| Designforyou Ltd | Construction | 2025 |
| Designme London Ltd | Professional & scientific | 2022 |
| Designs by Wintur Ltd | Arts & recreation | 2025 |
| Designsview Limited | Information & communication | 2015 |
| Desirable UK Ltd | Wholesale & retail | 2026 |
| Desire Production House Limited | Information & communication | 2024 |
| Desired IT Solution Limited | Wholesale & retail | 2024 |
| Destined Eldee Ltd | Wholesale & retail | 2022 |
| Deswal Transport Ltd | Transport & logistics | 2024 |
| Detail Hub Essex Ltd | Administrative & support | 2025 |
| DEV Chand Limited | Construction | 2008 |
| Devagiri Limited | Health & social care | 2023 |
| Devagiri Properties Ltd | Real estate | 2023 |
| Devcrabs Ltd | Information & communication | 2026 |
| Develapa UK Ltd | Financial services | 2025 |
| Development & Maintenance Ltd | Other services | 2020 |
| Devine Flower Property Limited | Real estate | 2022 |
| Devintu Ltd | Transport & logistics | 2016 |
| Devito Codes Ltd | Information & communication | 2020 |
| Devnova Ltd | Information & communication | 2024 |
| Devolin-Mai Limited | Arts & recreation | 2017 |
| Devolt Electricians Ltd | Construction | 2023 |
| Devon Lawrence Recruitment Ltd | Administrative & support | 2007 |
| Devos & Sons Ltd | Health & social care | 2016 |
| Devoteduk Limited | Health & social care | 2014 |
| Devrim Technologies Limited | Administrative & support | 2017 |
| Dewright Electrical Services Ltd | Construction | 2026 |
| Dews Hall Farm Management Company Limited | Real estate | 2020 |
| Dexaware Consultancy Service Ltd | Information & communication | 2015 |
| Dexplat Ltd | Wholesale & retail | 2026 |
| Dexter Dash & Associates Ltd | Professional & scientific | 2017 |
| Deyaar Ltd | Hospitality | 2025 |
| DF Cost Consultants Limited | Administrative & support | 2015 |
| DFG Logistics Training Ltd | Hospitality | 2025 |
| DG Electrica Ltd | Other services | 2020 |
| DG Roof Cleaning & Coating Ltd | Construction | 2024 |
| Dgkm Lettings Ltd | Real estate | 2019 |
| DGN Estates Ltd | Real estate | 2021 |
| DGN Group Holdings Ltd | Financial services | 2025 |
| DGR Services Limited | Professional & scientific | 2018 |
| Dgsa Service & Consultancy Limited | Professional & scientific | 2022 |
| DH Bathrooms and Kitchens Ltd | Construction | 2018 |
| DH Ceilings (Essex) Ltd | Construction | 2016 |
| DH Liquid Coatings Ltd | Construction | 2017 |
| DHA UK Services Ltd | Administrative & support | 2018 |
| Dhaka Traders Ltd | Wholesale & retail | 2022 |
| Dhaliwal-Mann Limited | Health & social care | 2026 |
| Dhanya Consulting Ltd | Information & communication | 2021 |
| DHC Comms Ltd | Information & communication | 2010 |
| Dheemahi Ventures Ltd | Hospitality | 2026 |
| Dhenda International Ltd | Manufacturing | 2023 |
| Dhillionaire Consultancy Limited | Administrative & support | 2013 |
| Dhillionaire Homes Limited | Real estate | 2026 |
| Dhillon Property Services Ltd | Financial services | 2025 |
| Dhnn Limited | Real estate | 2025 |
| Dhother Construction Ltd | Construction | 2022 |
| DI YA Traders Ltd | Wholesale & retail | 2025 |
| Dialon Estates Limited | Real estate | 2021 |
| Dialon Limited | Hospitality | 2013 |
| Dialon Restaurants Limited | Hospitality | 2023 |
| Dialon Retails Canterbury Limited | Wholesale & retail | 2025 |
| Dialon Retails Limited | Wholesale & retail | 2021 |
| Dialon Retails Sevenoaks Limited | Wholesale & retail | 2026 |
| Diamant DK Services Ltd | Transport & logistics | 2019 |
| Diamante Property Management Ltd | Real estate | 2023 |
| Diamira Ltd | Construction | 2025 |
| Diamond 4 Support & Services Ltd | Health & social care | 2025 |
| Diamond Beauty Academy Ltd | Health & social care | 2021 |
| Diamond Brush Decorators Ltd | Construction | 2024 |
| Diamond Builders Essex Limited | Construction | 2024 |
| Diamond Courier UK Services Ltd | Transport & logistics | 2017 |
| Diamond Hair and Cosmetics Ltd | Wholesale & retail | 2017 |
| Diamond in the Sky London Ltd | Wholesale & retail | 2023 |
| Diamond in the Sky Ltd | Wholesale & retail | 2022 |
| Diamond K Properties Ltd | Real estate | 2021 |
| Diamond Kitchen and Bedroom Limited | Manufacturing | 2024 |
| Diamond Mediawall Ltd | Professional & scientific | 2026 |
| Diamond Star Digital Consulting Ltd | Wholesale & retail | 2023 |
| Diamond Time CIC | Wholesale & retail | 2023 |
| Diamond Wealth Investments Limited | Wholesale & retail | 2017 |
| Diamondz Consulting Limited | Professional & scientific | 2016 |
| DIB Contractors Ltd | Construction | 2020 |
| Dice Digital Limited | Information & communication | 2014 |
| Dicing With Life CIC | Education | 2020 |
| Didier Natural Food Ltd | Wholesale & retail | 2026 |
| Different Beauty Ltd | Transport & logistics | 2017 |
| Different Class Cars Limited | Wholesale & retail | 2002 |
| Digi Builders Ltd | Construction | 2018 |
| Digi Comit Trading & Services Ltd | Wholesale & retail | 2020 |
| Digi Consultants Ltd | Professional & scientific | 2022 |
| Digiliti Ltd | Information & communication | 2013 |
| Digioverse Ltd | Wholesale & retail | 2026 |
| Digisys Agency Ltd | Information & communication | 2023 |
| Digital Blitz Ltd | Information & communication | 2023 |
| Digital Brainbox Ltd | Information & communication | 2022 |
| Digital Brand Ambassador Ltd | Wholesale & retail | 2026 |
| Digital by Nature Ltd | Information & communication | 2023 |
| Digital Combat Agency Ltd | Administrative & support | 2022 |
| Digital Electronic Resources Limited | Education | 2020 |
| Digital Health Innovations Ltd | Manufacturing | 2025 |