| Dark Horse Gerenal Trading Ltd | Wholesale & retail | 2023 |
| Dartford Precast Limited | Construction | 2018 |
| Darvanvic Ltd | Construction | 2024 |
| Dasht Services Ltd | Health & social care | 2020 |
| Dass Cluster Ltd | Wholesale & retail | 2025 |
| Datacorp London Limited | Information & communication | 2013 |
| David Andres Limited | Transport & logistics | 2016 |
| Davidsen Ltd | Hospitality | 2011 |
| Davidsen Retail Ltd | Wholesale & retail | 2015 |
| Dawn Maureen Nairne Ltd | Extraterritorial | 2023 |
| Dayib Consulting Ltd | Professional & scientific | 2025 |
| Daystarr Limited | Health & social care | 2013 |
| DB VAC Limited | Construction | 2016 |
| DBC4 Ltd | Manufacturing | 2018 |
| DC Admin Support Limited | Administrative & support | 2024 |
| Dchholdings Ltd | Real estate | 2018 |
| DDS Vision Construction Ltd | Construction | 2026 |
| DDT Tech Limited | Information & communication | 2024 |
| DE Nogla Enterprise Limited | Other services | 2022 |
| DEA Worldwide Ltd | Real estate | 2019 |
| Deal Drop 786 Ltd | Wholesale & retail | 2025 |
| DEALS4U Limited | Wholesale & retail | 2020 |
| Debanj Ltd. | Transport & logistics | 2010 |
| Decc Healthcare Limited | Administrative & support | 2021 |
| Decision Muscle Ltd | Information & communication | 2025 |
| Deco Renovation Ltd | Administrative & support | 2017 |
| Decodetech Limited | Information & communication | 2025 |
| Decor Experts Ltd | Construction | 2017 |
| Decor Home UK Ltd | Real estate | 2014 |
| Decorate Kitchen & Bedrooms Ltd | Construction | 2022 |
| Decosol Ltd | Construction | 2023 |
| Deenroute Ltd | Information & communication | 2026 |
| Dejie Computer Services Ltd | Information & communication | 2015 |
| DEL Connect Ltd | Construction | 2020 |
| Delivermech Services Ltd | Professional & scientific | 2026 |
| Deliveryba Ltd | Information & communication | 2024 |
| Dembele Limited | Wholesale & retail | 2020 |
| Denis Building Services Limited | Construction | 2014 |
| Dennis&Co Sparks Electrical Ltd | Construction | 2023 |
| Dentogram Ltd | Health & social care | 2025 |
| Depta Developments Limited | Real estate | 2020 |
| Derevointeriors Limited | Construction | 2009 |
| Desborough Road 2 Ltd | Real estate | 2026 |
| Desborough Road 4 Ltd | Real estate | 2026 |
| Design Bean Ltd | Extraterritorial | 2019 |
| Despite Recruitment and Care Training Services Ltd | Health & social care | 2019 |
| Devolt Trading Ltd | Manufacturing | 2026 |
| Dewa Awed Limited | Transport & logistics | 2017 |
| Dewa Northolt Unit 1 Limited | Real estate | 2014 |
| DH Whites Ltd | Health & social care | 2024 |
| Dharma Cosmetic Wholesale Ltd | Wholesale & retail | 2026 |
| Dhillon RS Limited | Transport & logistics | 2026 |
| Dhunna Haulage Ltd | Transport & logistics | 2017 |
| Digital Dose Ltd | Manufacturing | 2023 |
| Digitalberg Ltd | Information & communication | 2025 |
| Dillon's Appliance Care Limited | Professional & scientific | 2018 |
| Dilz Distribution Ltd | Wholesale & retail | 2023 |
| Dimi 64 Limited | Transport & logistics | 2006 |
| Diminina Ltd | Other services | 2013 |
| Dipak Estate Limited | Real estate | 2025 |
| Distinctive Builders Ltd | Construction | 2024 |
| Divraj Limited | Transport & logistics | 2024 |
| DJ Lynch Ltd | Hospitality | 2026 |
| Djma Trans Ltd | Transport & logistics | 2022 |
| DK Metal Fabrications Ltd | Construction | 2021 |
| DLS Sellers Ltd | Wholesale & retail | 2025 |
| DM Bridgewater Properties Limited | Real estate | 2021 |
| Dmrm Limited | Construction | 2014 |
| Dnkat Ltd | Energy | 2016 |
| DNR Enterprise Limited | Transport & logistics | 2020 |
| DO IT Once Ltd | Construction | 2024 |
| Doctor Toy Ltd | Wholesale & retail | 2023 |
| Dola Glamour Ltd | Other services | 2021 |
| Dorin Sync Construction Limited | Construction | 2024 |
| Doughlads Wood Fired Pizza Ltd | Hospitality | 2019 |
| Dpls Services Ltd | Transport & logistics | 2021 |
| DPS Builder Limited | Construction | 2026 |
| DR Esta Clinic Ltd | Health & social care | 2023 |
| DR Nathalie Aesthetics Limited | Health & social care | 2022 |
| DR Pathmarajah Dermatology Limited | Health & social care | 2025 |
| Drama Club Ltd | Education | 2025 |
| DRC Rigging Ltd | Construction | 2019 |
| Dream Home Construction (UK) Limited | Construction | 2014 |
| Dream Home Ventures Ltd | Construction | 2022 |
| Drib LAB Ltd | Hospitality | 2026 |
| Drip SIP Ltd | Wholesale & retail | 2025 |
| Driveforce Ltd | Wholesale & retail | 2025 |
| Drogalski Ltd | Professional & scientific | 2021 |
| Droploader Ltd | Professional & scientific | 2025 |
| DS Creative Properties Ltd | Real estate | 2025 |
| DS Professionals Services Limited | Health & social care | 2020 |
| Dthomeopathy Ltd | Health & social care | 2024 |
| Dumit Construction Ltd | Construction | 2020 |
| Durat Al-Sharq Limited | Wholesale & retail | 2025 |
| Dusty Temp Limited | Health & social care | 2019 |
| Dutu Construction Ltd | Other services | 2017 |
| DVM Solution Ltd | Construction | 2022 |
| Dylan Investment Limited | Real estate | 2019 |
| Dynag Limited | Financial services | 2015 |
| Dynamic Childrens Services Consultancy Ltd | Health & social care | 2008 |