| Tien South Limited | Real estate | 2023 |
| Timms Property Group Ltd | Real estate | 2025 |
| Tips Tops N TAN Limited | Other services | 2006 |
| Titanbuild Construction Limited | Construction | 2026 |
| Titanic Spring Water Ltd | Wholesale & retail | 2024 |
| TIW Europe Limited | Professional & scientific | 2023 |
| TJC Fire and Electrical Limited | Construction | 2019 |
| TK Property Partners Ltd | Extraterritorial | 2024 |
| Tlhc Ltd | Health & social care | 2021 |
| TMP Global Ltd | Wholesale & retail | 2025 |
| TMS Legal Ltd | Professional & scientific | 2016 |
| Todd Plumbing & Heating Ltd | Construction | 2015 |
| Toliva Consultants Limited | Wholesale & retail | 2012 |
| Tonka Consultancy Services Ltd | Information & communication | 2019 |
| Top CAB Ltd | Transport & logistics | 2019 |
| Top Dog Veterinary Services Limited | Professional & scientific | 2007 |
| Tordan Hills Ltd | Administrative & support | 2014 |
| Total Knee Care Limited | Health & social care | 2010 |
| Toucan Limited | Professional & scientific | 2019 |
| Toucan Professional Services Limited | Professional & scientific | 2012 |
| Towelling Totes Ltd | Wholesale & retail | 2026 |
| TP19 Limited | Real estate | 2023 |
| Tracenet Group Ltd | Professional & scientific | 2016 |
| Track Financial Planning Limited | Financial services | 2026 |
| Trailblaze Group Ltd | Information & communication | 2025 |
| Trailblaze IT Ltd | Information & communication | 2014 |
| Trelavour Land Limited | Construction | 2025 |
| Tricketts Plumbing Services Ltd | Construction | 2013 |
| Trimbella Limited | Wholesale & retail | 2021 |
| Trophē Ltd | Information & communication | 2026 |
| Trsdesigns Limited | Professional & scientific | 2012 |
| Trustmark Developments Ltd | Construction | 2025 |
| Tudor Rose Jewellery Limited | Professional & scientific | 2020 |
| Turbary Park Consultants Limited | Professional & scientific | 2012 |
| Turner Moon Property Ltd | Real estate | 2024 |
| Turtle Tots Dorset Limited | Education | 2015 |
| Twentyfour Developments Limited | Construction | 2004 |
| Twin Town Consultancy Limited | Professional & scientific | 2022 |
| TWK Group Ltd | Construction | 2019 |
| Two Ducks Accounting Ltd | Information & communication | 2023 |
| TZ Properties Ltd | Real estate | 2024 |
| Tzipora Property Management Ltd | Real estate | 2024 |
| UAO Limited | Manufacturing | 2025 |
| UK Cozy Homes Ltd | Construction | 2023 |
| UK Mermaids Ltd | Arts & recreation | 2015 |
| Ultimate Camper Sales Ltd | Wholesale & retail | 2018 |
| Ultimate Drive Championship Ltd | Arts & recreation | 2025 |
| Ultra Home Solutions Limited | Construction | 2025 |
| Ultraheat Plumbing and Heating Services Ltd | Construction | 2013 |
| Unit 9 Vintage Ltd | Wholesale & retail | 2023 |
| United Volunteers AID C.I.C. | Health & social care | 2023 |
| Universal Building Company South Ltd | Construction | 2019 |
| Universal Holdings South Ltd | Real estate | 2022 |
| Universal Lettings and Homes Company Ltd | Construction | 2026 |
| Unltd. Yachts Ltd | Professional & scientific | 2020 |
| Urban Health & Fitness Ltd | Arts & recreation | 2012 |
| Urban Project Services Limited | Professional & scientific | 2019 |
| V.J.H. Properties Limited | Real estate | 2018 |
| V.J.H. Transport Limited | Transport & logistics | 2000 |
| V.P. Lewis Groundworks Limited | Construction | 2005 |
| Vaishnavy Holding Ltd | Financial services | 2024 |
| Vaishnavy Ltd | Wholesale & retail | 2021 |
| Vamp Truck & BUS Wash Ltd | Wholesale & retail | 2010 |
| Vampgb Ltd | Administrative & support | 2020 |
| Vault of Legends Ltd | Wholesale & retail | 2025 |
| Ventures South Limited | Real estate | 2023 |
| Veritas Medical Aesthetics Limited | Health & social care | 2024 |
| Veritas Software Ltd | Information & communication | 2025 |
| Versatile Solutions Dorset Ltd | Construction | 2025 |
| Vickery Cleaning & Maintenance Limited | Administrative & support | 2012 |
| Victoria Mews Ferndown Limited | Real estate | 2009 |
| Victory Active Wear Ltd | Wholesale & retail | 2026 |
| Victory Supplements Ltd | Manufacturing | 2026 |
| Villa Monitor Ltd | Administrative & support | 2007 |
| Visa Work Accommodation UK Ltd | Hospitality | 2023 |
| Visionpoint Group Ltd | Administrative & support | 2015 |
| Visionpoint Technologies Limited | Administrative & support | 2007 |
| Vivid Computing Solutions Ltd | Information & communication | 2018 |
| VM247 UK Ltd | Hospitality | 2024 |
| W Hayward Barbers Ltd | Other services | 2025 |
| W Smith & Sons Limited | Other services | 2000 |
| W.D.Watson Site Management Ltd | Administrative & support | 2017 |
| WAD24/7 Ltd | Water & waste | 2025 |
| Watching UK Ltd | Administrative & support | 2007 |
| Waterside Views Freehold Limited | Households | 2014 |
| Wavam Properties Ltd | Construction | 2023 |
| Wedding Besos Ltd | Hospitality | 2024 |
| Welham Aeromarine Limited | Manufacturing | 2018 |
| Well Heeled (Ferndown) Limited | Other services | 2007 |
| Well Tempered Limited | Information & communication | 2014 |
| Wellworth Property Investments Limited | Real estate | 2019 |
| Wentworth Grange Ferndown Limited | Real estate | 2001 |
| Wessex Angling Limited | Wholesale & retail | 2013 |
| Wessex Team Limited | Other services | 1998 |
| Wessex Will Writers Limited | Administrative & support | 2017 |
| Wessex Windscreens Limited | Wholesale & retail | 2009 |
| West Edessa Limited | Hospitality | 2017 |
| West Moors Commercial Limited | Administrative & support | 2016 |
| West Parley Construction Limited | Construction | 2014 |
| West Pharmaservices Limited | Manufacturing | 2000 |