| DR SJD Consulting Limited | Health & social care | 2023 |
| Dragan Interiors Limited | Construction | 2021 |
| Dragon Inns and Restaurants Limited | Professional & scientific | 1988 |
| Dragon Worldwide Limited | Wholesale & retail | 2007 |
| Drainflow Limited | Construction | 1998 |
| Draper Investments Ltd | Real estate | 2021 |
| Drax Lighting (Dunstable) Ltd | Other services | 2020 |
| DRE Paints Ltd | Construction | 2023 |
| Dream Homes Estate Limited | Real estate | 2015 |
| Dream.Raya Ltd | Hospitality | 2026 |
| Driozi Ltd | Administrative & support | 2021 |
| Drive by Beauty Ltd | Other services | 2025 |
| Drive Higher UK Ltd | Transport & logistics | 2022 |
| Drive Sphere Ltd | Wholesale & retail | 2026 |
| Drivecredit UP Ltd | Administrative & support | 2024 |
| Drivelab Cars Ltd | Wholesale & retail | 2025 |
| Driving Team Ltd | Transport & logistics | 2023 |
| Drivndrop Ltd | Administrative & support | 2025 |
| DRJ Site & Surveying Services Ltd | Construction | 2026 |
| Drofdarr Ltd | Professional & scientific | 2021 |
| Drst Trading Ltd | Manufacturing | 2024 |
| DRW City Limited | Hospitality | 2018 |
| Dryope Ltd | Wholesale & retail | 2025 |
| Drywall Contracts London Limited | Construction | 2017 |
| DS K9 Services Ltd | Administrative & support | 2025 |
| DSC Snooker Ltd | Arts & recreation | 2018 |
| DSG Build Limited | Construction | 2021 |
| DSG Parts & Repairs Ltd | Wholesale & retail | 2025 |
| DSG Railways Ltd | Construction | 2025 |
| DSG Repairs Ltd | Wholesale & retail | 2025 |
| DSL Food & Wine Ltd | Wholesale & retail | 2025 |
| DSN Property Investments Limited | Real estate | 2023 |
| DSV Builders Limited | Construction | 2019 |
| DTN 19 Ltd | Hospitality | 2019 |
| Dtpc Ltd | Hospitality | 2016 |
| Dtsnapstock Ltd | Wholesale & retail | 2025 |
| Dual FIX Ltd | Manufacturing | 2021 |
| Dubetta Ltd | Professional & scientific | 2023 |
| Duelnet Ltd | Wholesale & retail | 2024 |
| Dulceanu Ltd | Wholesale & retail | 2021 |
| Dumaac Projects UK Ltd | Information & communication | 2025 |
| Dumfairs Limited | Hospitality | 2020 |
| Duncan Associates (UK) Limited | Real estate | 2003 |
| Dunham Mews (Old Hatfield) Management Company Limited | Households | 2010 |
| Dunnell Enterprises Ltd | Education | 2025 |
| Dunstable and District Citizens Advice Bureau | Health & social care | 2005 |
| Dunstable Building Company Limited | Construction | 2003 |
| Dunstable Chicken Ltd | Hospitality | 2022 |
| Dunstable Conference Centre Limited | Administrative & support | 2017 |
| Dunstable Enterprise and Digital Hub Limited | Administrative & support | 2025 |
| Dunstable Executive Cars Ltd | Transport & logistics | 2020 |
| Dunstable Flooring & Kitchens Ltd | Construction | 2009 |
| Dunstable Foods Station Ltd | Hospitality | 2025 |
| Dunstable International Limited | Wholesale & retail | 2025 |
| Dunstable Learning Centre Ltd | Education | 2017 |
| Dunstable Local Grocery Ltd | Wholesale & retail | 2025 |
| Dunstable Parts Centre Limited | Wholesale & retail | 2024 |
| Dunstable Solar Ltd | Other services | 2026 |
| Dunstable Town Bowls Club Limited | Arts & recreation | 2022 |
| Dunstable Training & Tuition Limited | Education | 2017 |
| Dunstrans Ltd | Transport & logistics | 2025 |
| Dunya Mini Market Ltd | Wholesale & retail | 2022 |
| Durrant & SON Carpentry and Locks Ltd | Manufacturing | 2021 |
| Dvemma Limited | Other services | 2016 |
| Dwastransport Limited | Construction | 2017 |
| DWB Property Solutions Ltd | Construction | 2024 |
| DWP Imaging Limited | Professional & scientific | 2003 |
| Dycre Ltd | Other services | 2023 |
| Dylan Investco Limited | Financial services | 2016 |
| Dynsty Limited | Administrative & support | 2020 |
| DZ Renovations Ltd | Construction | 2021 |
| E & J Logistics Ltd | Transport & logistics | 2017 |
| E a Meenan Trading Ltd | Wholesale & retail | 2025 |
| E and a Farms Ltd | Financial services | 2025 |
| E E Legal Services Limited | Professional & scientific | 2010 |
| E Gold Ltd | Wholesale & retail | 2026 |
| E LEE IT Solutions Limited | Information & communication | 2010 |
| E My Bike Limited | Wholesale & retail | 2021 |
| E R Valet Limited | Administrative & support | 2023 |
| E W Wallace & Co Limited | Professional & scientific | 2003 |
| E&L ALL Logistics Ltd | Transport & logistics | 2025 |
| E&L Logistic Truetransport Ltd | Transport & logistics | 2024 |
| E&M Fashion Limited | Wholesale & retail | 2018 |
| E&R Roofing Ltd | Construction | 2025 |
| E-Hail Cars Ltd | Transport & logistics | 2026 |
| E.M. Chamberlain Estates Limited | Real estate | 1973 |
| E.M. Chamberlain Group Limited | Real estate | 1972 |
| E.M.Chamberlain Limited | Real estate | 1957 |
| E.V.A. Electrical Limited | Energy | 2006 |
| E11EVEN Consulting Ltd | Education | 2021 |
| EAC Group Ltd | Construction | 2020 |
| Eagle Centre Management Company Limited | Real estate | 1996 |
| Earthbound Services Limited | Professional & scientific | 2020 |
| East Anglia Estates Limited | Real estate | 1981 |
| East Anglia Motors Group Limited | Wholesale & retail | 2024 |
| East West Holdings Limited | Construction | 2017 |
| East West Services London Limited | Professional & scientific | 2017 |
| Eastern Employment Services Limited | Administrative & support | 1994 |
| Easy Foodie Ltd | Hospitality | 2022 |
| Eatery & Treatery Limited | Wholesale & retail | 2004 |