| Toniqlife Ltd | Information & communication | 2014 |
| Toniqlife Management Ltd | Education | 2023 |
| Top Gold Services Limited | Other services | 2017 |
| Top Nanny Limited | Other services | 2005 |
| Top Therm Ltd | Wholesale & retail | 2025 |
| Toploaded Pulls Ltd | Wholesale & retail | 2025 |
| Total Clens Ltd | Construction | 2023 |
| Total Promotions Limited | Manufacturing | 1998 |
| Touba Catering Ltd | Hospitality | 2023 |
| Town & Country Lettings (Wiltshire) Limited | Real estate | 2012 |
| Town and Country Estates (Wiltshire) Ltd | Real estate | 2011 |
| Town and Country Mortgages (UK) Limited | Financial services | 2012 |
| TR Fire & Security Consultants Limited | Other services | 2018 |
| Trace Communications UK Limited | Construction | 2008 |
| Traskas Consulting Ltd | Professional & scientific | 2026 |
| Travel Savvy Mumma Ltd | Hospitality | 2025 |
| Travis Hughes Ltd | Administrative & support | 2006 |
| Tribe Fitness Ltd | Health & social care | 2019 |
| Tribe PT Ltd | Health & social care | 2019 |
| Triple 888 Limited | Extraterritorial | 2005 |
| Triple Eight Supplies Limited | Wholesale & retail | 1998 |
| Tripp Accountancy Limited | Professional & scientific | 2002 |
| Trisoul Ltd | Professional & scientific | 2025 |
| Triton Stainless Engineering Ltd | Professional & scientific | 2026 |
| Trowbridge Bidco Limited | Administrative & support | 2021 |
| Trowbridge Car Repairs Ltd | Wholesale & retail | 2018 |
| Trowbridge Chamber Community Interest Company | Other services | 2022 |
| Trowbridge Chinese Massage Ltd | Other services | 2022 |
| Trowbridge Curry Take Away Limited | Hospitality | 2023 |
| Trowbridge Festival Ltd | Arts & recreation | 2019 |
| Trowbridge Garden Centre Limited | Extraterritorial | 2026 |
| Trowbridge Holdco Limited | Professional & scientific | 2021 |
| Trowbridge Kebab House Ltd | Hospitality | 2023 |
| Trowbridge Malayali Cultural Association CIC | Education | 2024 |
| Trowbridge Management Company Limited | Real estate | 2015 |
| Trowbridge Midco Limited | Administrative & support | 2021 |
| Trowbridge Motor Supplies Limited | Wholesale & retail | 1980 |
| Trowbridge Office Cleaning Services Limited | Administrative & support | 1990 |
| Trowbridge Osteopathic Practice Limited | Extraterritorial | 2013 |
| Trowbridge Osteopaths & Wellbeing Centre Ltd | Health & social care | 2022 |
| Trowbridge Osteopaths Limited | Extraterritorial | 2013 |
| Trowbridge Power Tools Limited | Wholesale & retail | 2010 |
| Trowbridge RFC (2016) Limited | Arts & recreation | 2016 |
| Trowbridge Scaffolding Limited | Construction | 2013 |
| Trowbridge Topco Limited | Administrative & support | 2021 |
| Trowbridge Towbar Services Limited | Wholesale & retail | 2004 |
| Trowbridge Town Hall Trust Ltd. | Arts & recreation | 2012 |
| Trowbridge Windows Limited | Construction | 2023 |
| Trowbridgehandcarwash Limited | Administrative & support | 2025 |
| Trowle House Limited | Hospitality | 2018 |
| Trustate Limited | Real estate | 2021 |
| TSP Services Ltd | Construction | 2020 |
| TTL 1 Limited | Real estate | 2023 |
| TTL 2 Limited | Real estate | 2023 |
| TTL 4 Limited | Real estate | 2023 |
| Tucker&Tucker Property Investments Limited | Real estate | 2024 |
| Tuhico Ltd | Wholesale & retail | 2025 |
| Tullor Limited | Agriculture & fishing | 1987 |
| Turnaround Capital Associates Limited | Information & communication | 2006 |
| TWENTY9LTD Ltd | Construction | 2020 |
| Twentyeight Trees Ltd | Administrative & support | 2021 |
| Tyler Barrett Property Limited | Real estate | 2022 |
| Tymbark Supermarket Ltd | Wholesale & retail | 2015 |
| Ubique Training & Industry Services Ltd | Administrative & support | 2018 |
| UFT Limited | Professional & scientific | 2009 |
| Ultimate Creator Network Ltd | Professional & scientific | 2025 |
| Umeria-Southwell Ltd | Professional & scientific | 2026 |
| Unideco Home Ltd | Wholesale & retail | 2025 |
| Union House Ltd | Households | 2020 |
| Unisurfity Global Limited | Professional & scientific | 2018 |
| United Fence Products Inc. Ltd | Wholesale & retail | 2004 |
| Unitraka UK Ltd | Professional & scientific | 2018 |
| UNLIMITEDCARE4U Limited | Health & social care | 2020 |
| Unnoticed Ventures Ltd | Professional & scientific | 2020 |
| Upcycle Limited | Manufacturing | 2009 |
| Upper Broad Street Court Management Limited | Real estate | 1986 |
| Upsalls Ltd | Arts & recreation | 2005 |
| Upvc Spares Ltd | Wholesale & retail | 2014 |
| Urban Curryhouse Ltd | Hospitality | 2026 |
| Urban Endurance Ltd | Education | 2018 |
| USA Nails Wiltshire Ltd | Other services | 2018 |
| UXO Consultants Limited | Professional & scientific | 2023 |
| V & a Flooring Limited | Wholesale & retail | 2018 |
| V4 Retail Ltd | Hospitality | 2025 |
| Valiant Security 2020 Ltd | Administrative & support | 2020 |
| Vantage Doors and Windows Limited | Construction | 2023 |
| Vapegods Limited | Wholesale & retail | 2015 |
| Vaughan Asset Group Ltd | Professional & scientific | 2025 |
| Vector Automotive Network Ltd | Transport & logistics | 2025 |
| Velora Commerce Ltd | Wholesale & retail | 2025 |
| Velvet Purse Ltd | Professional & scientific | 2014 |
| Vibe Network Ltd | Wholesale & retail | 2020 |
| Vigar Holdings Limited | Agriculture & fishing | 2022 |
| Vision Empire Limited | Hospitality | 2017 |
| Visions Glazing Solutions Limited | Construction | 2010 |
| Vistar Security (SW) Ltd | Administrative & support | 2026 |
| Vistar Security Guarding Ltd | Administrative & support | 2026 |
| Vistar Security Key Holding & Alarm Response Ltd | Administrative & support | 2026 |
| Vistar Security Ltd | Administrative & support | 2017 |
| Vital Electrics Ltd | Construction | 2015 |