| Dorset Motorhomes Limited | Wholesale & retail | 2018 |
| Dorset Pet Cremations Ltd | Other services | 2023 |
| Dorset Prestige Developments Limited | Construction | 2024 |
| Dorset Towbars (Cars, Vans and Motorhomes) Ltd | Wholesale & retail | 2026 |
| Dorset Treasures Ltd | Wholesale & retail | 2020 |
| Dorset Tree Surgeons Ltd | Administrative & support | 2014 |
| Dorset Vehicle Sales Limited | Wholesale & retail | 2024 |
| Dorset Water Softeners Limited | Professional & scientific | 2014 |
| Dorset Window Cleaning Ltd. | Administrative & support | 2016 |
| DPK Dorset Ltd | Construction | 2014 |
| DSB Motor Group Limited | Wholesale & retail | 2025 |
| DSF Law and Mediation Limited | Professional & scientific | 2013 |
| DT Education Limited | Education | 2025 |
| DT Franchising Limited | Education | 2018 |
| DT Pro Nails & Beauty Ltd | Other services | 2024 |
| Dudsbury Manor House RTM Company Ltd | Households | 2020 |
| DW Media & Marketing Ltd | Professional & scientific | 2020 |
| Eagle EYE Bookkeeping Solutions Limited | Professional & scientific | 2017 |
| Easier BLS Ltd | Construction | 2022 |
| Easy Brick LP | | 2022 |
| Easyvent Ltd | Construction | 2001 |
| Eazy Garden Limited | Administrative & support | 2013 |
| Eco Heat Wilts Ltd | Construction | 2015 |
| Eco Home Group Ltd | Construction | 2015 |
| Edens Landscapes Limited | Administrative & support | 2000 |
| Edward Appleby Limited | Hospitality | 2025 |
| Ehrhart Enterprises Limited | Professional & scientific | 2014 |
| EJR Solutions Limited | Information & communication | 2026 |
| EKM Management Limited | Administrative & support | 2014 |
| Elective Health Ltd | Financial services | 2025 |
| Electratec South Ltd | Construction | 2016 |
| Elfin Drive Residents Association Limited | Administrative & support | 1993 |
| Elias Law Limited | Professional & scientific | 2015 |
| Elite Care DRY Cleaners Limited | Other services | 2024 |
| Elite Electrical Solutions South Ltd | Construction | 2023 |
| Elite Employment (Dorset) Ltd | Administrative & support | 2018 |
| Elite Property (Dorset) Limited | Real estate | 2024 |
| ELK Beauty Products Ltd | Wholesale & retail | 2025 |
| ELK Hair, Beauty & Spa Ltd | Other services | 2022 |
| ELK Nail Hair & Beauty Ltd | Other services | 2019 |
| Elmline Support Services Ltd | Administrative & support | 2026 |
| ELOV8 Competitions Limited | Arts & recreation | 2025 |
| Elson Geaves Accountants Limited | Professional & scientific | 2009 |
| Emara Social Ltd | Information & communication | 2025 |
| EMC4 Limited | Construction | 2020 |
| Emco Consulting Limited | Transport & logistics | 2002 |
| Emergency Plant Hire Ltd | Other services | 2019 |
| EMG Water-Tech Services Ltd | Water & waste | 2018 |
| Emme Safety Nets Retro Surf Limited | Construction | 2019 |
| Emporio & Partners Ltd | Administrative & support | 2022 |
| Emporio UK Limited | Information & communication | 2006 |
| Empower Electrical Limited | Construction | 2005 |
| Empower Innovations Limited | Professional & scientific | 2012 |
| EN Decision Ltd | Professional & scientific | 2010 |
| Ertrad Limited | Wholesale & retail | 2014 |
| Essential Rental Ltd | Real estate | 2018 |
| Estate Renew Co Ltd | Professional & scientific | 2024 |
| ET AL Interiors Ltd | Construction | 2023 |
| Eureka London Limited | Wholesale & retail | 2015 |
| Euro Mini Market Ferndown Ltd | Wholesale & retail | 2025 |
| Eurofabs Limited | Administrative & support | 2010 |
| European Care Training Academy Limited | Education | 2015 |
| Europebbletec Ltd | Professional & scientific | 2013 |
| Evan Deko Ltd | Wholesale & retail | 2014 |
| Events & Co Hospitality Group Limited | Hospitality | 2026 |
| Evercare AI Limited | Health & social care | 2024 |
| Everton Nurseries,Limited | Wholesale & retail | 1952 |
| Evoh Limited | Wholesale & retail | 2026 |
| Evolution Golf Management Limited | Professional & scientific | 2021 |
| Evolution Ventures Ltd | Hospitality | 2019 |
| EVY (Dorset) Limited | Hospitality | 2026 |
| Excel Energy Ltd | Energy | 2022 |
| Excel Provision Ltd | Education | 2026 |
| Executive Garden Rooms Limited | Construction | 2009 |
| F & DJ Electrical Services Limited | Construction | 2019 |
| F.J. Saxon Ltd | Arts & recreation | 2019 |
| F8 Solutions Ltd | Manufacturing | 2004 |
| Fairway Cruises Ltd | Professional & scientific | 2021 |
| Famil-Ease Limited | Information & communication | 2017 |
| Farrington Consulting Limited | Financial services | 2008 |
| Ferndown Aesthetics Limited | Health & social care | 2023 |
| Ferndown Barbers Limited | Other services | 2016 |
| Ferndown Community Support CIC | Health & social care | 2021 |
| Ferndown Finishing Limited | Manufacturing | 2000 |
| Ferndown Fish and Chips Ltd | Hospitality | 2020 |
| Ferndown Fitness Ltd | Arts & recreation | 2018 |
| Ferndown Florist Limited | Wholesale & retail | 2016 |
| Ferndown Forest Golf Course Limited | Arts & recreation | 2011 |
| Ferndown Forest Golf Shop Ltd | Wholesale & retail | 2005 |
| Ferndown GC Hospitality Ltd | Hospitality | 2025 |
| Ferndown Nails Limited | Other services | 2023 |
| Ferndown Pre-School Ltd | Education | 2015 |
| Ferndown Residential Limited | Real estate | 2021 |
| Fernlea Securities Limited | Administrative & support | 1963 |
| Ferns Family Investments Unlimited | Financial services | 2017 |
| Ferns Investments Limited | Financial services | 2016 |
| Fetlocks Housing Limited | Health & social care | 2011 |
| FGI United Kingdom Ltd | Wholesale & retail | 2021 |
| Financial Adviser Bournemouth Limited | Financial services | 2014 |
| Financial Adviser Dorset Limited | Financial services | 2020 |