| Dartford Rebore & Engine Centre Limited | Manufacturing | 2005 |
| Dartford Ribeye Steakhouse Ltd | Hospitality | 2023 |
| Dartford Roofing Services Ltd | Construction | 2024 |
| Dartford Rugby Limited | Arts & recreation | 2014 |
| Dartford Scaffolding Servies Limited | Construction | 2015 |
| Dartford Tandoori Ltd | Hospitality | 2022 |
| Dartford Tigers Ltd | Arts & recreation | 2025 |
| Dartford Transmissions & Autocare Limited | Wholesale & retail | 2017 |
| Dartford Tyre & Accessories Ltd. | Wholesale & retail | 1999 |
| Dartford Tyres (2000) Limited | Wholesale & retail | 2004 |
| Dartford Tyres Limited | Extraterritorial | 2011 |
| Dartford Wing Chun Ltd | Arts & recreation | 2025 |
| Dartford Yummy City Limited | Hospitality | 2025 |
| Dartomich Trade Ltd | Construction | 2024 |
| Dartun Services Ltd | Health & social care | 2024 |
| Dary&Mary-Trans Limited | Transport & logistics | 2025 |
| DAS Managemnent Limited | Construction | 2016 |
| Dash Thames Consulting Ltd | Professional & scientific | 2023 |
| Dashle Limited | Health & social care | 2022 |
| Data NET Consulting Ltd | Information & communication | 2025 |
| Data Quest Specialists Ltd | Information & communication | 2010 |
| Data Shredding Services Limited | Manufacturing | 1991 |
| Databyne Maven Limited | Professional & scientific | 2025 |
| Dataczar UK Ltd | Information & communication | 2025 |
| Datanerd Ltd | Information & communication | 2008 |
| Datareportive Ltd. | Information & communication | 2016 |
| Datasync Digital UK Ltd | Information & communication | 2024 |
| Datatech and IT Services Limited | Information & communication | 2009 |
| Dataworx Limited | Information & communication | 2016 |
| Datgirlhair Ltd | Other services | 2025 |
| Dats Global Limited | Construction | 2016 |
| Daul Properties Ltd | Real estate | 2017 |
| DAV Home Improvment Ltd | Construction | 2026 |
| Davianvi Limited | Real estate | 2022 |
| David Canning Ltd | Transport & logistics | 2012 |
| David Everington Consultancy Ltd | Financial services | 2018 |
| David Faulkes Ltd | Wholesale & retail | 2017 |
| David Howard Building Limited | Construction | 2019 |
| David James Interiors Ltd. | Construction | 2003 |
| David Mitchell Picture Frames Ltd. | Other services | 2014 |
| David NED Express Ltd | Transport & logistics | 2025 |
| David Norris Analytical Laboratories Limited | Professional & scientific | 2005 |
| Davies Hair Care Limited | Professional & scientific | 2020 |
| Davina Steel Limited | Manufacturing | 2019 |
| Davison Drainage Services Limited | Construction | 2022 |
| Davoye Ltd | Professional & scientific | 2022 |
| Dawood Shakeel Ltd | Wholesale & retail | 2020 |
| Dayo Residential Limited | Real estate | 2023 |
| Days Group Limited | Professional & scientific | 2023 |
| Daysol Property Limited | Real estate | 2022 |
| DB Auto Solutions Ltd | Wholesale & retail | 2015 |
| DB Healthcare Agency Limited | Administrative & support | 2019 |
| DB Management 2023 Ltd | Professional & scientific | 2023 |
| DB Safety Critical Services Limited | Professional & scientific | 2014 |
| DB Security Projects Ltd | Construction | 2021 |
| Db-Music Ltd | Arts & recreation | 2025 |
| Dbee Ltd | Construction | 2020 |
| DBK Television Limited | Information & communication | 2026 |
| DBS Homes (Kings Hill) Limited | Construction | 2006 |
| DBS Homes Limited | Construction | 2003 |
| DBT Property LLP | | 2008 |
| DC Consulting Solutions Ltd | Administrative & support | 2026 |
| DC Maintenance & Services Ltd | Other services | 2020 |
| DCI Gastro Ltd | Hospitality | 2025 |
| DCM Property Services Limited | Agriculture & fishing | 2014 |
| DCR Contractors Ltd | Construction | 2020 |
| Dcsk Limited | Education | 2022 |
| Dctstudios Ltd | Wholesale & retail | 2024 |
| DCZ Consultancy Ltd | Professional & scientific | 2020 |
| DD RAJ Ltd | Health & social care | 2025 |
| DDX Trans Ltd | Transport & logistics | 2024 |
| DE LA Mare Court RTM Company Limited | Households | 2015 |
| DE Light Full Properties Ltd | Hospitality | 2026 |
| DE Management Solutions Limited | Professional & scientific | 2016 |
| De'Falco Heating Ltd | Construction | 2016 |
| De-Aarons' Limited | Construction | 2013 |
| De-Gratitude Ltd | Construction | 2015 |
| De-Light Luxury UK Ltd | Wholesale & retail | 2024 |
| De-Machen Property Limited | Real estate | 2022 |
| De-Multimedia UK Ltd | Wholesale & retail | 2025 |
| Deacons Associates Limited | Administrative & support | 2001 |
| Deals Direct Commercial Ltd | Wholesale & retail | 2025 |
| Dean Cherry Properties Ltd | Real estate | 2026 |
| Deanudom Supplies Ltd | Construction | 2016 |
| Debdan Limited | Transport & logistics | 2025 |
| Deboe Studios Ltd | Wholesale & retail | 2022 |
| Debonair Lashes Ltd | Other services | 2026 |
| Debope Property Services Limited | Construction | 2021 |
| Deborah Sage Limited | Professional & scientific | 2017 |
| Deca Property Renovations Ltd | Construction | 2026 |
| Decebal Markets Limited | Wholesale & retail | 2025 |
| Decima Enterprises Ltd | Information & communication | 2018 |
| Decimal Facilities Management Limited | Administrative & support | 2022 |
| Decimal Healthcare Services Limited | Health & social care | 2018 |
| Decimo Building Services Engineering Limited | Construction | 2004 |
| Decimo Facilities Management Limited | Administrative & support | 2023 |
| Decimo Holdings Limited | Construction | 2020 |
| Decimo Project Engineering Limited | Construction | 2018 |
| Decius Holdings Ltd | Real estate | 2021 |
| Decodex Pro Limited | Information & communication | 2025 |