| Datech Cabling Solutions Ltd | Information & communication | 2015 |
| Datum RPO Limited | Administrative & support | 2011 |
| Daudali Limited | Wholesale & retail | 2025 |
| Dave Amponsah Ltd | Health & social care | 2015 |
| Dave Cars Limited | Wholesale & retail | 2025 |
| Dave Clark Caravan Maintenance Services Ltd | Manufacturing | 2023 |
| Dave Holden Consultants Limited | Professional & scientific | 2024 |
| Dave Marriott Services Limited | Construction | 2004 |
| Dave Mott Installations Ltd | Wholesale & retail | 2006 |
| Dave Shaw LDN Ltd | Wholesale & retail | 2020 |
| Dave Watson International Limited | Other services | 1995 |
| Dave White Property Maintenance Ltd | Other services | 2021 |
| Davefem Global Investment Limited | Wholesale & retail | 2025 |
| Davenant Estates Limited | Real estate | 2016 |
| Davenport Project Management Limited | Professional & scientific | 2015 |
| Daventure Holdings Ltd | Real estate | 2018 |
| Davey Holdings Limited | Professional & scientific | 2007 |
| David a. Wilkinson Limited | Administrative & support | 2003 |
| David Alan Milner Limited | Financial services | 2020 |
| David Allen Brickwork Specialists Ltd | Construction | 2008 |
| David at Dani Construction Ltd | Construction | 2025 |
| David Berry Inc Ltd | Manufacturing | 2015 |
| David Blount Limited | Real estate | 2001 |
| David Bradley Plumbing & Heating Ltd | Construction | 2013 |
| David Bridge Limited | Extraterritorial | 2003 |
| David Burnell Financial Services Limited | Financial services | 2002 |
| David Burnell Wealth Management Limited | Financial services | 2019 |
| David Charles Maltby Ltd | Professional & scientific | 2026 |
| David Disney Limited | Real estate | 2010 |
| David Drew Garages Limited | Wholesale & retail | 1982 |
| David Ducker Associates Limited | Financial services | 2006 |
| David Edwards E C & I Technical Services Limited | Professional & scientific | 2008 |
| David Ezekiel Ltd | Transport & logistics | 2017 |
| David G Bell Limited | Health & social care | 2015 |
| David G G Kensington Limited | Real estate | 2019 |
| David G Thomas Ltd | Extraterritorial | 2024 |
| David George Consultancy Limited | Construction | 2020 |
| David Grey Partners Ltd | Professional & scientific | 2026 |
| David Hahn Orthopaedics Ltd | Health & social care | 2011 |
| David Hind Building Services Ltd | Construction | 2024 |
| David INS Consultants Limited | Financial services | 2018 |
| David Inzani Limited | Financial services | 2023 |
| David J Ward & SON Ltd | Transport & logistics | 2021 |
| David James Estate Agents Limited | Real estate | 2013 |
| David James Lettings Limited | Real estate | 2008 |
| David James Traffic Management Ltd | Other services | 2019 |
| David Jane Properties Ltd | Households | 2023 |
| David John Residentials Ltd | Real estate | 2020 |
| David Lake Medical Writing Ltd | Professional & scientific | 2025 |
| David Leigh Building Services Limited | Construction | 2013 |
| David Madruga Implants Limited | Health & social care | 2020 |
| David Marlow Limited | Construction | 2007 |
| David Mawby Limited | Manufacturing | 2004 |
| David Morris Brickwork Limited | Construction | 2019 |
| David Morris Developments Limited | Real estate | 2024 |
| David Oates Ltd | Information & communication | 2018 |
| David Pengelly Autocare Limited | Wholesale & retail | 2002 |
| David R Stevens Ltd | Transport & logistics | 2016 |
| David R Stewart Limited | Professional & scientific | 2018 |
| David Richards Jewellers Limited | Wholesale & retail | 2003 |
| David Rock Properties Limited | Real estate | 2021 |
| David Rollason Ltd. | Professional & scientific | 2021 |
| David Sanders Consulting Ltd | Professional & scientific | 2025 |
| David Scollick Services Limited | Professional & scientific | 2020 |
| David Sharp Studio Limited | Manufacturing | 2000 |
| David Silkstone Ltd | Wholesale & retail | 2016 |
| David Stokoe Limited | Construction | 2016 |
| David Total Cleaning Services Nottingham Ltd | Administrative & support | 2025 |
| David Walker Procurement Ltd | Professional & scientific | 2012 |
| David Wise Limited | Information & communication | 2014 |
| Davide Consulting Limited | Professional & scientific | 2010 |
| Davidson Analytical Services Limited | Health & social care | 2011 |
| Davies Control Systems Ltd | Manufacturing | 2026 |
| Davies M Property Ltd | Real estate | 2025 |
| Davies Property Solutions Limited | Real estate | 2017 |
| Davies Salvage Limited | Water & waste | 2011 |
| Davill Solar Limited | Real estate | 2024 |
| Davin Capital Holdings Limited | Financial services | 2018 |
| Davin Estates Limited | Real estate | 2022 |
| Davis & Co Property Lawyers Ltd. | Professional & scientific | 2018 |
| Davis Wilde Limited | Real estate | 2024 |
| Davishill Estates Ltd | Real estate | 2021 |
| Davison Bros (Boat Builders) Limited | Manufacturing | 1965 |
| Davy (Leeds) Limited | Construction | 2004 |
| DAW IT & Telecoms Consulting Ltd | Information & communication | 2015 |
| DAW MRL Consultancy Limited | Professional & scientific | 2018 |
| Dawd-Steel Ltd | Wholesale & retail | 2020 |
| Dawlish Warren Holidays Limited | Hospitality | 2023 |
| Dawn Christadelphian Publications | Information & communication | 2016 |
| Dawn Reeves Training and Consultancy Ltd | Professional & scientific | 2016 |
| Dawncleaningservices Limited | Other services | 2020 |
| Dawson Butler Limited | Professional & scientific | 2013 |
| Dawson Fields Management Company Limited | Financial services | 2023 |
| Dawson Technical Support Ltd | Other services | 2018 |
| Daxkat Limited | Professional & scientific | 2025 |
| Day - Night Pharmacy Limited | Wholesale & retail | 2006 |
| Day Blinds UK Ltd | Manufacturing | 2018 |
| Day-Dako Developments Ltd | Real estate | 2020 |
| Day-Night Derby Ltd | Real estate | 2014 |
| Day-Night Ellesmere Limited | Health & social care | 2015 |