| Daily E-Com UK Ltd | Wholesale & retail | 2024 |
| Dainton Housing & Support Ltd | Administrative & support | 2003 |
| Dairy Holiday Lets Ltd | Real estate | 2024 |
| Dais Genie Ltd | Information & communication | 2025 |
| Daised Limited | Professional & scientific | 2017 |
| Daish Transport Limited | Transport & logistics | 2015 |
| Daisy Fields Management Company Limited | Households | 2006 |
| Daisy Roots CIC | Education | 2025 |
| Daizach Ltd | Information & communication | 2013 |
| Dajka Marketing Ltd | Hospitality | 2019 |
| Dajt Consultancy Ltd | Professional & scientific | 2015 |
| Dajt Property Ltd | Real estate | 2016 |
| DAK Carpentry & Joinery Limited | Construction | 2017 |
| Dakota Consulting Ltd | Information & communication | 2011 |
| Dakr Automotive Ltd | Wholesale & retail | 2022 |
| Dakr Services Limited | Construction | 2017 |
| Dale Valley Accountancy Limited | Professional & scientific | 2001 |
| Daleep Limited | Real estate | 2017 |
| Dalehurst Construction Ltd | Construction | 2026 |
| Dalex Solutions Ltd | Health & social care | 2018 |
| Dali Global Ltd | Wholesale & retail | 2025 |
| Dalia Palace Ltd | Hospitality | 2025 |
| Dall Commercial Window Cleaning Ltd | Administrative & support | 2014 |
| Dalliance & Noble Limited | Manufacturing | 2017 |
| Dalph Recovery & Vehicle Sales Ltd | Wholesale & retail | 2021 |
| Dalph Retail Ltd | Wholesale & retail | 2021 |
| Dalrymple Scientific Consulting Limited | Professional & scientific | 2023 |
| Dalta Logistics Limited | Transport & logistics | 2023 |
| Dalviar & Sons Ltd | Wholesale & retail | 2023 |
| DAM Good Artists Limited | Administrative & support | 2024 |
| DAM Good Distribution Limited | Information & communication | 2022 |
| DAM Good Payments Limited | Financial services | 2024 |
| DAM1948 Ltd | Other services | 2025 |
| Damage Leisure Lettings Ltd | Administrative & support | 2016 |
| Damalis Ltd | Health & social care | 2022 |
| Damar Scaffolding Limited | Construction | 2004 |
| Damian Mach Limited | Construction | 2016 |
| Damien Groundworks Limited | Construction | 2015 |
| Damn That’S Clean by Guidance Ltd | Administrative & support | 2025 |
| Damonrio Ltd | Real estate | 2023 |
| Damson Hill Cottage Limited | Hospitality | 2025 |
| Damytravel Ltd | Administrative & support | 2018 |
| DAN Augustine Care Limited | Health & social care | 2019 |
| DAN Beale Training and Consultancy Ltd | Education | 2025 |
| DAN Reid Limited | Arts & recreation | 2003 |
| Dana Pharma Limited | Wholesale & retail | 2025 |
| Dana-Legal Limited | Information & communication | 2024 |
| Danabeck Limited | Professional & scientific | 2008 |
| Danamere Stanbridge Corporate Services Limited | Administrative & support | 2024 |
| Danaro Limited | Professional & scientific | 2023 |
| Danatz Properties & Developments Ltd | Real estate | 2023 |
| Dance Attire Limited | Other services | 2018 |
| Dancing MAN Brewery Limited | Manufacturing | 2011 |
| Dancing With a Difference Ltd | Arts & recreation | 2018 |
| Dandara Wales & West Limited | Construction | 2021 |
| Dandfx Ltd | Professional & scientific | 2025 |
| Dandini's Dog Grooming Limited | Other services | 2017 |
| Dandyson's Ltd | Construction | 2026 |
| Daneen Facilities Ltd | Transport & logistics | 2026 |
| Danelu Ltd | Transport & logistics | 2021 |
| Danestream Property Consultants Ltd | Professional & scientific | 2019 |
| Danex Ltd | Transport & logistics | 2023 |
| Danger Mouse Ltd | Information & communication | 2015 |
| Dangme Ltd | Education | 2025 |
| DANGOODFOOD1983 Limited | Hospitality | 2025 |
| Dani George Ltd | Transport & logistics | 2025 |
| Dani-Deea Bakery Ltd | Manufacturing | 2021 |
| Danica Payne Ltd | Wholesale & retail | 2018 |
| Daniel Charles Consulting Limited | Administrative & support | 2024 |
| Daniel FEO Ltd | Transport & logistics | 2015 |
| Daniel Hairdressing Limited | Other services | 2013 |
| Daniel RO Ltd | Transport & logistics | 2019 |
| Daniel Watts Limited | Manufacturing | 2018 |
| Daniel Wilson Hairdressing Ltd | Other services | 2015 |
| Daniela S Clean Ltd | Administrative & support | 2024 |
| Daniela's Craft Ltd | Arts & recreation | 2022 |
| Danielle Beuker Marketing Ltd | Information & communication | 2025 |
| Danielle Rose Academy of Excellence Ltd | Education | 2020 |
| Danielle Rose Aesthetics Limited | Other services | 2022 |
| Daniels of Newhaven Ltd | Hospitality | 2019 |
| Daniilcorp Ltd | Administrative & support | 2026 |
| Danni Marie Designs Ltd | Households | 2022 |
| Dannielle Alicia Consultants Ltd | Real estate | 2025 |
| Dans Desserts NO1 Ltd | Hospitality | 2025 |
| Dansach Electrical Supplies Ltd | Wholesale & retail | 2000 |
| Danson Electrical Limited | Professional & scientific | 2014 |
| Danson Electrical UK Limited | Wholesale & retail | 2015 |
| Danston Holding Company Limited | Financial services | 2020 |
| Danston Ltd | Manufacturing | 2008 |
| Dant Living Ltd | Real estate | 2026 |
| Danton Building Ltd | Construction | 2023 |
| Danube RO Ltd | Transport & logistics | 2019 |
| Danvers + Hartshorn Architecture Limited | Professional & scientific | 2024 |
| Danyo-Kovacs Ltd | Health & social care | 2018 |
| DAP Trans Limited | Transport & logistics | 2016 |
| Dapetran Ltd | Transport & logistics | 2021 |
| DAR Alaman General Projects UK Limited | Construction | 2022 |
| DAR Transport Ltd | Transport & logistics | 2024 |
| Darapos Limited | Health & social care | 2013 |
| Darcee Ltd | Wholesale & retail | 2025 |