| Danvantri Limited | Health & social care | 2018 |
| Dany Trading Ltd | Wholesale & retail | 2025 |
| Danyial & Co Accountants Ltd | Professional & scientific | 2019 |
| DAO Management Limited | Professional & scientific | 2023 |
| Daoa Ltd | Construction | 2023 |
| Daougn Ltd | Wholesale & retail | 2025 |
| DAP DIP Ltd | Information & communication | 2019 |
| DAP Events Limited | Arts & recreation | 2012 |
| DAP Shooter Limited | Professional & scientific | 2025 |
| Daphma Transport Ltd | Transport & logistics | 2025 |
| Daphne Callen Limited | Financial services | 2025 |
| Dapllayne Solutions Limited | Health & social care | 2024 |
| Dappa Homes Limited | Construction | 2003 |
| Dapper Chappy Ltd | Other services | 2019 |
| Dapper Chaps Barber Ltd | Other services | 2025 |
| Dapper Dippers Ltd | Manufacturing | 2019 |
| Dapper Facilities Management Ltd | Administrative & support | 2017 |
| Dapperly Limited | Wholesale & retail | 2025 |
| Daprotein Ltd | Wholesale & retail | 2024 |
| Dapson Properties Limited | Real estate | 2023 |
| Dapsons Ltd | Wholesale & retail | 2009 |
| Dapsyauto Ltd | Professional & scientific | 2026 |
| Daqin Ltd | Manufacturing | 2026 |
| Daquaint Consultancy Limited | Professional & scientific | 2021 |
| DAR (NW) Ltd | Information & communication | 2015 |
| DAR AL Attar for Trading Ltd | Wholesale & retail | 2023 |
| DAR AL Khubaraa for Engineering Consultations Ltd | Wholesale & retail | 2026 |
| DAR and Co Estate Agents Ltd | Real estate | 2019 |
| DAR Electrical Contractors Ltd | Construction | 2018 |
| DAR Holdings NW Ltd | Real estate | 2021 |
| DAR Marble Ltd | Manufacturing | 2022 |
| DAR Property Development Ltd | Construction | 2019 |
| DAR Studio Limited | Professional & scientific | 2019 |
| Dar.Al.Noor Ltd | Wholesale & retail | 2026 |
| Daranca UK Ltd | Wholesale & retail | 2025 |
| Darb Alfazayeh Alshamila for Trading Ltd | Construction | 2025 |
| Darbaar E Peshawar Ltd | Hospitality | 2025 |
| Darbar Balti NW Ltd | Hospitality | 2025 |
| Darbar Restaurant Limited | Hospitality | 2025 |
| Darby Property Investments Ltd | Real estate | 2026 |
| Darcey Property Management Limited | Real estate | 2009 |
| Darcy Industries Limited | Manufacturing | 1994 |
| Dardanella Ltd | Financial services | 2019 |
| Dare Pictures Limited | Arts & recreation | 2021 |
| Dare Pictures North Ltd | Arts & recreation | 2025 |
| Darebee | Arts & recreation | 2016 |
| Dareen Trade Ltd | Wholesale & retail | 2020 |
| Daremaconst Ltd | Construction | 2024 |
| Daren OFF Licence Limited | Wholesale & retail | 2024 |
| Darence Care Services Ltd | Health & social care | 2024 |
| Daresbury Court (Cheadle Hulme) Management Company Limited | Households | 2015 |
| Darfur Industrial Investment Ltd | Wholesale & retail | 2025 |
| Dari Build Ltd | Construction | 2008 |
| Daria Food Ltd | Wholesale & retail | 2019 |
| Darin Manchester Ltd | Hospitality | 2026 |
| Daring Property Limited | Real estate | 2018 |
| Dario (MCR) Ltd | Real estate | 2022 |
| Dario Builders Ltd | Construction | 2021 |
| Darius Perfetti Building Contractors Ltd | Construction | 2018 |
| DARIUS.V5 Ltd | Transport & logistics | 2020 |
| Dariva Ltd | Wholesale & retail | 2019 |
| Darjeeling Indian Take Away Ltd | Hospitality | 2024 |
| Darjeeling Masala Limited | Hospitality | 2026 |
| Darji Software Ltd | Information & communication | 2026 |
| Dark & Night Security Ltd | Administrative & support | 2023 |
| Dark Abyss Productions Ltd | Information & communication | 2021 |
| Dark ALL Day Limited | Hospitality | 2025 |
| Dark Child 21 Limited | Health & social care | 2022 |
| Dark Data Insights Ltd | Information & communication | 2021 |
| Dark Edge Music Limited | Arts & recreation | 2006 |
| Dark Habit Ltd | Hospitality | 2017 |
| Dark Horse FM Ltd | Information & communication | 2025 |
| Dark Lane Studios Ltd | Professional & scientific | 2025 |
| Dark Mako Ltd | Wholesale & retail | 2026 |
| Dark Matter Commerce Limited | Information & communication | 2020 |
| Dark MIC Ltd | Information & communication | 2025 |
| Dark Peak Performance Ltd | Wholesale & retail | 2025 |
| Dark PIE Ltd | Information & communication | 2016 |
| Dark Stride Limited | Wholesale & retail | 2025 |
| Darkstar Collective Limited | Financial services | 2025 |
| Darkwater Collective Limited | Wholesale & retail | 2026 |
| Darlaston Cake and Sweet Shop Ltd | Manufacturing | 2021 |
| Darley Mead Court Management Limited | Households | 1974 |
| Darlington LP | | 2020 |
| Darlington Project Services Limited | Construction | 2015 |
| Darlmond Ltd | Real estate | 2025 |
| Darman Healthcare Limited | Health & social care | 2020 |
| Darmexio Ltd | Wholesale & retail | 2026 |
| Daro Building Management Ltd | Construction | 2019 |
| Daro Building Services Limited | Construction | 2012 |
| Daro Construct Ltd | Construction | 2023 |
| Darocam Services Ltd | Administrative & support | 2022 |
| Darone Chem. Ltd | Professional & scientific | 2024 |
| Daronsoch Services Limited | Professional & scientific | 2026 |
| Daroos Ltd | Hospitality | 2024 |
| Darra Enterprise Ltd | Wholesale & retail | 2025 |
| Darrebni Company Limited | Education | 2023 |
| Darren Green Consulting Services Ltd | Information & communication | 2015 |
| Darren OFF Licence Ltd | Wholesale & retail | 2026 |
| Darren Ollerhead Ltd | Construction | 2026 |