| Dersea Ltd | Manufacturing | 2014 |
| Dertrans Ltd | Transport & logistics | 2012 |
| Deserve Ltd | Wholesale & retail | 2026 |
| Design Brand Agency Ltd | Administrative & support | 2020 |
| Design CB Ltd | Professional & scientific | 2015 |
| Design Construction Investment Limited | Construction | 2015 |
| Design I.D. Limited | Administrative & support | 2005 |
| Design Nucleus Limited | Professional & scientific | 2019 |
| Design Studio LAB Ltd | Information & communication | 2018 |
| Design Workshop (Europe) Limited | Administrative & support | 2000 |
| DESIGN4ELSE Ltd | Other services | 2009 |
| Designwerk Ltd | Professional & scientific | 2006 |
| Designwerk UK Ltd | Other services | 2008 |
| Destinysjesus Ltd | Information & communication | 2021 |
| Deus Solutions Limited | Information & communication | 2008 |
| Deux Brus Limited | Wholesale & retail | 2020 |
| Devalca Solutions Limited | Construction | 2023 |
| Developing Consultants Limited | Administrative & support | 2007 |
| Devere Solutions Ltd | Construction | 2020 |
| Devi Housing Limited | Real estate | 2026 |
| Devils Kneading Trough Restaurant | | 1990 |
| Devils on Horseback LLP | | 2026 |
| Devon Palms Limited | Hospitality | 2016 |
| Devz UK Limited | Information & communication | 2017 |
| Dewintons Limited | Professional & scientific | 2024 |
| Dexra Solutions Limited | Information & communication | 2013 |
| Dexter Digital Ltd | Information & communication | 2022 |
| DF Rail Ltd | Construction | 2022 |
| DFY Leads Ltd | Administrative & support | 2024 |
| Dg's (Kent, UK) Limited | Financial services | 2019 |
| DGF Construction Ltd | Construction | 2024 |
| DGR Surfaces Limited | Construction | 2021 |
| DH Midlands Ltd | Professional & scientific | 2022 |
| DH Rail Ltd | Construction | 2025 |
| DH Roofing & Property Maintenance Ltd | Construction | 2022 |
| Dhaliwal Property Management Ltd | Real estate | 2021 |
| Dhamrait Capital Ltd | Professional & scientific | 2023 |
| Dhamrait Ventures Ltd | Information & communication | 2026 |
| Dharaghar Limited | Real estate | 2025 |
| Dhevarom Ltd | Real estate | 2022 |
| DIA Properties Limited | Real estate | 2011 |
| Diafra Ltd | Information & communication | 2025 |
| Dialogue Matters Ltd | Professional & scientific | 2010 |
| Diamond C Ltd | Transport & logistics | 2025 |
| Diamond Carwash Kent Ltd | Other services | 2021 |
| Diamond Floorings Limited | Construction | 2005 |
| Diamond Hill Garden Design Ltd | Information & communication | 2020 |
| Diamond Search Recruitment Limited | Administrative & support | 2017 |
| Diamond Socials Limited | Other services | 2022 |
| Diamonds Shine Solutions Limited | Administrative & support | 2026 |
| Diaz Holidays Ltd | Hospitality | 2024 |
| Dieter Christian Limited | Other services | 2016 |
| Diff Rent Solution Ltd | Real estate | 2022 |
| Differences NOT Disabilities Support CIC | Education | 2026 |
| Differencesnotdisabilities Ltd | Education | 2024 |
| Digby Wells and Associates (International) Ltd | Professional & scientific | 2010 |
| Digby Wells Environmental Holdings Limited | Financial services | 2022 |
| Digby Wells Share Company Limited | Other services | 2024 |
| Digireach Solutions Ltd | Information & communication | 2025 |
| Digital Audio Experts Limited | Professional & scientific | 2019 |
| Digital Battenberg Limited | Information & communication | 2021 |
| Digital Echoes Ltd | Information & communication | 2019 |
| Digital Future Consulting Ltd | Professional & scientific | 2016 |
| Digital Oak Ltd | Professional & scientific | 2026 |
| Digital Print & Mail Limited | Wholesale & retail | 2024 |
| Dillons Enterprise Limited | Construction | 2020 |
| Dillywood Tearooms Limited | Hospitality | 2024 |
| Dimi Happy Kent Ltd | Construction | 2022 |
| Dimov Group Ltd | Wholesale & retail | 2023 |
| Dings, Dents & Trims Ltd. | Wholesale & retail | 2012 |
| Dinneck Limited | Wholesale & retail | 2010 |
| Dionmac Ltd | Construction | 2017 |
| Dionysus Wines Ltd | Wholesale & retail | 2022 |
| DIR Kent Ltd | Real estate | 2023 |
| Direct Buying Consultants Limited | Wholesale & retail | 1986 |
| Direct Car Sales Limited | Wholesale & retail | 2021 |
| Direct Damp Solutions Ltd | Construction | 2024 |
| Direct Improvements London Ltd | Construction | 2022 |
| Directdisco.Com Limited | Other services | 2014 |
| Directed Evolution Consulting Ltd | Administrative & support | 2017 |
| Directed Evolution Ltd | Wholesale & retail | 2020 |
| Directed Professional Consultancy Ltd | Administrative & support | 2023 |
| Directline Holdings Limited | Professional & scientific | 1988 |
| Directline Structures Limited | Construction | 1989 |
| Disc-Chain Consultants Limited | Hospitality | 1996 |
| Discoverable Holding Limited | Professional & scientific | 2019 |
| Discoverable Limited | Information & communication | 1998 |
| Discreet Movements Limited | Transport & logistics | 2023 |
| Disestablishment Production Company Ltd | Administrative & support | 2019 |
| Dissmiss Ltd | Wholesale & retail | 2018 |
| Distinct Hair Design Ltd | Other services | 2022 |
| Distinct Property Management Services Limited | Real estate | 2022 |
| District Park Management Company Limited | Real estate | 2020 |
| DISTRICT23 Ltd | Manufacturing | 2026 |
| Districtway Limited | Real estate | 2003 |
| Diverse Lets Limited | Real estate | 2023 |
| Diverse Student Lets Limited | Real estate | 2021 |
| Divine Assets Ltd | Real estate | 2019 |
| Divine Beauty Bar Ltd | Other services | 2026 |
| Divine Estate Management Limited | Real estate | 2022 |