| Telebeam Limited | Professional & scientific | 2004 |
| Tern Tide Sailing Ltd | Transport & logistics | 2022 |
| Testway Developments Limited | Construction | 2003 |
| TFC Productions Limited | Information & communication | 2018 |
| THE Darralls Paddocks Limited | Hospitality | 2022 |
| THE Acswoodshop Ltd | Manufacturing | 2019 |
| THE Adolphus Practice Ltd | Health & social care | 2021 |
| THE Association Entertainment Corporation Ltd | Arts & recreation | 2017 |
| THE Bay Tree (Devizes) Home & Gifts Limited | Wholesale & retail | 2014 |
| THE BEE Rookie Ltd | Agriculture & fishing | 2025 |
| THE Bell Inn Great Cheverell Limited | Hospitality | 2016 |
| THE Bespoke Oak Building Company Limited | Construction | 2014 |
| THE Black Gull Limited | Hospitality | 2024 |
| THE Breach Road Management Company Limited | Households | 2016 |
| THE Brewery Corner Management Company Limited | Households | 2023 |
| THE Bridgelands Partnership LLP | | 2026 |
| THE Bright Path Advisory Ltd | Professional & scientific | 2025 |
| THE Cedars (Devizes) Management Company Limited | Households | 2021 |
| THE Community Foundation for Wiltshire & Swindon | Other services | 2008 |
| THE Fantasy Orchestra CIC | Arts & recreation | 2025 |
| THE Farmyard (Urchfont) Management Company Limited | Real estate | 2004 |
| THE Feminine Edge Ltd | Other services | 2025 |
| THE Fine Barber Co. Limited | Other services | 2012 |
| THE Finishing Touch (Southwest) Limited | Construction | 2025 |
| THE Folly (Devizes) Management Limited | Households | 1998 |
| THE Fulltone Orchestra Limited | Arts & recreation | 2019 |
| THE Giving Tree (Devizes) Limited | Wholesale & retail | 2020 |
| THE Glass Radiator Company Limited | Administrative & support | 2009 |
| THE Gourmet Brownie Kitchen Ltd | Manufacturing | 2019 |
| THE Gray Room Limited | Professional & scientific | 2025 |
| THE Harmony Blend Ltd | Wholesale & retail | 2024 |
| THE Healthy Life Company Ltd | Wholesale & retail | 2008 |
| THE Heart of Africa Limited | Wholesale & retail | 2021 |
| THE Heart of Greece Ltd | Wholesale & retail | 2023 |
| THE Helicopter Business Limited | Other services | 2024 |
| THE Heritage Fine Food Company Limited | Wholesale & retail | 1999 |
| THE Inner Yard Ltd | Wholesale & retail | 2024 |
| THE Island Devizes Management Company Limited | Real estate | 2015 |
| THE Jolly Bean Play Cafe Ltd | Hospitality | 2026 |
| THE Keep (Devizes) Management Company Limited | Households | 2012 |
| THE Little Bakehouse Ltd | Manufacturing | 2015 |
| THE Mercers Management Company Limited | Administrative & support | 1993 |
| THE Mews (Heritage Park) Management Company Limited | Households | 2005 |
| THE Mind Tree Cafe. CIC | Wholesale & retail | 2023 |
| THE Muck & Dunder Ltd | Hospitality | 2021 |
| THE Nature Imperative Ltd | Professional & scientific | 2025 |
| THE Nestling Trust | Extraterritorial | 2013 |
| THE Neuro-Nexus Hub Ltd | Professional & scientific | 2026 |
| THE Old Brewery (Devizes) Owners Company Limited | Financial services | 2020 |
| THE Old Builders Yard (Management Company) Limited | Professional & scientific | 2006 |
| THE Old Forge Garage Limited | Wholesale & retail | 2012 |
| THE Olive Pizza&Grill Ltd | Hospitality | 2025 |
| THE Peppermill (Devizes) Limited | Hospitality | 2015 |
| THE Sandhurst Partnership Ltd | Professional & scientific | 2012 |
| THE Student Community Consultancy (Cambridge) CIC | Professional & scientific | 2025 |
| THE Tricks (Event Musicians) Limited | Arts & recreation | 2019 |
| THE Tyre Hub & Autocentres Ltd | Wholesale & retail | 2026 |
| THE Vape LAB Devizes Ltd | Wholesale & retail | 2025 |
| THE Wiltshire Beekeeper Ltd | Agriculture & fishing | 2023 |
| THE Wiltshire Group Ltd | Construction | 2019 |
| Theaetetus Limited | Real estate | 2025 |
| THERAPIES4CHILDREN Ltd | Health & social care | 2025 |
| Thermal Designs U.K. Limited | Manufacturing | 1996 |
| Thistle Rose Business Services Limited | Professional & scientific | 2012 |
| Thomas Humphris Ltd | Information & communication | 2018 |
| Thompson Furniture Agencies Ltd | Wholesale & retail | 2025 |
| Thorn Heating Limited | Construction | 2015 |
| Thorn Surgical Limited | Health & social care | 2016 |
| Thorndale Communications Limited | Information & communication | 2013 |
| Thoroughbred Transformation Limited | Agriculture & fishing | 2023 |
| Three Amigos Motors Ltd | Wholesale & retail | 2026 |
| Time World Limited | Education | 1997 |
| Tiny Mountain Records Limited | Information & communication | 2019 |
| TL Legal Services Limited | Professional & scientific | 2011 |
| TLS (DORMAN1) Limited | Construction | 2026 |
| TLS (Emirates) Ltd | Health & social care | 2025 |
| TLS (GSS) Limited | Construction | 2017 |
| TLS (Ilderton Road) Limited | Construction | 2018 |
| TLS (KPR) Limited | Construction | 2021 |
| TLS (ORMSIDE1) Limited | Construction | 2026 |
| TLS (OXSHOTT1) Limited | Construction | 2025 |
| TLS (Strathnairn) Ltd | Construction | 2020 |
| TLS (WALTHAM1) Limited | Construction | 2026 |
| TMR Servicing Limited | Wholesale & retail | 2008 |
| Toby Randall AGA & Rayburn Specialist Ltd | Construction | 2021 |
| TOM Hiscocks Art Limited | Arts & recreation | 2014 |
| Tommy Bridewell Racing Ltd | Arts & recreation | 2015 |
| Tomorrow Financial Services Ltd | Financial services | 2020 |
| Tomorrow Mortgages Ltd | Financial services | 2020 |
| Top & Tail Ltd | Administrative & support | 2025 |
| Top Nails Devizes Limited | Other services | 2025 |
| Total Estates Limited | Real estate | 2025 |
| Totally Equestrian Limited | Agriculture & fishing | 2017 |
| Towners Taxis Limited | Transport & logistics | 2024 |
| Townsend Barn Nursery Limited | Education | 2011 |
| Townsend Farmyard Management Company Limited | Households | 2026 |
| Track Light Components Limited | Wholesale & retail | 2018 |
| Traction Charger Company Limited | Manufacturing | 1970 |
| Treeline Living Ltd | Construction | 2021 |
| Tresco Ltd | Construction | 2018 |