional & scientific | 2021 |
| Drytec International Limited | Manufacturing | 2019 |
| Drytec R&D Limited | Professional & scientific | 2021 |
| Drytec Spray Drying Limited | Manufacturing | 2014 |
| DS Luxe Consult Ltd | Wholesale & retail | 2025 |
| DSP Radiology Limited | Health & social care | 2025 |
| DTG Groundworks Limited | Construction | 2019 |
| Dual Pixel Consulting Ltd | Health & social care | 2019 |
| Duanto Technologies Ltd | Information & communication | 2016 |
| Dubble O Limited | Administrative & support | 2017 |
| Ductline (North) Creditors Partnership | | 1999 |