| Datel Fusion Limited | Information & communication | 2026 |
| Datel Group Limited | Information & communication | 1989 |
| Datel Protex Systems Limited | Information & communication | 1994 |
| Daten Football Academy CIC | Arts & recreation | 2023 |
| Daubrenet Consulting Ltd | Professional & scientific | 2018 |
| Daval Consulting Ltd | Professional & scientific | 2024 |
| Davanhol Cafes Ltd | Hospitality | 2025 |
| Dave Barker Engineering Limited | Administrative & support | 2016 |
| Dave Cook Marine Engineering Limited | Administrative & support | 2012 |
| Dave Earnden Coaching Limited | Arts & recreation | 2013 |
| Dave Packwood Consultancy Limited | Professional & scientific | 2010 |
| Dave's Civils & Groundworks Ltd | Construction | 2026 |
| Davenport Housing Limited | Real estate | 2021 |
| David Antrobus Marketing Ltd | Professional & scientific | 2000 |
| David Backhouse Limited | Construction | 2016 |
| David Bamber Consulting Ltd | Administrative & support | 2008 |
| David Dancy Digital Design Limited | Professional & scientific | 2014 |
| David Eyre Controls Limited | Administrative & support | 2016 |
| David French Site Services Limited | Construction | 2026 |
| David J Platt Landscapes Limited | Administrative & support | 1999 |
| David John James Ltd | Health & social care | 2014 |
| David Johnson Engineering Services Limited | Professional & scientific | 2022 |
| David Lloyd Project Management Services Limited | Administrative & support | 2014 |
| David Meldrum Subsea Services Ltd | Professional & scientific | 2019 |
| David Oliver Building Limited | Construction | 2015 |
| David P Wilson Limited | Information & communication | 2011 |
| David Parker Controls Ltd | Administrative & support | 2022 |
| David Parry Consulting Services Limited | Agriculture & fishing | 2014 |
| David Paul of Warrington Limited | Wholesale & retail | 2003 |
| David ROG Neurology Consulting Limited | Other services | 2019 |
| David Rosemond Ltd | Manufacturing | 2016 |
| David Roundell Services Limited | Wholesale & retail | 2013 |
| David Sloan GAS Ltd | Construction | 2026 |
| David Stanway & Associates Ltd | Professional & scientific | 2014 |
| David Taylor Partnerships Limited | Construction | 2001 |
| Davidrodermantherapy Limited | Health & social care | 2018 |
| Davies & Co. Property Services Ltd | Administrative & support | 2025 |
| Davies GB Consulting Limited | Professional & scientific | 2023 |
| Davis Asset Group Ltd | Real estate | 2025 |
| Davis Capital Management Ltd | Administrative & support | 2022 |
| Davisbrook Holdings Ltd | Financial services | 2021 |
| Davisbrook Limited | Real estate | 2004 |
| Davisbrook Residential Limited | Real estate | 2020 |
| Davloe Ventures Ltd | Professional & scientific | 2026 |
| Davra Limited | Professional & scientific | 2005 |
| Dawebb Holdings Ltd | Wholesale & retail | 2020 |
| Dawn Stewart Ltd | Other services | 2024 |
| Dawsella Limited | Arts & recreation | 2024 |
| Dawson Tech UK Limited | Administrative & support | 2020 |
| Dawstone Consultancy Limited | Administrative & support | 2015 |
| Daxamco Limited | Administrative & support | 2016 |
| Day Commercial Consultancy Ltd | Professional & scientific | 2017 |
| Day One Creative Limited | Information & communication | 2023 |
| Daye Global Services Limited | Wholesale & retail | 2014 |
| Dayfix Construction Ltd | Construction | 2021 |
| Dayma Supplies Limited | Manufacturing | 1999 |
| Dayou Property Ltd | Real estate | 2025 |
| Daytordrome Ltd | Administrative & support | 2022 |
| DB Autotech Limited | Wholesale & retail | 2023 |
| DB Design Draughting Limited | Administrative & support | 2014 |
| DB Electronic Design Solutions Ltd | Professional & scientific | 2024 |
| DB Hospitality Ltd | Hospitality | 2023 |
| DB Lettings Ltd | Real estate | 2023 |
| DB Prestige Autos Ltd | Wholesale & retail | 2026 |
| DB Ries Ltd | Administrative & support | 2008 |
| DB Services Warrington Ltd | Transport & logistics | 2024 |
| DB Steel Fabrications Ltd | Manufacturing | 2010 |
| DBA Data Management Solutions Ltd | Information & communication | 2019 |
| DBD Group Holdings Limited | Professional & scientific | 2014 |
| DBD Limited | Professional & scientific | 1995 |
| Dbi-Endecon Limited | Professional & scientific | 2007 |
| DBL Associates Limited | Professional & scientific | 2021 |
| DBM Retail Consultancy Limited | Administrative & support | 2024 |
| DBP Services Ltd | Administrative & support | 2007 |
| DBR Connect Limited | Information & communication | 2016 |
| DBT Development Ltd | Information & communication | 2014 |
| DC Building Estimators Ltd | Professional & scientific | 2023 |
| DC Flex Consultancy Limited | Information & communication | 2014 |
| DC North East Ltd | Transport & logistics | 2025 |
| DC North West Group Ltd | Financial services | 2025 |
| DC North West Ltd. | Transport & logistics | 2016 |
| DC Properties (Warrington) Limited | Real estate | 2018 |
| DC Telecoms & Electrical Limited | Information & communication | 2009 |
| DC Truck Hire Ltd | Administrative & support | 2021 |
| DCA Mechanical Engineering Ltd | Professional & scientific | 2017 |
| DCA Solutions Ltd | Other services | 2020 |
| Dcad Engineering Services Ltd | Professional & scientific | 2026 |
| Dcbl Fire Solutions Limited | Public administration | 2025 |
| DCI Packaging Solutions Ltd | Professional & scientific | 2024 |
| DCI Property Solutions LLP | | 2025 |
| DCS Consulting Services Limited | Administrative & support | 2015 |
| Dcsp Properties Ltd | Real estate | 2024 |
| DCT Engineering Ltd | Administrative & support | 2025 |
| DD Motors North West Limited | Wholesale & retail | 2014 |
| Ddce Ltd | Other services | 2019 |
| Ddos Consultancy Limited | Information & communication | 2017 |
| Ddpit Ltd | Information & communication | 2016 |
| DDR Engineering Ltd | Administrative & support | 2014 |
| Ddsm Consultancy Limited | Administrative & support | 2014 |
| DDT Consulting Ltd | Administrative & support | 2023 |