| Dane IT Limited | Information & communication | 2011 |
| Danebury Developments Limited | Real estate | 1987 |
| Danescroft Dental Practice Ltd | Health & social care | 2009 |
| Dangcorp Limited | Professional & scientific | 2014 |
| Daniel Edmondson Consultancy Limited | Professional & scientific | 2022 |
| Daniel Fenwick Joinery Limited | Construction | 2018 |
| Daniel Gath Properties Limited | Real estate | 2013 |
| Daniel Nichol Ltd | Wholesale & retail | 2009 |
| Daniel Warrington Property Rentals Ltd | Administrative & support | 2017 |
| Danielle Mason Beauty Ltd | Other services | 2024 |
| Danmat Hotels Scarborough Limited | Hospitality | 2003 |
| Dannie LEA (Micklegate) Limited | Other services | 2007 |
| Danny Connelly Cleaning Limited | Other services | 2007 |
| Dannymac Limited | Professional & scientific | 2017 |
| Dansar Property Services Ltd | Households | 2025 |
| Dante Holdings Limited | Real estate | 2020 |
| Dante Vehicle Solutions Ltd | Wholesale & retail | 2023 |
| Danter Project Services Limited | Professional & scientific | 2018 |
| Dan’S PIE Company Ltd | Manufacturing | 2020 |
| DAP Haworth Limited | Agriculture & fishing | 2013 |
| Daps Project Management Limited | Professional & scientific | 2009 |
| Darc Distro Ltd | Wholesale & retail | 2025 |
| Darcy Rose Productions Limited | Arts & recreation | 2025 |
| Dare Analytic Limited | Information & communication | 2021 |
| Darien Financial Consulting Limited | Professional & scientific | 2014 |
| Dark Rift Horror Ltd | Information & communication | 2016 |
| Dark Rift Releasing Ltd | Information & communication | 2020 |
| Darkstar Enterprises Limited | Information & communication | 2014 |
| Darkstar International Limited | Manufacturing | 2013 |
| Darley and Company Ltd | Professional & scientific | 2011 |
| Darlow Limited | Information & communication | 2007 |
| Darren Booth Development Limited | Professional & scientific | 2017 |
| Darren Chandler Limited | Health & social care | 2010 |
| Darren Matthewson Properties Limited | Real estate | 2016 |
| Darryn Kerr Estates & Facilities Consultancy Services Ltd | Professional & scientific | 2023 |
| Dartstone Properties Limited | Administrative & support | 1988 |
| Darwin Partners Ltd | Financial services | 2019 |
| Dash Private Hire Ltd | Transport & logistics | 2022 |
| Datachart Limited | Administrative & support | 2011 |
| Datavard Ltd | Information & communication | 2010 |
| Datblygwyr Dorothea Limited | Extraterritorial | 1972 |
| Date Night Away Ltd | Wholesale & retail | 2021 |
| Dato Electrics Limited | Construction | 2022 |
| Dauntless Limited | Wholesale & retail | 2015 |
| Dauntless PR Ltd | Information & communication | 2021 |
| DAV Renovations Ltd | Construction | 2024 |
| Dave Bland Engineering Limited | Manufacturing | 2004 |
| Dave Delivers Limited | Transport & logistics | 2024 |
| Dave Fell Fitness Ebooks Ltd | Wholesale & retail | 2025 |
| Dave Foyer Engineering Ltd | Construction | 2022 |
| Dave RAX Ltd | Arts & recreation | 2022 |
| Dave Raymond Mobile Agricultural Engineers Limited | Manufacturing | 2012 |
| Dave Roberts & SON Limited | Construction | 2015 |
| Dave the Sweep Limited | Administrative & support | 2012 |
| Dave Whattam Limited | Wholesale & retail | 2003 |
| Davey Byrne Food Safety Limited | Public administration | 2025 |
| David Ashworth Limited | Professional & scientific | 2003 |
| David Banks Media Law Consultancy Ltd | Professional & scientific | 2013 |
| David Brant Limited | Professional & scientific | 2009 |
| David Chafer Acting Limited | Professional & scientific | 2013 |
| David Dale Removals Limited | Transport & logistics | 1998 |
| David Davies Pharma Consultants Ltd | Professional & scientific | 2015 |
| David Flower (York) Ltd | Other services | 2002 |
| David Frost Estate Agents Limited | Real estate | 1992 |
| David J Hyams Ltd | Professional & scientific | 2014 |
| David Knight Electrical Limited | Construction | 2019 |
| David Lewis Technical Services Ltd | Information & communication | 2023 |
| David O'Meara Bloodstock Ltd | Agriculture & fishing | 2015 |
| David O'Meara Limited | Arts & recreation | 2013 |
| David O'Meara Racing Ltd | Agriculture & fishing | 2009 |
| David Slater Limited | Extraterritorial | 2024 |
| David Swain Butchers Limited | Wholesale & retail | 2016 |
| David White Fireplaces Limited | Construction | 2015 |
| David Wilson Hairdressing Limited | Other services | 2008 |
| Davies Bros Limited | Extraterritorial | 2026 |
| Davies Brothers London Limited | Extraterritorial | 2026 |
| Davies Building Engineering Services Limited | Construction | 2017 |
| Davies Investment Homes Limited | Real estate | 2023 |
| Davies Project Solutions Ltd | Construction | 2016 |
| Davies Unix Service Ltd | Information & communication | 2013 |
| Davis Investments Ltd | Real estate | 2018 |
| Davis Tate Ltd | Professional & scientific | 2005 |
| Davis Training & Consultancy Ltd | Health & social care | 2004 |
| Davissa Limited | Financial services | 2004 |
| Davitt Security Solutions Ltd | Administrative & support | 2022 |
| DAW Logistics Ltd | Transport & logistics | 2008 |
| DAW Properties Ltd | Real estate | 2019 |
| DAW Storage Limited | Administrative & support | 2021 |
| Dawnblaid Limited | Professional & scientific | 1995 |
| Dawner Asset Finance LLP | | 2009 |
| Dawson Build Limited | Construction | 2007 |
| Dawson Classic Motorcycles Limited | Wholesale & retail | 2021 |
| Dawson Grain Services Ltd | Agriculture & fishing | 2025 |
| Daxin Building Ltd | Construction | 2021 |
| Days of Thunder Ltd | Manufacturing | 2020 |
| Days OUT Info Limited | Extraterritorial | 2024 |
| Dayton Audio Limited | Wholesale & retail | 2015 |
| Dayton Audio UK Limited | Wholesale & retail | 2015 |
| Dayuan Limited | Financial services | 2023 |
| Dayuan Retail Trading Limited | Wholesale & retail | 2022 |