| Dandeb Global Resources Limited | Information & communication | 2015 |
| Dandel Industrial Painting Services Ltd | Construction | 2018 |
| Dandeva | Professional & scientific | 2025 |
| Dandolo Group Ltd | Professional & scientific | 2019 |
| Dandosoftware Limited | Information & communication | 2026 |
| Dane Elliot Rural Restorations Ltd | Construction | 2019 |
| Daneeka IT Services Ltd | Information & communication | 2022 |
| Danem People UK Ltd | Administrative & support | 2014 |
| Danescourt Christian Fellowship | Other services | 2007 |
| Danesh 24/7 Ltd | Wholesale & retail | 2026 |
| Danfon Ltd | Wholesale & retail | 2009 |
| DANIA25 Ltd | Manufacturing | 2026 |
| Danico Care (New Port) Ltd | Health & social care | 2025 |
| Danico Care Ltd | Health & social care | 2022 |
| Daniel Auto Repair Ltd | Wholesale & retail | 2015 |
| Daniel Business Support Ltd | Health & social care | 2018 |
| Daniel Child Limited | Information & communication | 2010 |
| Daniel Dharmalingam Limited | Wholesale & retail | 2025 |
| Daniel Ellis Electrical Services Ltd | Construction | 2019 |
| Daniel Finance Ltd | Financial services | 2018 |
| Daniel Ibby Construction Ltd | Construction | 2025 |
| Daniel Iftime Ltd | Administrative & support | 2018 |
| Daniel James Gillam Ltd | Manufacturing | 2025 |
| Daniel Lawrence TM Ltd | Construction | 2025 |
| Daniel ROE Limited | Administrative & support | 2017 |
| Daniel Sell Limited | Wholesale & retail | 2025 |
| Daniel Site Solutions Ltd | Construction | 2017 |
| Daniela UK Ltd | Financial services | 2006 |
| Daniele Bardis Limited | Wholesale & retail | 2018 |
| Danielle Hair & Beauty T Limited | Other services | 2022 |
| Danielle John LX Consulting Ltd | Professional & scientific | 2025 |
| Danielle's Salon Ltd | Other services | 2026 |
| Daniels Computers and Logistics Ltd | Information & communication | 2022 |
| Danira Care Ltd | Health & social care | 2022 |
| Danish Telecom Limited | Information & communication | 2015 |
| Danlizzy Cleaning Service Limited | Administrative & support | 2025 |
| Danmaq Ltd | Wholesale & retail | 2025 |
| Dannerz Ltd | Wholesale & retail | 2025 |
| Danniek Hair and Beautician Ltd | Other services | 2020 |
| Danny the Dentist Limited | Health & social care | 2014 |
| Danny-M Ltd | Transport & logistics | 2022 |
| Dannydick Ltd | Wholesale & retail | 2019 |
| Danola Properties Ltd | Real estate | 2021 |
| Dans Dens Ltd | Administrative & support | 2022 |
| Danserve Ltd | Construction | 2026 |
| Dantec Dynamics GmbH Ltd | Manufacturing | 2026 |
| Dantech Labels Limited | Manufacturing | 2020 |
| Danuku Transport Ltd | Transport & logistics | 2017 |
| Danyel Trans Ltd | Transport & logistics | 2015 |
| Danygraig Limited | Professional & scientific | 2010 |
| DAO Finances Ltd | Wholesale & retail | 2019 |
| Daofha | Professional & scientific | 2023 |
| DAP Design Studio Ltd | Professional & scientific | 2025 |
| Dapaah Group Ltd | Manufacturing | 2016 |
| Dapek Enterprise Limited | Administrative & support | 2019 |
| Daphne & MIM Ltd | Wholesale & retail | 2021 |
| Daphnee Lanternier Ltd | Professional & scientific | 2021 |
| Dapped Limited | Wholesale & retail | 2018 |
| Dapper Digital Ltd | Professional & scientific | 2025 |
| Dapper FOX Menswear Limited | Wholesale & retail | 2015 |
| Dapper Sandwich Company Ltd. | Hospitality | 2015 |
| Dapple Media Ltd | Information & communication | 2022 |
| Dappledsun Ltd | Wholesale & retail | 2025 |
| Daprimark Ltd | Wholesale & retail | 2025 |
| Daps Consulting Limited | Professional & scientific | 2011 |
| Daptex Group Limited | Wholesale & retail | 2026 |
| DAR AL - Rabbaniyyin for Heritage Ltd | Information & communication | 2026 |
| DAR AL Rafiq Company Ltd | Manufacturing | 2025 |
| DAR Development and Renovation Limited | Construction | 2023 |
| DAR Yateem Home Ltd | Professional & scientific | 2023 |
| Dar-Good Deed Ltd | Real estate | 2024 |
| Dara Maintains Limited | Construction | 2025 |
| Darach Quality Systems UK Ltd | Information & communication | 2023 |
| Darcangelo Properties Ltd | Real estate | 2026 |
| Darcey Williams Psychotherapy Limited | Health & social care | 2013 |
| Darch Electrical Limited | Construction | 2017 |
| Dare Creative Limited | Professional & scientific | 2023 |
| Dare to Move Ltd | Education | 2025 |
| Dare to Practice Technology Co., Ltd | Wholesale & retail | 2021 |
| Darenshow Household Supplies Co., Ltd. | Administrative & support | 2020 |
| Dargan Coffee Company Ltd | Financial services | 2025 |
| Darhill Construction Limited | Construction | 2024 |
| Dari Group Limited | Wholesale & retail | 2024 |
| Daring Adventure Pictures Ltd | Information & communication | 2023 |
| Daringbloom Ltd. | Wholesale & retail | 2025 |
| Dario Residential Ltd | Real estate | 2016 |
| Dario Security Co Ltd | Administrative & support | 2018 |
| Darius Building Construction Ltd | Construction | 2023 |
| Darius Dumitru Ltd | Transport & logistics | 2019 |
| Darius Trader Ltd | Construction | 2019 |
| Dariusz Palica Ltd | Information & communication | 2019 |
| Dark Bean Cafe Ltd | Hospitality | 2009 |
| Dark Reign Entertainment Ltd. | Information & communication | 2019 |
| Dark River Limited | Information & communication | 2025 |
| Dark Whale Intelligence Ltd | Information & communication | 2024 |
| Darkala Services Ltd | Wholesale & retail | 2021 |
| Darla Ltd | Wholesale & retail | 2016 |
| Darlaston Road Residents Association Limited(The) | Real estate | 1963 |
| Darling Buds FS Limited | Education | 2020 |
| Darlow Homes (Banbury) Ltd | Extraterritorial | 2017 |