| Denecote Lodge Management Limited | Households | 1985 |
| Denecourt (Boscombe) Limited | Real estate | 1997 |
| Denewood Hotel Management Limited | Hospitality | 2003 |
| Denham Court (Highcliffe) Limited | Households | 1961 |
| Denix Studio Limited | Information & communication | 2024 |
| Denniston Consulting Ltd | Financial services | 2001 |
| Dentim Ltd | Other services | 2026 |
| Deodara Limited | Financial services | 2014 |
| Derek Thomas Limited | Wholesale & retail | 1961 |
| Derma Fusion Limited | Other services | 2024 |
| Des.Dev. Ltd | Construction | 2015 |
| Deseerra Technologies Ltd | Information & communication | 2026 |
| Deshinobab Ltd | Hospitality | 2025 |
| Design 66 Ltd | Extraterritorial | 2022 |
| Design ALL Construction Limited | Construction | 2020 |
| Design and Art Ltd | Other services | 2022 |
| Design PIT Limited | Information & communication | 2012 |
| Design Print Internet Limited | Manufacturing | 2001 |
| Design Weddings Ltd | Wholesale & retail | 2020 |
| Designbychip Limited | Manufacturing | 2004 |
| Designedhealthcare Ltd | Health & social care | 2019 |
| Designer Outlet Tours & Travel Group Limited | Wholesale & retail | 2022 |
| Designer Shaik Limited | Manufacturing | 2000 |
| Designs Republic Ltd | Wholesale & retail | 2022 |
| Desire Supermarket Ltd | Wholesale & retail | 2017 |
| Destenation Autos Limited | Wholesale & retail | 2025 |
| Destined to WIN Fellowship International | Other services | 2014 |
| Destiny Events and Promotions Limited | Other services | 2015 |
| Detling House RTM Company Limited | Households | 2019 |
| Deutsch Werks Ltd | Wholesale & retail | 2022 |
| Deutsche Druckfarben UK Limited | Extraterritorial | 2024 |
| Developing Lives Services (2000) Limited | Health & social care | 2014 |
| Development by SJH Limited | Construction | 2024 |
| Development Contracting Limited | Construction | 2004 |
| Development South Limited | Construction | 2012 |
| Developments 24 Ltd | Construction | 2026 |
| Devereux Squared Ltd | Professional & scientific | 2018 |
| Devi Creations Ltd | Wholesale & retail | 2013 |
| Devoluxe Ltd | Wholesale & retail | 2026 |
| Devon Towers Management Limited | Hospitality | 2025 |
| DF Air Conditioning&Heating Ltd | Energy | 2023 |
| DFA Limited | Construction | 2008 |
| Dfi-Itox (UK) Limited | Professional & scientific | 2007 |
| DG Partnership Ltd | Administrative & support | 2016 |
| DG Prime Consulting Limited | Professional & scientific | 2022 |
| Dgdr Limited | Construction | 2022 |
| DH Bournemouth Ltd | Administrative & support | 2016 |
| DH Estate Managment Limited | Real estate | 2024 |
| DH Lease Ltd | Real estate | 2024 |
| DH Supply Limited | Manufacturing | 2021 |
| Dharita and Piyush Limited | Wholesale & retail | 2021 |
| Dhasu IT Ltd | Professional & scientific | 2025 |
| DHC-1 Ltd | Administrative & support | 2018 |
| DI and CA Limited | Wholesale & retail | 2017 |
| DI Marine Ltd | Manufacturing | 2022 |
| Diablo. GRP Ltd | Manufacturing | 2021 |
| Dial Art(P.C.)Limited | Manufacturing | 1971 |
| Diamond Finish Cleaning Services Ltd | Administrative & support | 2025 |
| Diamond Home Maintenance Ltd | Construction | 2025 |
| Diamond Purchasing Limited | Administrative & support | 2016 |
| Diamond Short Stays Ltd | Real estate | 2025 |
| Diamond Trust Consultancy (UK) Limited | Professional & scientific | 1995 |
| Diana Court (Highcliffe) Limited | Households | 2002 |
| Diaraz Ltd | Hospitality | 2022 |
| Dibden Designs Ltd | Information & communication | 2021 |
| Diced Tea Ltd | Wholesale & retail | 2023 |
| Diffusion Invest Ltd | Information & communication | 2013 |
| Digby Court Management Company Limited | Households | 1992 |
| Digibitsymicronanocyberweb Limited | Information & communication | 2017 |
| Digicom Limited | Information & communication | 2009 |
| Digital & Dance Limited | Information & communication | 2023 |
| Digital Assets Management UK Ltd | Information & communication | 2018 |
| Digital Borders Limited | Information & communication | 2014 |
| Digital Butter Ltd | Administrative & support | 2014 |
| Digital Doctors Online Ltd | Wholesale & retail | 2025 |
| Digital Elites Group Limited | Professional & scientific | 2022 |
| Digital Elites Limited | Manufacturing | 2022 |
| Digital FAG Packet Limited | Information & communication | 2012 |
| Digital Home Care Ltd | Manufacturing | 2012 |
| Digital Intelligence Foundry Limited | Information & communication | 2024 |
| Digital Lord Limited | Information & communication | 2021 |
| Digital Marketing Squad Ltd | Professional & scientific | 2022 |
| Digital Mast Ltd | Information & communication | 2015 |
| Digital Monkey Media Limited | Professional & scientific | 2017 |
| Digital Road to Riches Ltd | Wholesale & retail | 2025 |
| Digitalcloudadvisor Ltd | Information & communication | 2022 |
| Digitspot Solutions Ltd | Information & communication | 2026 |
| Dignity Hair Ltd | Other services | 2015 |
| Dikraft Limited | Health & social care | 2016 |
| Dill&Pickle Limited | Hospitality | 2025 |
| Dilli Bournemouth Limited | Hospitality | 2025 |
| Dilrag Limited | Wholesale & retail | 2025 |
| Dimanias Ltd | Wholesale & retail | 2025 |
| Dimeflower Limited | Wholesale & retail | 2018 |
| Dimensions PS Ltd | Real estate | 2018 |
| Ding! Films Limited | Information & communication | 2022 |
| Dingley House Management Company Limited | Households | 2005 |
| Dinkaway Properties Limited | Real estate | 2026 |
| DIO Trading Services Limited | Health & social care | 2023 |
| Dipaw Limited | Construction | 2007 |