| Daika Limited | Education | 2023 |
| Dairy Connect Events Ltd | Real estate | 2023 |
| Dairy Connect Group Ltd | Professional & scientific | 2021 |
| Daisy May's (Harrogate) Limited | Wholesale & retail | 2010 |
| Dalby Estate Holdings Ltd | Financial services | 2024 |
| Dale Developments Group Limited | Construction | 2026 |
| Dale's Diet Limited | Hospitality | 2012 |
| Dales & Shires Ltd | Real estate | 2009 |
| Dales Bred Sheep Breeders Association Limited(The) | Other services | 1945 |
| Dales Consulting Limited | Other services | 2010 |
| Dales Delights Limited | Extraterritorial | 2015 |
| Dales Educational Psychology Ltd | Extraterritorial | 2025 |
| Dales Heating Limited | Construction | 2004 |
| Dales Office Supplies and Equipment Ltd. | Wholesale & retail | 1996 |
| Dalesauna Holdings Limited | Financial services | 2020 |
| Dalesauna Limited | Construction | 1968 |
| Daleside Animals CIC | Health & social care | 2025 |
| Daleside Renovations Ltd | Construction | 2013 |
| Dalesman Tractors Limited | Wholesale & retail | 2010 |
| Dalgleish Properties Ltd | Real estate | 2016 |
| Dalton Electrical Yorkshire Limited | Construction | 2011 |
| Dalton FM Limited | Extraterritorial | 2015 |
| Daltons (Drainage) Limited | Construction | 2000 |
| Dame Essence Ltd | Wholesale & retail | 2026 |
| Dance Educational Ltd | Arts & recreation | 2021 |
| Dandy Developments London Ltd | Construction | 2016 |
| Dandy Wellness Ltd | Wholesale & retail | 2021 |
| Daniel Express Logistics UK Ltd | Transport & logistics | 2026 |
| Daniel Higson Limited | Professional & scientific | 2016 |
| Daniel Thackray Windows & Doors Ltd | Construction | 2020 |
| Dan’S Deals (Harrogate) Limited | Wholesale & retail | 2024 |
| Dapc Ltd | Financial services | 2019 |
| DAR Alsaqi Ltd | Wholesale & retail | 2024 |
| DAR Mansour General Trading Ltd | Wholesale & retail | 2026 |
| Darklight Dotnet Limited | Information & communication | 2011 |
| Darley Facilities Limited | Administrative & support | 2005 |
| Darley Inns Limited | Hospitality | 2019 |
| Darley Properties Limited | Real estate | 2013 |
| Dartell Holdings Ltd | Real estate | 2025 |
| Data Genius Ltd | Professional & scientific | 2016 |
| Databud Ltd | Professional & scientific | 2013 |
| Datadisk Computing Limited | Information & communication | 1998 |
| Datatree Connexions Ltd. | Information & communication | 2000 |
| Date Ltd | Extraterritorial | 2012 |
| Dats Marketing Limited | Professional & scientific | 2017 |
| Dats Properties Limited | Real estate | 2017 |
| Dave Barham Consultancy Limited | Professional & scientific | 2011 |
| Dave Hinchcliffe Electrical Limited | Construction | 2003 |
| Dave Skinner Ltd | Information & communication | 2022 |
| David Cooke Consulting Limited | Professional & scientific | 2024 |
| David Croft Consulting Ltd | Professional & scientific | 2024 |
| David Elgey Services Limited | Wholesale & retail | 2005 |
| David H COX & SON Ltd | Extraterritorial | 2012 |
| David Holmes Properties Limited | Construction | 1988 |
| David Irvine Joinery Limited | Construction | 2022 |
| David Lawrence Deco Limited | Real estate | 2018 |
| David Love Limited | Wholesale & retail | 2006 |
| David Maddan Associates Limited | Professional & scientific | 2015 |
| David MAY (2012) Limited | Extraterritorial | 2012 |
| David R Bulmer Associates Limited | Financial services | 2014 |
| David Slater Associates Limited | Professional & scientific | 2020 |
| David Stanier Group Ltd | Information & communication | 2015 |
| David Wade Fine Art Limited | Wholesale & retail | 2002 |
| David Worley Film Services Ltd | Information & communication | 2015 |
| Davina Limited | Extraterritorial | 2020 |
| Davison Tree Care Limited | Administrative & support | 2023 |
| Davrae Limited | Professional & scientific | 2012 |
| Dawnflex Limited | Construction | 2018 |
| Day ASH Estate Limited | Agriculture & fishing | 2020 |
| Day ASH Properties Limited | Real estate | 2023 |
| Daytona Asset Finance Limited | Financial services | 2020 |
| Daytuner Performance Limited | Manufacturing | 2007 |
| DB Commercial Management Limited | Professional & scientific | 2024 |
| Dbbg Construction Ltd | Construction | 2025 |
| DBL Yorkshire Ltd | Construction | 2019 |
| DC Construction Harrogate Ltd | Construction | 2024 |
| DC Holdings (Amber Valley) Limited | Professional & scientific | 2003 |
| DC Holdings (Rotherham) Limited | Professional & scientific | 2006 |
| DC Holdings (Wolverhampton) Limited | Professional & scientific | 2004 |
| DC Projects (Amber Valley) Limited | Arts & recreation | 2003 |
| DC Projects (Rotherham) Limited | Arts & recreation | 2006 |
| DC Projects (Wolverhampton) Limited | Arts & recreation | 2004 |
| DC21 Mercury SPV Limited | Energy | 2012 |
| Dcab & Company | Real estate | 2016 |
| DCM Graphics Limited | Professional & scientific | 2012 |
| DE Mola Wealth Management Ltd | Financial services | 2014 |
| DE Polymers Ltd | Professional & scientific | 2011 |
| DE Vere 2 Limited | Hospitality | 1986 |
| DE Vere Cotswold Water Park Limited | Hospitality | 2000 |
| DE Vere Grand Connaught Rooms Limited | Real estate | 2009 |
| DE Vere Limited | Professional & scientific | 2007 |
| DE Vere Tortworth Court Limited | Hospitality | 1999 |
| DE Vere Venues Properties Limited | Professional & scientific | 2005 |
| DE Vere Wokefield Estate Limited | Hospitality | 2010 |
| DE Vere Wokefield Property Limited | Real estate | 2007 |
| DE Villiers Development Solutions Limited | Administrative & support | 2010 |
| DE VOS International Consultancy Ltd | Wholesale & retail | 2026 |
| De-Vere Medical Limited | Health & social care | 2023 |
| Dead Northern Limited | Arts & recreation | 2020 |
| Deadline Limited | Education | 2024 |