| Trackway Survey Limited | Construction | 2014 |
| Trinityfox Ltd | Administrative & support | 2021 |
| Trophy Group Limited | Professional & scientific | 2018 |
| Tropical Jamminz Entertainment Limited | Education | 2024 |
| Tudor Court (Yeovil) Management Limited | Households | 1989 |
| Tumbles Gymnastics Limited | Education | 2018 |
| Turkey Court Limited | Households | 1993 |
| Turnweld Engineering Limited | Manufacturing | 2014 |
| Turtle STN Ltd | Professional & scientific | 2019 |
| Tutorall Ltd | Education | 2024 |
| TWENTYSEVEN18 Limited | Administrative & support | 2025 |
| Tytherleigh Vehicle Electrics Limited | Wholesale & retail | 2022 |
| Uderma Ltd | Health & social care | 2022 |
| UK Locum Services Ltd | Professional & scientific | 2022 |
| Urban Fusion Designs Limited | Wholesale & retail | 2010 |
| Valori Enterprises Limited | Professional & scientific | 2010 |
| Value Stream Investments Ltd | Financial services | 2021 |
| Vancon Conversions Ltd | Manufacturing | 2021 |
| Vanguard Court Management Company Limited | Households | 1999 |
| Vardens Farm Holdco Limited | Financial services | 2026 |
| Vehicle Rental Holdings Limited | Administrative & support | 2007 |
| Velential Limited | Health & social care | 2025 |
| Velsheda Court Management Co Limited | Real estate | 2012 |
| Victoria Flats (Dorchester) Limited(The) | Households | 1983 |
| Victory Court (Winsham) Management Limited | Real estate | 2019 |
| Viridian City Trading Co. Ltd | Wholesale & retail | 2026 |
| Virtual Press Office Ltd | Professional & scientific | 2024 |
| Viva Business Group Limited | Extraterritorial | 2009 |
| Vivary Court Management Limited | Households | 1989 |
| Vivary Properties Limited | Real estate | 2025 |
| Walkeaze Limited | Information & communication | 2026 |
| Wanderers of the Wild CIC | Education | 2025 |
| Warner Vision Ltd | Administrative & support | 2017 |
| Watermead Stay Ltd | Hospitality | 2023 |
| Watershed PR & Marketing Limited | Professional & scientific | 2005 |
| Waverley Developments South West Limited | Construction | 2020 |
| Wbcomposites Limited | Manufacturing | 2023 |
| Wells Menopause Clinic Limited | Health & social care | 2019 |
| Wendy Mcneill Representation Ltd | Professional & scientific | 2017 |
| Wesley Medical Services Limited | Health & social care | 2026 |
| Wessex Eagle Holdings Limited | Administrative & support | 1994 |
| Wessex Eagle Limited | Administrative & support | 1981 |
| Wessex Eagle Trustees Limited | Other services | 2016 |
| Wessex House (West Quay) Management Company Limited | Real estate | 2016 |
| West Controls Ltd | Wholesale & retail | 2005 |
| West Country Helicopters Limited | Transport & logistics | 2005 |
| West Country Surveyors Limited | Professional & scientific | 2007 |
| Westcountry Waterjet Ltd | Manufacturing | 2014 |
| Westfield Cosmetic Services Limited | Health & social care | 2008 |
| Weyai Ltd | Information & communication | 2025 |
| Wheeler 2019 LP | | 2019 |
| White Cross Estates Limited | Households | 2005 |
| White-Martyn Services Limited | Health & social care | 2025 |
| Whites Fish Bar Ltd | Hospitality | 2024 |
| Whyte Property Limited | Real estate | 2017 |
| Wild Roots Studio 21 Limited | Other services | 2025 |
| Williams Self Drive Services Limited | Administrative & support | 1977 |
| Winchester House Taunton Residents Association Limited | Households | 1980 |
| WKD (Holdings) Limited | Hospitality | 2008 |
| WKD Properties Limited | Hospitality | 1999 |
| Wolf Windows Ltd | Construction | 2023 |
| Wood Laminate Express Ltd | Wholesale & retail | 2018 |
| Woodman Commercials Limited | Wholesale & retail | 2003 |
| Woodstock Freehold Management Limited | Real estate | 2013 |
| Woollams Place Residents Limited | Households | 2008 |
| Wootton Retail Limited | Wholesale & retail | 2025 |
| Workwear Pro Direct Limited | Wholesale & retail | 2021 |
| Worldwide Commercial Investments Limited | Real estate | 2020 |
| Yarnhay (Management Company) Limited | Extraterritorial | 2020 |
| Yellow Yamas Limited | Professional & scientific | 2017 |
| Yonder Hill Auctions Ltd | Wholesale & retail | 2023 |
| YOR Nutrition Limited | Manufacturing | 2026 |
| York Lodge (Yeovil) Limited | Real estate | 2003 |