| Technological Services Limited | Information & communication | 2018 |
| Tecman Limited | Real estate | 1989 |
| Telos Pathways LLP | | 2025 |
| Templehill Property Management Limited | Real estate | 2012 |
| Terry White Landscaping Limited | Construction | 2010 |
| TFS (Dorset) Limited | Construction | 2008 |
| TGB Oncology Limited | Health & social care | 2025 |
| Thai Nakorn Limited | Hospitality | 2011 |
| THE Accountancy Butler Limited | Professional & scientific | 2010 |
| THE Airborne Initiative Trust | Education | 2012 |
| THE Anchor at Shapwick 2006 Limited | Hospitality | 2006 |
| THE Ancient Trails Company Ltd | Agriculture & fishing | 2020 |
| THE Angel Inn Grosmont Limited | Hospitality | 2014 |
| THE Babysitting Collective Ltd | Health & social care | 2024 |
| THE Band Register Ltd | Arts & recreation | 2005 |
| THE Basement Bar Ltd | Extraterritorial | 2010 |
| THE Beeches (Tatnam) Management Limited | Professional & scientific | 2012 |
| THE Beehive Portland Ltd | Hospitality | 2022 |
| THE Beekeeper Limited | Wholesale & retail | 2024 |
| THE Big Christmas Tree Company LLP | | 2017 |
| THE Black Cat Agency Ltd | Professional & scientific | 2020 |
| THE BOB Willis Fund Limited | Professional & scientific | 2021 |
| THE Body Retreat Limited | Other services | 2013 |
| THE Bottling Plant Limited | Hospitality | 2019 |
| THE Brewery Square Development Company Limited | Real estate | 2010 |
| THE Bridge House (Bridport) Limited | Hospitality | 2017 |
| THE Bridport Literary Festival Limited | Administrative & support | 2012 |
| THE Brownsword Hall Charity | Real estate | 2000 |
| THE Business Hub on Poundbury Limited | Administrative & support | 2020 |
| THE CHI Zone Ltd | Education | 2015 |
| THE Chimney Keepers Limited | Administrative & support | 2014 |
| THE Cleaner Fish Company Limited | Agriculture & fishing | 2015 |
| THE Click Support Ltd | Information & communication | 2020 |
| THE Coach & Horses Management Company Limited | Households | 1998 |
| THE Coach House Trinity Lodge Ltd | Hospitality | 2024 |
| THE Commercial Law Practice Limited | Professional & scientific | 2006 |
| THE Company of Dead Brewers Limited | Manufacturing | 2015 |
| THE Compass Stone and Timber Company Ltd | Extraterritorial | 2024 |
| THE Concrete Flooring Company (Devon) Limited | Construction | 2010 |
| THE Copperstore Limited | Wholesale & retail | 2006 |
| THE Coppleridge Limited | Hospitality | 2025 |
| THE Cornfields Management Company Limited | Extraterritorial | 2005 |
| THE Cosmetic Clinic Poole Ltd | Other services | 2018 |
| THE Countryman (ST Ives) Limited | Hospitality | 2020 |
| THE Courtyard Clyffe House Management Company Limited | Real estate | 1989 |
| THE Cranford Village Management Company Limited | Households | 2003 |
| THE Curtain Cabin Limited | Manufacturing | 2017 |
| THE Custom Build Company (Developments) Ltd | Construction | 2018 |
| THE Dorchester Agricultural Society | Other services | 1997 |
| THE Dorchester Ballet and Dance Club | Arts & recreation | 2000 |
| THE Dorchester Physiotherapy & Sports Injury Clinic Ltd | Health & social care | 2010 |
| THE Dorset Chairman Limited | Administrative & support | 2017 |
| THE Dorset Collective Ltd | Education | 2025 |
| THE Dorset Courier Company Ltd | Transport & logistics | 2018 |
| THE Dorset Environmental Records Centre Trust Company Limited | Information & communication | 1989 |
| THE Dorset Fresh Fish Company Limited | Agriculture & fishing | 2018 |
| THE Dorset GIN Company Limited | Manufacturing | 2019 |
| THE Dorset Golf Academy Limited | Arts & recreation | 2002 |
| THE Dorset Golf and Country Club Limited | Arts & recreation | 1995 |
| THE Dorset Golf Hotel Limited | Arts & recreation | 2002 |
| THE Dorset Golf Resort Ltd. | Hospitality | 2002 |
| THE Dorset Natural History and Archaeological Society | Arts & recreation | 1997 |
| THE Dorset Resort Ltd. | Hospitality | 2002 |
| THE Dorset Shrieval Charitable Trust | Health & social care | 2012 |
| THE Dorset Wine Company Limited | Wholesale & retail | 2006 |
| THE Earth and Soul Soap Company Ltd | Manufacturing | 2026 |
| THE Fairways RTM Company Limited | Real estate | 2011 |
| THE Fantastic Sausage Factory (South West) Limited | Extraterritorial | 2001 |
| THE Fantastic Sausage Factory Limited | Wholesale & retail | 2001 |
| THE Flight Training UK Academy Limited | Education | 2024 |
| THE Flock Agency Ltd | Professional & scientific | 2023 |
| THE Florist of Poundbury Limited | Wholesale & retail | 2021 |
| THE Flower Social CIC | Agriculture & fishing | 2022 |
| THE FOX Ansty Ltd | Hospitality | 2019 |
| THE FOX Corscombe Ltd | Hospitality | 2023 |
| THE Future Kind Collective Ltd | Professional & scientific | 2021 |
| THE Gables Management (Dorchester) Company Limited | Households | 1989 |
| THE Gardens Dental Practice Limited | Health & social care | 2019 |
| THE Georgie Porgie PIE & Burger Co Ltd | Hospitality | 2018 |
| THE Good Life Cafe Bistro Ltd | Hospitality | 2024 |
| THE Goodridge Property Company Ltd | Real estate | 2022 |
| THE Granary Owners Management Company Limited | Administrative & support | 2017 |
| THE Great British CAB Company Ltd | Transport & logistics | 2019 |
| THE Hambledon Gallery (Dorset) Limited | Wholesale & retail | 2023 |
| THE Happy BUG Co. Ltd | Wholesale & retail | 2025 |
| THE Heart Chakra Project Limited | Extraterritorial | 2023 |
| THE Hive Chiropractic Limited | Health & social care | 2026 |
| THE Jedi Archives Ltd | Wholesale & retail | 2022 |
| THE King of Trades Limited | Construction | 2015 |
| THE Kosmos Group Limited | Information & communication | 2017 |
| THE Laminitis Site | Professional & scientific | 2013 |
| THE Landings (Crossways) Management Limited | Extraterritorial | 2019 |
| THE Landscape Practice Limited | Professional & scientific | 2004 |
| THE Lantern Trust (Weymouth) | Health & social care | 2005 |
| THE Larbert Partnership Limited | Professional & scientific | 2011 |
| THE Learning Huddle Limited | Professional & scientific | 2014 |
| THE Light Review Ltd | Other services | 2018 |
| THE Lily Housing Project Ltd | Health & social care | 2009 |
| THE Little HAT Shop Ltd | Wholesale & retail | 2025 |
| THE Loop Group Limited | Manufacturing | 2025 |