| Dorset Golf Club Broadstone Limited(The) | Arts & recreation | 1951 |
| Dorset Nursing Supplies Limited | Wholesale & retail | 2002 |
| Dorset Reclaim | Wholesale & retail | 1999 |
| Dorset Software Limited | Information & communication | 2002 |
| Dorset Software Services Limited | Information & communication | 1987 |
| Dorset Surveyors Ltd | Professional & scientific | 2006 |
| Dorsetshire Limited | Agriculture & fishing | 2003 |
| Doruk Beauty Ltd | Wholesale & retail | 2025 |
| Douglas Avenue RTM Company Limited | Extraterritorial | 2007 |
| DPL Ventilation Ltd | Manufacturing | 2006 |
| DR Mano Limited | Wholesale & retail | 2025 |
| Drain & Plumbing Solutions Ltd | Construction | 2007 |
| Drake Company International Limited | Wholesale & retail | 2006 |
| Drapes & Blinds Limited | Manufacturing | 2007 |
| Drummond Locomotives Limited | Manufacturing | 1998 |
| Drummonds Driveways LLP | | 2006 |
| Dsvp Ltd | Professional & scientific | 2021 |
| Dumpton School | Education | 1968 |
| Dunhugh Park Homes Limited | Real estate | 2002 |
| Durable (UK) Limited | Wholesale & retail | 1983 |
| Durweston Mill Water Limited | Energy | 2005 |
| Dutystone Limited | | 1987 |
| E a Brown Properties Limited | Real estate | 2005 |
| E B Motors Limited | Wholesale & retail | 2004 |
| E-Counting Services Ltd | Professional & scientific | 2005 |
| E.Bailey & Sons(Beaminster)Limited | Construction | 1951 |
| E.G. Westcott and SON (Motor and Marine) Limited | | 1973 |
| E.O.J. Group Ltd | Wholesale & retail | 2024 |
| Eagle Hurst Westbourne Investment Company Limited(The) | Households | 1959 |
| Earls Court (Bournemouth) Freehold Limited | Households | 2006 |
| Earner Information Systems Limited | Information & communication | 1999 |
| Eaton Mews (Ferndown) Management Co. Ltd. | Real estate | 2001 |
| Ebenezer Emergency Fund International | Professional & scientific | 2000 |
| Eco Home Group (EOT) Ltd | Financial services | 2025 |
| Eden Lodge Management Company Limited | Households | 1988 |
| Educational Training Centre (UK) Limited | Education | 1990 |
| Edward Friel & Co Limited | Information & communication | 1998 |
| Efdl Limited | Real estate | 2001 |
| Eli&Lori Ltd | Information & communication | 2020 |
| Elite Property Search Ltd | Real estate | 2007 |
| Elka Properties Ltd | Real estate | 2024 |
| Ellerslie Chambers Management Limited | Households | 1995 |
| Elysian Minds Ltd | Education | 2025 |
| Emeritus Solutions Limited | Professional & scientific | 2004 |
| Enesoft Limited | Information & communication | 2002 |
| Engineering Equipment Centre Limited | Professional & scientific | 2000 |
| Enhancing Learning Ltd | Education | 2003 |
| Enigmus Limited | Professional & scientific | 2005 |
| Equity Track Limited | Real estate | 2007 |
| Erica Drive (Management) Company Limited | Real estate | 1998 |
| Erozz Ltd | Wholesale & retail | 2025 |
| Erth Group Ltd | Wholesale & retail | 2021 |
| Essanjay Limited | Wholesale & retail | 2002 |
| Ethos Media Limited | Professional & scientific | 2003 |
| Eurac Limited | Professional & scientific | 1992 |
| Eurac Poole Limited | Manufacturing | 1992 |
| Eurosoft (UK) Limited | Information & communication | 1980 |
| Eurovalue Limited | Information & communication | 1995 |
| Evening Glade (Management) Limited | Households | 1988 |
| Everything Outdoor Limited | Wholesale & retail | 2012 |
| Evolution Financial Management Limited | Financial services | 2003 |
| Excalibur Moving Co Limited | Transport & logistics | 2003 |
| Exertherm Limited | Wholesale & retail | 1987 |
| Exeter Park Mansions Management (Bournemouth) Limited | Households | 1987 |
| Expert Hips Limited | Professional & scientific | 1993 |
| EXWES8 Limited | Construction | 2005 |
| Eyre Limited | Health & social care | 1997 |
| F J Loosemore Limited | Professional & scientific | 2003 |
| F P Whiffen Limited | Health & social care | 2004 |
| F.C.Bailey (UK) Ltd | Wholesale & retail | 2003 |
| Fabrication 2000 Limited | Professional & scientific | 1998 |
| Facts Limited | Transport & logistics | 1993 |
| Fairhome Limited | Construction | 1962 |
| Fairmile Court Management Limited | Households | 1978 |
| Fairways Property Management Limited | Real estate | 2012 |
| FAR & Wide Travel Limited | Transport & logistics | 1986 |
| Farrow & Ball Holdings Limited | Professional & scientific | 1999 |
| Farrow & Ball Limited | Manufacturing | 1971 |
| FAT HEN Properties Ltd | Construction | 2000 |
| Fellowship of Meditation(The) | Other services | 1952 |
| Fencewize Ltd | Construction | 2003 |
| Fern Garden Tree Services Limited | Administrative & support | 2020 |
| Fernbank (Management) Limited | Real estate | 1958 |
| Ferngas Limited | Construction | 2003 |
| Ferral & Co Limited | Real estate | 2018 |
| Festoon Limited | | 1972 |
| FFF Management Limited | Real estate | 2002 |
| Finding Films Ltd | Information & communication | 2023 |
| Findlay Steele Associates Limited | Information & communication | 1994 |
| Finite Ltd. | Professional & scientific | 1999 |
| Fireworks Solutions Limited | Arts & recreation | 2007 |
| First Formwork Limited | Wholesale & retail | 2004 |
| Five Square Motors Limited | Wholesale & retail | 1965 |
| Flaghead Management Limited | Households | 1998 |
| Flameport Enterprises Limited | Construction | 2004 |
| Fleetsbridge Business Centre Management Limited | Real estate | 1988 |
| Flight Refuelling Limited | Professional & scientific | 1936 |
| Floris Court Freehold Limited | Households | 2006 |
| Fmlh (Holdco) Ltd | Financial services | 2019 |
| Fmlh (Propco) Limited | Real estate | 2023 |