| THE Pantry Food Services Ltd | Hospitality | 2022 |
| THE Plumbing People SW Limited | Construction | 2017 |
| THE Printing Platform Limited | Manufacturing | 2022 |
| THE Puzzle Museum Limited | Arts & recreation | 1995 |
| THE Seriously Group Limited | Manufacturing | 2017 |
| THE Sheldon Playground Community Interest Company | Arts & recreation | 2017 |
| THE Stove Company Limited | Wholesale & retail | 2006 |
| THE Transfer Press Limited | Wholesale & retail | 2003 |
| THE Whirlwind Charitable Trust | Professional & scientific | 2007 |
| THE Yellow Deli LLP | | 2014 |
| Thomas Dodge Associates Limited | Professional & scientific | 2013 |
| Thor ST Ltd | Professional & scientific | 2025 |
| Thyroid Patient Advocacy | Health & social care | 2010 |
| TIC Dent Ltd | Health & social care | 2012 |
| Tidy Sleeve Ltd | Manufacturing | 2023 |
| Tier 1 Solutions Ltd | Public administration | 2023 |
| Tierney Financial Services Limited | Financial services | 2005 |
| Tilleys Gluten Free Limited | Manufacturing | 2026 |
| Tiny Tim's Landscaping Ltd | Administrative & support | 2021 |
| TIP Top Landscaping Ltd | Agriculture & fishing | 2024 |
| Tiva Properties Ltd | Construction | 2016 |
| TIW Limited | Professional & scientific | 2003 |
| TJ Smith Ltd | Information & communication | 2004 |
| TLB Consulting Ltd | Administrative & support | 2023 |
| Top Barber High Street Limited | Other services | 2024 |
| Top-Flite Roofing Ltd | Construction | 2014 |
| Total Viva Ltd | Hospitality | 1996 |
| Town Farm Buildings Management Company Limited | Households | 1989 |
| Town Planning Support Ltd | Construction | 2006 |
| TR180 Holdings Limited | Professional & scientific | 2018 |
| Tracey Estate Limited | Other services | 2015 |
| Trade FIX Services Ltd | Construction | 2026 |
| Tresorie Limited | Financial services | 2016 |
| Tribute to the Horse Limited | Agriculture & fishing | 2017 |
| Trim Electrical Contractors Limited | Construction | 2018 |
| Trimspear Limited | Real estate | 1988 |
| Trinity Capital Ventures Ltd | Financial services | 2025 |
| Trip Community Transport Association | Transport & logistics | 2000 |
| True Path Audio Limited | Wholesale & retail | 2020 |
| Trusted Geotechnical Ltd | Professional & scientific | 2025 |
| Tsankova & Hristov Ltd | Health & social care | 2014 |
| Tsintsarov Ltd | Health & social care | 2014 |
| Tucker Construction Ltd | Construction | 2024 |
| Turek Dent Ltd | Health & social care | 2014 |
| Turn of the Tide (Devon) Ltd | Wholesale & retail | 2019 |
| Twilight Dent Ltd | Health & social care | 2024 |
| Twilight Property Investment Ltd | Real estate | 2024 |
| Twin Tigers Community Partnership CIC | Arts & recreation | 2023 |
| Twin Tigers Martial Arts & Boxing Club Ltd | Arts & recreation | 2019 |
| Twin Tigers Martial Arts Yeovil Ltd | Arts & recreation | 2026 |
| Two Tails Veterinary Ltd | Professional & scientific | 2026 |
| Twoparkroad Limited | Households | 2025 |
| UK Traditionals Ltd | Manufacturing | 2013 |
| ULTIM8 Construction Limited | Construction | 2010 |
| ULTIM8 Projects Limited | Construction | 2024 |
| ULTIM8 Property Management Limited | Real estate | 2015 |
| Umutcan Ltd | Hospitality | 2024 |
| Umwelt Design LLP | | 2025 |
| Upham Property Limited | Real estate | 2023 |
| Usegis Limited | Administrative & support | 2005 |
| UX2 Limited | Arts & recreation | 2014 |
| V & a Properties Limited | Real estate | 2011 |
| V-Healthy Ltd | Information & communication | 2014 |
| Vale Foods (Holdings) Limited | Financial services | 2022 |
| Vale Machinery Design Ltd | Professional & scientific | 2025 |
| Valhalla IT Services Ltd | Professional & scientific | 2021 |
| Valley Farming Limited | Agriculture & fishing | 2023 |
| Valley Trust & Corporate Services Limited | Professional & scientific | 2025 |
| Vantone Ltd | Construction | 2024 |
| Vape Products Limited | Extraterritorial | 2018 |
| Vector 7 Ltd | Information & communication | 2003 |
| Velvet and Parade Limited | Wholesale & retail | 2013 |
| Vema Consulting Limited | Information & communication | 2016 |
| Verefa Ltd | Information & communication | 2025 |
| Veritas Glazing Solutions Ltd | Construction | 2020 |
| Vernon Accounting Ltd | Extraterritorial | 2015 |
| Vernon Barrow Ltd | Professional & scientific | 2012 |
| Veshengro Limited | Real estate | 2013 |
| Vibe Hype Ltd | Arts & recreation | 2026 |
| Vigo Holdings Limited | Financial services | 2016 |
| Vigo Presses Limited | Wholesale & retail | 2014 |
| Vine Water Architecture & Property Ltd | Construction | 2023 |
| Virtual HR Hub Limited | Administrative & support | 2015 |
| W F Plant Limited | Administrative & support | 2016 |
| W M Bright Ltd | Agriculture & fishing | 2017 |
| Wace Noble Ltd | Households | 2024 |
| Walking Woofs Ltd | Other services | 2023 |
| Warp Drive Solutions Limited | Information & communication | 1998 |
| Waterfield Engineering Alloys Limited | Wholesale & retail | 2014 |
| Watermeadow View Management Company Limited | Real estate | 2015 |
| WB Concepts Ltd | Construction | 2020 |
| Wema-Uk Ltd | Manufacturing | 2024 |
| West Country Butchers Limited | Other services | 2017 |
| Westacre 2017 Limited | Professional & scientific | 2017 |
| Westcountry Team Limited | Other services | 1997 |
| Western Oriental Impex Limited | Professional & scientific | 1997 |
| Westward Aviation Limited | Arts & recreation | 2019 |
| Wick 4X4 Limited | Wholesale & retail | 2023 |
| Widworthy Court Management Limited | Real estate | 1997 |
| Wilavex Ltd | Construction | 2017 |