| Dante Housing Limited | Households | 2025 |
| Dante Industrial Services Ltd | Construction | 2005 |
| Dante South Ltd | Administrative & support | 1991 |
| Dantec Limited | Manufacturing | 2011 |
| Dantech UK Limited | Administrative & support | 2000 |
| Dantock Ltd | Wholesale & retail | 2012 |
| Dantom Merseyside Limited | Construction | 2008 |
| Danum Industrial Limited | Wholesale & retail | 1990 |
| Danuthena Consulting Ltd | Professional & scientific | 2025 |
| Danviceb Ltd | Construction | 2025 |
| DAP Catering Equipment Project Management Services Limited | Administrative & support | 2011 |
| Dapdune Trading Limited | Agriculture & fishing | 2014 |
| Dapper Turkish Barbers Ltd | Other services | 2019 |
| Dara Property Management Ltd | Real estate | 2019 |
| Daradona Limited | Real estate | 2007 |
| Darcie’S Dusters Ltd | Administrative & support | 2022 |
| Darcy Plumbing Ltd | Administrative & support | 2017 |
| Darcy Willow Interiors Ltd | Wholesale & retail | 2014 |
| Daria Transport Limited | Transport & logistics | 2025 |
| Darison Ltd | Real estate | 2023 |
| Darius Florin Transport Ltd | Transport & logistics | 2025 |
| Dariusz Gmiat Transport Ltd | Transport & logistics | 2018 |
| Dark Cherries Ltd | Arts & recreation | 2024 |
| Dark Harts Ltd | Wholesale & retail | 2023 |
| Dark Kitchen Hub Ltd | Hospitality | 2020 |
| Dark Lighthouse Ltd | Information & communication | 2024 |
| Dark Matter Cinema Ltd | Information & communication | 2019 |
| Dark Ocean Games Studios Ltd | Information & communication | 2023 |
| Dark Planet Resilience Ltd | Administrative & support | 2023 |
| Dark Side Cladding Ltd | Construction | 2025 |
| Dark Stash Limited | Manufacturing | 2024 |
| Darker Property Services Limited | Construction | 2012 |
| Darker Property Services North West Limited | Construction | 2015 |
| Darkhorse Design Holdings Limited | Financial services | 2023 |
| Darkhorse Design Limited | Professional & scientific | 2005 |
| Darkrain Construction Limited | Construction | 2024 |
| Darkrain Media Limited | Information & communication | 2024 |
| Darley Court Management Company Limited | Households | 1985 |
| Darlington Art Limited | Manufacturing | 2007 |
| Darmonds Project Management Limited | Administrative & support | 2016 |
| Darragh Developments Ltd | Construction | 2024 |
| Darren Bennett School of Motoring Limited | Education | 2018 |
| Darren Tyrer Hairdressing Limited | Other services | 2008 |
| Dartle UK Limited | Information & communication | 2023 |
| Dartswift Forwarding Ltd | Professional & scientific | 2008 |
| Dartswift International Limited | Transport & logistics | 1986 |
| Darwin Force Delivery Ltd | Transport & logistics | 2026 |
| Darwins Property Services Ltd | Real estate | 2026 |
| Darwish Tech Limited | Information & communication | 2026 |
| Daryl Stanley Developments Ltd | Real estate | 2025 |
| DAS Chanté Ltd | Wholesale & retail | 2024 |
| Dash & Drop Logistics Ltd | Transport & logistics | 2025 |
| Dash Empire Limited | Financial services | 2018 |
| Dashwhispers CIC | Information & communication | 2025 |
| Dasofant Merryowo Limited | Health & social care | 2023 |
| Dass Property Management Ltd | Real estate | 2023 |
| Data Active Management Limited | Information & communication | 2022 |
| Data Associates Limited | Information & communication | 1999 |
| Data for Places Limited | Information & communication | 2026 |
| Data Intelligence Holdings Limited | Financial services | 2023 |
| Data Law Limited | Education | 1998 |
| Data Loop Analytics Limited | Information & communication | 2025 |
| Data Management Consultants (North West) Ltd | Information & communication | 2016 |
| Data Market Solutions Limited | Professional & scientific | 2025 |
| Data People Connected Limited | Information & communication | 2009 |
| Data Platforms Ltd | Information & communication | 2022 |
| Data Safe Solutions Ltd | Administrative & support | 2019 |
| Data Valut AI Ltd | Information & communication | 2025 |
| Data-Driven Optimization Ltd | Professional & scientific | 2023 |
| Databax Limited | Information & communication | 2000 |
| Dataforce Network Solutions Ltd | Information & communication | 2019 |
| Datahaze Ltd | Information & communication | 2023 |
| Datasurg Ltd | Information & communication | 2025 |
| Datasyum Limited | Information & communication | 2025 |
| Datultacy Limited | Information & communication | 2016 |
| Datum Development Group Limited | Construction | 2024 |
| Daulat B Ltd | Health & social care | 2023 |
| DAV Yadav Ltd | Information & communication | 2025 |
| Davanste Solutions Ltd | Construction | 2024 |
| Dave Coleman Paving Limited | Construction | 2017 |
| Dave Coulter Properties Limited | Construction | 2008 |
| Dave Cowell Ltd | Arts & recreation | 2019 |
| Dave Jones Garages Ltd | Wholesale & retail | 2014 |
| Dave Mercer Coaching Limited | Arts & recreation | 2021 |
| Dave Richardson Consulting Limited | Professional & scientific | 2025 |
| Dave Verburg Enterprises Ltd | Administrative & support | 2025 |
| Davekay Ltd | Information & communication | 2020 |
| Davenham Developments Limited | Real estate | 2022 |
| Davespen Ltd | Transport & logistics | 2025 |
| Davey Hayes Ltd | Construction | 2019 |
| Davey's Healthcare Ltd | Health & social care | 2021 |
| Davey's Limited | Wholesale & retail | 1997 |
| Davics Construction Limited | Construction | 1997 |
| David & Joseph Parker Used Car & Van Sales Ltd | Wholesale & retail | 2018 |
| David Aitken Limited | Hospitality | 2003 |
| David and Betty Allen Trading Limited | Professional & scientific | 2023 |
| David and Elaine Nisbet Trading Limited | Professional & scientific | 2023 |
| David and James Property Letting Ltd | Real estate | 2017 |
| David Andersen Gardens Ltd | Professional & scientific | 2026 |
| David Anthony Properties Ltd | Real estate | 2025 |