| Dapper Footwear Ltd | Wholesale & retail | 2014 |
| DAR Trading Limited | Transport & logistics | 2017 |
| Dar&Res Ltd | Transport & logistics | 2025 |
| Dardaniaresidential Ltd | Real estate | 2023 |
| Dario Property Ltd | Real estate | 2021 |
| Darul Amaan Construction Ltd | Health & social care | 2025 |
| Darvell Homes Limited | Real estate | 2020 |
| DAS Property Enterprise Limited | Real estate | 2017 |
| Data Systems Development Limited | Information & communication | 2011 |
| Datco International MEP Engineering Ltd | Administrative & support | 2026 |
| Datla Projects Limited | Construction | 2021 |
| Dave & Co Consultants Limited | Professional & scientific | 2010 |
| Davies E&P Limited | Construction | 2025 |
| Dawood Heating & Plumbing Services Ltd | Water & waste | 2019 |
| DB Distributions Ltd | Water & waste | 2022 |
| DBP Engineering Ltd | Professional & scientific | 2020 |
| Dcelis Consultancy Ltd | Information & communication | 2013 |
| DCH Investments Limited | Real estate | 2018 |
| Ddbb Traders Ltd | Wholesale & retail | 2019 |
| DE Haas Ltd | Real estate | 2021 |
| DE Tempete Limited | Professional & scientific | 2024 |
| DE Winter’S Property Services Ltd | Construction | 2023 |
| Dean Coleman Consultancy Limited | Professional & scientific | 2015 |
| DEAN91 Construction Ltd | Construction | 2021 |
| Decruz Sports Coaching Limited | Education | 2019 |
| DEE BEE Pro Limited | Households | 2020 |
| DEE FLY Ltd | Transport & logistics | 2026 |
| Deekeli Limited | Professional & scientific | 2026 |
| Deel Trading Ltd | Transport & logistics | 2023 |
| Deen Removals and Storage Ltd | Transport & logistics | 2024 |
| Degen Investments Limited | Financial services | 2021 |
| Dekor Build Limited | Construction | 2017 |
| Deliverify Ltd | Wholesale & retail | 2020 |
| Delphinus Data Ltd | Administrative & support | 2017 |
| Delta Link Inc Limited | Wholesale & retail | 2024 |
| Deluxe Pizza Morden Limited | Hospitality | 2021 |
| Dematemi Ltd | Health & social care | 2022 |
| Demiror Ltd | Real estate | 2023 |
| Demo Development Limited | Wholesale & retail | 2024 |
| Denby Partners Ltd | Real estate | 2011 |
| Dengino's Ltd | Construction | 2017 |
| Denis 93 Ltd | Construction | 2025 |
| Denny's Restaurants Ltd | Hospitality | 2022 |
| Dentronix Limited | Health & social care | 2026 |
| Deohealth Pharmaceutical Company Ltd | Wholesale & retail | 2024 |
| Deol Consortium Ltd | Real estate | 2026 |
| Deol's Sons Ltd | Real estate | 2017 |
| Deol’S Corporation Ltd | Real estate | 2022 |
| Derma Fair Ltd | Wholesale & retail | 2025 |
| Derpilan Limited | Wholesale & retail | 2019 |
| Desi Delights Ltd | Hospitality | 2022 |
| Design a Nail Limited | Manufacturing | 2025 |
| Design Central Ltd | Information & communication | 2018 |
| Designstudio - Lopes DA Silva Ltd. | Professional & scientific | 2015 |
| Desroche Ltd | Health & social care | 2023 |
| Detail and Draft Ltd | Hospitality | 2025 |
| Devan K Consulting Limited | Other services | 2024 |
| Developex Training and Consulting Ltd | Professional & scientific | 2020 |
| Devki Devi Ltd | Health & social care | 2013 |
| Devki Holds Ltd | Financial services | 2024 |
| Dgwizard Limited | Professional & scientific | 2012 |
| DH Logistics London Ltd | Transport & logistics | 2025 |
| DHA Property Ltd | Real estate | 2026 |
| DHD Hold Ltd | Financial services | 2021 |
| DHD Import Export Ltd | Other services | 2009 |
| Dhyeydev Brothers Limited | Wholesale & retail | 2025 |
| Diamond IT London Limited | Information & communication | 2014 |
| Diamond Pomeranians Ltd | Agriculture & fishing | 2025 |
| Diamonds Homecare Limited | Transport & logistics | 2019 |
| Diamzo Diamond UK Ltd | Wholesale & retail | 2025 |
| Digi Media-Uk Ltd | Information & communication | 2018 |
| Digispan Ltd | Professional & scientific | 2023 |
| Digital a Ltd | Information & communication | 2016 |
| Digital Mindz Information Technologies Ltd | Information & communication | 2025 |
| Digital Skills NOW CIC | Education | 2026 |
| DIL KAY Haath Ltd | Health & social care | 2015 |
| Dila Limited | Other services | 2015 |
| Dilax Ltd | Real estate | 2016 |
| Diligent Care Services Ltd | Health & social care | 2007 |
| Dillan Vaghela Ltd | Wholesale & retail | 2019 |
| DIN Asset Management Ltd | Real estate | 2024 |
| DIN Driving School Ltd | Education | 2019 |
| DIN Holds Ltd | Financial services | 2021 |
| DIN Property Investment Ltd | Real estate | 2021 |
| DIN UK Trading Ltd | Wholesale & retail | 2021 |
| Dinnick & Howells Limited | Information & communication | 2006 |
| Diplomatic Car Services (UK) Limited | Transport & logistics | 2006 |
| Direct Appliances Centre UK Limited | Other services | 2012 |
| Discorock Ltd | Manufacturing | 2026 |
| Distarz Health Ltd | Wholesale & retail | 2025 |
| Distinct Wood Ltd | Construction | 2021 |
| Diver Developments Ltd | Construction | 2021 |
| Diverse Minds Clinic Limited | Other services | 2018 |
| Diversity Consultants Ltd | Professional & scientific | 2021 |
| Divine Management Ltd | Other services | 2015 |
| Divine Recruitment Limited | Administrative & support | 2021 |
| Diwaxan Ltd | Hospitality | 2019 |
| DJ & CJ Properties Limited | Real estate | 2024 |
| Djdm Ltd | Construction | 2023 |
| DJR Property and Maintenance Services Ltd | Construction | 2026 |