| Dark Bear Ltd | Hospitality | 2018 |
| Daru Solutions Ltd | Professional & scientific | 2017 |
| Dave Smith Plumbing & Heating Ltd | Construction | 2016 |
| David Kennard LLP | | 2011 |
| Davies & Smith Limited | Information & communication | 2012 |
| Davies Wealth Management Ltd. | Financial services | 2010 |
| Dean Engineering Limited | Manufacturing | 2008 |
| Deathrights CIC | Professional & scientific | 2025 |
| Denim Forum Limited | Information & communication | 2014 |
| Detail and Design Property Services Ltd | Construction | 2017 |
| Dezoglu Limited | Hospitality | 2023 |
| Digbys Juices Ltd | Manufacturing | 2014 |
| Digital Habitats Ltd | Information & communication | 2004 |
| DIP Store Limited | Wholesale & retail | 2025 |
| Dixon Holdings (Bridport) Ltd | Financial services | 2024 |
| DK Assemblies Limited | Manufacturing | 2004 |
| Dmca Builders Ltd | Construction | 2023 |
| Dmfg Limited | Professional & scientific | 2023 |
| Domain Manage Ltd | Information & communication | 2017 |
| Domestic Plumbing & Repairs Limited | Construction | 2013 |
| Donians Ltd | Hospitality | 2022 |
| Donovan Atyeo Limited | Professional & scientific | 2011 |
| Doodle Pictures Limited | Arts & recreation | 2015 |
| Doralord Limited | Households | 1983 |
| Dorset Antique Clocks Ltd | Wholesale & retail | 2016 |
| Dorset Country Hotel Limited | Hospitality | 2021 |
| Dorset Mobile Bars and Disco Ltd | Hospitality | 2024 |
| Dorset Nectar LLP | | 2016 |
| Dorset Pearl Holidays Ltd | Hospitality | 2024 |
| Dorset Spruce Ltd | Other services | 2021 |
| Dorset Visual Arts (Promotions) Limited | Arts & recreation | 2005 |
| Dorshi Ltd | Hospitality | 2012 |
| Down END Court Bridport Management Limited | Real estate | 1992 |
| Drafttogo Ltd | Wholesale & retail | 2020 |
| Dragonfly Life & Legacy Ltd | Administrative & support | 2026 |
| Drinxin Limited | Wholesale & retail | 2018 |
| Drive Dorset Ltd | Transport & logistics | 2023 |
| DSA Technologies Ltd | Manufacturing | 2022 |
| Dumpshock Games Ltd | Wholesale & retail | 2023 |
| Durnovaria Silver Band Trust | Arts & recreation | 2013 |
| Dyer's Plumbing & Heating Ltd | Construction | 2013 |
| E J Taylor & Sons (Bridport) Ltd | Construction | 2019 |
| E. R. Foot Holdings Limited | Hospitality | 2019 |
| E.J. Properties (Dorset) Ltd | Construction | 2002 |
| Earth & Table Limited | Wholesale & retail | 2025 |
| East Kitchen and Bar Ltd | Hospitality | 2021 |
| Edmonds Commercial Ltd | Real estate | 2014 |
| Eggardon CIC | Other services | 2024 |
| EJ & MT Ltd | Hospitality | 2019 |
| Elecampane Film Ltd | Information & communication | 2026 |
| Electric Backroom Ltd | Arts & recreation | 2002 |
| Electric Cellar Limited | Wholesale & retail | 2015 |
| Elements Catering Limited | Hospitality | 2019 |
| Elephant Moon Trading Ltd | Wholesale & retail | 2021 |
| Elevate Fit Coaching Ltd | Health & social care | 2022 |
| Elite Travel & Chauffeur Services Ltd | Transport & logistics | 2013 |
| Elliott Guest Holdings Ltd | Hospitality | 2022 |
| Ellward-Smith Electrical Services Limited | Construction | 2018 |
| Elmsbrook Developments Ltd | Construction | 2020 |
| Elwin Ltd | Wholesale & retail | 2025 |
| Emily Wellbeing Ltd | Health & social care | 2021 |
| Emma Still CS Ltd | Professional & scientific | 2024 |
| Emma's Home Support Ltd | Health & social care | 2025 |
| English American Limited | Wholesale & retail | 2005 |
| Enodo Consulting Limited | Information & communication | 2014 |
| Environmental Health Safety Ltd | Professional & scientific | 2018 |
| Epos Holdings Limited | Financial services | 2023 |
| Epsilon Computer Services Limited | Information & communication | 2008 |
| Esperance Jurassic Ltd | Real estate | 2023 |
| Essential Employment Law Services Limited | Professional & scientific | 2003 |
| Ethical Productions Ltd | Arts & recreation | 2025 |
| Eugene Crabb Plastering Contractors Limited | Construction | 2003 |
| Evolution Electrical (PV) Limited | Construction | 2023 |
| Evolved Tuning Ltd | Wholesale & retail | 2019 |
| EY Sculpture UK Limited | Other services | 2018 |
| Fabric Building Physics Ltd | Professional & scientific | 2014 |
| Farm to Food Ltd | Agriculture & fishing | 2024 |
| Fastlane Design Consultants Ltd | Professional & scientific | 2014 |
| Fastyres Ltd | Wholesale & retail | 2017 |
| Fawkes Electrical Ltd | Construction | 2025 |
| FB Homes Ltd | Construction | 2024 |
| Felicity's Farm Shops Limited | Wholesale & retail | 2010 |
| Ferrymoss Limited | Construction | 1984 |
| Finetec Precision Engineering Ltd | Professional & scientific | 2018 |
| Fingerprint Dance CIC | Education | 2019 |
| Fins-Up Limited | Transport & logistics | 2015 |
| Five Acres Residents Association Ltd | Households | 2023 |
| Flats 1-10 Priory Mill Management Company Limited | Households | 2007 |
| Flax Mill (Burton Bradstock) Management Company Limited | Households | 2007 |
| Flower Coast Ltd | Wholesale & retail | 2022 |
| Fnad Consulting Ltd | Professional & scientific | 2022 |
| Forager Spirit Limited | Wholesale & retail | 2021 |
| Fords Croft Holidays LLP | | 2017 |
| Forest and Tree Care Limited | Agriculture & fishing | 2006 |
| Forever Active Health & Wellbeing Ltd | Information & communication | 2016 |
| Fossil Coffee Co. Ltd | Manufacturing | 2025 |
| Franks CAD Design Limited | Professional & scientific | 2012 |
| Freshwater Beach LLP | | 2020 |
| Freshwater Holiday Park Limited | Hospitality | 2020 |
| Frome Valley Alarms and Electrical Limited | Construction | 2013 |