| Desi Fusion Food Ltd | Hospitality | 2025 |
| Desirous Consultant Limited | Transport & logistics | 2019 |
| Destiny Pathways Limited | Administrative & support | 2025 |
| Dewhurst & Partner Limited | Professional & scientific | 1985 |
| Dewhurst Group Limited | Manufacturing | 1919 |
| Dewhurst Hounslow Property Limited | Extraterritorial | 2009 |
| Dewhurst Limited | Manufacturing | 2009 |
| Dewhurst UK Limited | Extraterritorial | 2021 |
| DG Executive Ltd | Transport & logistics | 2026 |
| DG Express Packing Ltd | Administrative & support | 2025 |
| DG Home Solutions Ltd | Financial services | 2025 |
| Dh@A Limited | Financial services | 2022 |
| Dhaliwal Pride Ltd | Transport & logistics | 2023 |
| Dhanjal Transport Ltd | Transport & logistics | 2026 |
| Dhanvarsha Consultant Ltd | Wholesale & retail | 2024 |
| Dhanwin Trading Limited | Wholesale & retail | 2025 |
| Dhanya Infotech Ltd | Information & communication | 2017 |
| Dhara Ltd | Real estate | 2008 |
| DHI Property Group Ltd | Real estate | 2025 |
| DHI Property Ltd | Real estate | 2016 |
| Dhillon Builders Ltd | Construction | 2019 |
| Dhillon Property Holdings Ltd | Real estate | 2025 |
| DHK Transport Ltd | Transport & logistics | 2010 |
| Dhot Motors London Limited | Wholesale & retail | 2025 |
| Dhyan Properties Limited | Real estate | 2025 |
| Dhyey Tuition Ltd | Education | 2023 |
| Di&Si Ashirvad Limited | Real estate | 2025 |
| Diamond Investment Ventures Limited | Hospitality | 2017 |
| Diana's Management Ltd | Professional & scientific | 2024 |
| Dianamart Limited | Transport & logistics | 2023 |
| Dias & Branson Ltd | Households | 2022 |
| Dias Logistics Ltd | Transport & logistics | 2024 |
| Different Removal Ltd | Wholesale & retail | 2024 |
| Digicom Business Solution Ltd | Professional & scientific | 2008 |
| Digitab Services Ltd | Information & communication | 2011 |
| Digital Embedded Limited | Information & communication | 2025 |
| Dilly Kitchen Ltd | Hospitality | 2022 |
| Dimensional Data Solutions Limited | Information & communication | 2015 |
| Dimora Property Solutions Ltd | Real estate | 2024 |
| DIN N VIN Limited | Administrative & support | 2019 |
| Dineko Ltd | Construction | 2020 |
| Dingxuan Limited | Wholesale & retail | 2013 |
| Dipak Homes Limited | Real estate | 2025 |
| Diram Transport Ltd | Transport & logistics | 2019 |
| Direct London Services and Consultations Ltd | Construction | 2016 |
| Directwork Ltd | Construction | 2012 |
| Discount World London Ltd | Wholesale & retail | 2025 |
| Discover Logistics Network Ltd | Transport & logistics | 2012 |
| Disobedient Beauty Ltd | Wholesale & retail | 2021 |
| Distinguished Gentleman London Limited | Transport & logistics | 2018 |
| Divakoch Ltd | Wholesale & retail | 2021 |
| Divedropdeals Ltd | Wholesale & retail | 2025 |
| Diverse Little Colours CIC | Education | 2023 |
| Dixie Food Ltd | Wholesale & retail | 2023 |
| DJ Eco Heating Limited | Construction | 2012 |
| Djsa Sales Limited | Wholesale & retail | 2019 |
| Djsunnysinghuk Ltd | Information & communication | 2022 |
| DKJ Transport Limited | Transport & logistics | 2021 |
| DLC Fitted Furniture Ltd | Manufacturing | 2012 |
| DLY Shipping Ltd | Transport & logistics | 2023 |
| DMD Hospitality Limited | Hospitality | 2025 |
| DMP Gardening Services Ltd | Other services | 2020 |
| Dnicole Limited | Wholesale & retail | 2023 |
| Doaa Diamond Limited | Manufacturing | 2024 |
| Doctor Wheels Ltd | Wholesale & retail | 2022 |
| Doffay IT Ltd | Information & communication | 2026 |
| Dojod Ltd | Manufacturing | 2023 |
| Domestic & Commercial Appliances Ltd | Manufacturing | 2022 |
| Domicile Contracting Limited | Construction | 2025 |
| Dominell Ltd | Professional & scientific | 2025 |
| Domlay Properties Limited | Real estate | 2022 |
| Domum INV Limited | Construction | 2019 |
| Donaldson Reeves Limited | Wholesale & retail | 2003 |
| Door Ltd | Construction | 2026 |
| Doors and Sashes Ltd | Manufacturing | 2017 |
| Dor-Solutions Limited | Administrative & support | 2024 |
| Dore to Door Holdings Limited | Financial services | 2020 |
| Dore to Door Specialist Handling Limited | Transport & logistics | 2008 |
| Dore to Door Warehousing LLP | | 2015 |
| DOT Cart Ltd | Wholesale & retail | 2025 |
| Doublesmash Limited | Hospitality | 2024 |
| Dourisca Ltd | Real estate | 2025 |
| Doylle & Co Ltd | Other services | 2025 |
| DP Sales Limited | Wholesale & retail | 2020 |
| Dpnex Limited | Transport & logistics | 2026 |
| DPS Sports Limited | Arts & recreation | 2023 |
| DPT Real Estate Ltd | Real estate | 2024 |
| DR GUO Ltd | Health & social care | 2013 |
| Dr.Lens Tech Limited | Information & communication | 2019 |
| Dr.T Barbers Ltd | Health & social care | 2020 |
| Dragony Services Ltd | Information & communication | 2022 |
| Drcloudsi Ltd | Wholesale & retail | 2024 |
| Dream Team Care Ltd | Health & social care | 2022 |
| Dreamhouse International Limited | Wholesale & retail | 2023 |
| Dreamland Property Investment Ltd | Real estate | 2025 |
| Dreampurity Limited | Water & waste | 2025 |
| DREAMTEAM11 Ltd | Wholesale & retail | 2025 |
| DRH Metals Limited | Manufacturing | 2025 |
| Drinkonme Ltd | Information & communication | 2026 |
| Driveit Global Ltd | Information & communication | 2018 |