| David Motoring Ltd | Transport & logistics | 2020 |
| Davis-Marks Associates Ltd | Professional & scientific | 2020 |
| Dawnedskull Limited | Wholesale & retail | 2024 |
| Day Day International Ltd | Wholesale & retail | 2026 |
| DB Model Kits Ltd | Manufacturing | 2022 |
| DBM Properties Maintenance Ltd | Construction | 2025 |
| DBP KP Limited | Professional & scientific | 2014 |
| DC Acumen Ltd | Real estate | 2017 |
| DC Film Producer Ltd | Information & communication | 2022 |
| DCL (Environmental Services) Limited | Wholesale & retail | 2000 |
| Ddl-Art Limited | Professional & scientific | 2013 |
| DDR Holdings Limited | Health & social care | 2019 |
| DE -Flow Portal Events & Catering Services Solution Limited | Hospitality | 2017 |
| DE Beauvoir Restoration Ltd | Construction | 2023 |
| DE Health & Safety Consultants Ltd | Other services | 2021 |
| DE Honoured Global Services Ltd | Health & social care | 2014 |
| DE Honoured Properties Management Services Ltd | Households | 2018 |
| DE L'Angle House Management Limited | Households | 1998 |
| DE L'Angle Mews Management Ltd | Extraterritorial | 1999 |
| DE Salons Ltd | Other services | 2026 |
| DE Silva Fernando Group Ltd | Real estate | 2008 |
| Dead in Venice Limited | Hospitality | 2020 |
| Deal & Dover Park Tennis CIC | Arts & recreation | 2023 |
| Debdale UK Limited | Professional & scientific | 2004 |
| Debden Court Limited | Agriculture & fishing | 2009 |
| Debonytwinz Services Ltd | Health & social care | 2019 |
| Deco -Art Limited | Professional & scientific | 1995 |
| Decorusexpo Limited | Professional & scientific | 2014 |
| Deep Matrix Lens Ltd | Information & communication | 2025 |
| Deeper Insights AI Ltd | Information & communication | 2014 |
| Deeper Insights Solutions Ltd | Information & communication | 2021 |
| Deepstack Media Limited | Administrative & support | 2010 |
| Defined Wine Land Holdings Ltd | Construction | 2026 |
| Defined Wine Ltd | Manufacturing | 2018 |
| DEG Travel Ltd | Administrative & support | 2016 |
| Degiovanni Dermatology Limited | Health & social care | 2023 |
| Deliang Renovation Ltd | Construction | 2024 |
| Deliverme Ltd | Transport & logistics | 2023 |
| Deluxe Alpha Limited | Professional & scientific | 2025 |
| Demarmels & Gallivan Properties Ltd | Real estate | 2021 |
| Demlyn Group Limited | Hospitality | 2007 |
| Demonx Ltd | Construction | 2025 |
| DEN Haag Properties Limited | Real estate | 2023 |
| Denne Hill Farms LP | | 2013 |
| Dennes Limited | Professional & scientific | 2006 |
| Denstead Stud Ltd | Agriculture & fishing | 2018 |
| Dergutek Ltd | Professional & scientific | 2024 |
| Derlwyn Forestry Limited | Agriculture & fishing | 2021 |
| Dermaluxe Skin and Body Ltd | Health & social care | 2023 |
| Derringstone Limited | Wholesale & retail | 2015 |
| Desi South East Limited | Wholesale & retail | 2025 |
| Destination Goto Ltd | Information & communication | 2019 |
| Detection for Security Ltd | Administrative & support | 2001 |
| Development & Maintenance Group Limited | Construction | 2018 |
| Development Planning Studio (South East) Ltd. | Professional & scientific | 2009 |
| Devils in the Detailing Ltd | Wholesale & retail | 2025 |
| Devonshire House (Kent) Management LLP | | 2023 |
| Devonshire House RTM Company Limited | Real estate | 2009 |
| Dfem Ltd. | Financial services | 2013 |
| DG Wetlands Ltd | Construction | 2023 |
| Dgtt Limited | Health & social care | 2025 |
| Dhakshina UK Ltd | Education | 2020 |
| DHM Global Business Limited | Wholesale & retail | 2025 |
| Dhopper Express Delivery Ltd | Transport & logistics | 2026 |
| DI & JOE Limited | Health & social care | 2018 |
| Dial a Style Limited | Other services | 2002 |
| Diamond Hygiene Limited | Water & waste | 2006 |
| Diamond Motoring World Limited | Wholesale & retail | 2017 |
| Digital Key Consulting Ltd | Hospitality | 2019 |
| Digital Marketing Mastery Ltd | Education | 2024 |
| Digital Potion Limited | Information & communication | 2008 |
| Digital Workplace Services Limited | Other services | 2003 |
| Digitall - Digital Inclusion for ALL CIC | Education | 2024 |
| Digitalstream Group Limited | Professional & scientific | 2025 |
| Diji and Co Property Limited | Real estate | 2021 |
| Direct Line Property Limited | Real estate | 1990 |
| Direct Pizza Canterbury Ltd | Hospitality | 2017 |
| Discovered by Ltd | Administrative & support | 2012 |
| Discovery Products Limited | Professional & scientific | 2015 |
| Distinct TD Structures Ltd | Manufacturing | 2020 |
| Distinctive Bars Limited | Hospitality | 2018 |
| Distinctive Ventures Limited | Extraterritorial | 2026 |
| Divarida Ltd | Manufacturing | 2025 |
| Divine Angels Healthcare Services Ltd | Other services | 2023 |
| Divine Beauty Limited | Other services | 2013 |
| Dixon Fibre&Utilities Limited | Construction | 2025 |
| Dixon Gardening Services Ltd | Professional & scientific | 2025 |
| DJ Marine Limited | Transport & logistics | 2015 |
| DJG Events Ltd | Professional & scientific | 2026 |
| DJP Engineering Services LLP | | 2007 |
| Djvo Solutions Ltd | Education | 2023 |
| DK (Canterbury) Ltd | Construction | 2014 |
| DLC Admin Ltd | Administrative & support | 2023 |
| DLN Consulting Ltd | Information & communication | 2020 |
| Dlots Cyber Security Consultancy Limited | Information & communication | 2022 |
| Dlportfolio Limited | Wholesale & retail | 2008 |
| DLR Media Marketing Limited | Professional & scientific | 2025 |
| DM Advisory Services Ltd | Professional & scientific | 2025 |
| DMK2 Consulting Limited | Professional & scientific | 2023 |
| DMP Capital U.K. Ltd | Professional & scientific | 2023 |