| THE Waste Cable Company Ltd | Other services | 2018 |
| THE Wessex Association of Chambers of Commerce | Other services | 1994 |
| THE Window Shop (South West) Limited | Extraterritorial | 2014 |
| Thecatalogstar.Com Limited | Wholesale & retail | 2015 |
| Thefloorsmith Ltd | Construction | 2021 |
| Theraposture Limited | Manufacturing | 1982 |
| Thermbright Ltd | Professional & scientific | 2023 |
| Thornton Property Developments Limited | Construction | 2020 |
| Thornton Property Group Limited | Construction | 2022 |
| Three Daggers Public House Limited | Hospitality | 2021 |
| TI Developments (SW) Limited | Wholesale & retail | 2021 |
| Timber & Allied Services Limited | Wholesale & retail | 2007 |
| Tjbb Investments Ltd | Financial services | 2026 |
| Toninkay Limited | Health & social care | 2022 |
| Total Computers & Accessories Limited | Information & communication | 1995 |
| Total Glamour Ltd | Other services | 2022 |
| Total Love Healthcare Limited | Health & social care | 2023 |
| Total UK Property Maintenance Limited | Administrative & support | 2011 |
| TQP Limited | Real estate | 2017 |
| Trade Anywhere (UK) Ltd. | Wholesale & retail | 2019 |
| Trade Swapz Limited | Other services | 2024 |
| Transition Real Estate Limited | Construction | 2018 |
| Transwilts Community Interest Company | Transport & logistics | 2015 |
| Trident Studios Limited | Real estate | 2020 |
| Trim N Tidy Landscapes Limited | Administrative & support | 2023 |
| Tryhorn Landscape Construction Limited | Construction | 2023 |
| Tube & Valve Supply Ltd | Wholesale & retail | 2018 |
| Turkish Barber Westbury Ltd | Other services | 2025 |
| Typedcms Ltd | Information & communication | 2020 |
| UK Arts & Crafts Limited | Other services | 2012 |
| UK Parts Direct Limited | Wholesale & retail | 2017 |
| Unique Signs Ltd | Manufacturing | 2012 |
| Universal Tool Hire Limited | Manufacturing | 2024 |
| Untold Sales & Lettings Limited | Real estate | 2022 |
| Vantage Safety Services Ltd | Construction | 2025 |
| Vara Property Group Ltd | Construction | 2024 |
| Vehicle Supplies Ltd | Professional & scientific | 2019 |
| Viva Taxi Limited | Transport & logistics | 2025 |
| Vivid Signs Limited | Manufacturing | 2010 |
| Vivital Limited | Wholesale & retail | 2025 |
| VK Retail Ltd | Wholesale & retail | 2019 |
| VOW Agency Ltd | Professional & scientific | 2026 |
| VPS Group Limited | Professional & scientific | 2016 |
| Vvvvv Ltd. | Manufacturing | 2024 |
| Vww.Design Ltd | Professional & scientific | 2023 |
| VYX Global Limited | Professional & scientific | 2013 |
| W H Kemp Technologies Ltd | Professional & scientific | 2017 |
| W J a Fabrication & Construction Ltd | Manufacturing | 2020 |
| W.H. Kemp (Electrics) Limited | Manufacturing | 1967 |
| Walker & Walker Waterproofing Limited | Administrative & support | 2012 |
| Waltham Services Group Ltd | Wholesale & retail | 2018 |
| Waltham Services Property Ltd | Real estate | 2023 |
| Waste to Wealth CIC | Financial services | 2023 |
| Wavesrec Media Ltd. | Wholesale & retail | 2017 |
| Welldeal Limited | Health & social care | 2006 |
| Wellness Without Barriers Limited | Health & social care | 2025 |
| Welton Bibby and Baron Holdings Limited | Administrative & support | 2003 |
| Welton Bibby and Baron Limited | Manufacturing | 2003 |
| Wendy's Limited | Other services | 2009 |
| Were House Management Limited | Real estate | 2006 |
| Wessex & Co. Ltd | Wholesale & retail | 2021 |
| Wessex Commercial Tyres Limited | Wholesale & retail | 2008 |
| West Tech Solutions Limited | Information & communication | 2016 |
| West Wilts Cars Limited | Wholesale & retail | 2019 |
| West Wilts Chiropractors Ltd | Health & social care | 2008 |
| West Wiltshire Coffee Co Ltd | Hospitality | 2024 |
| Westbury Dairies Limited | Wholesale & retail | 2003 |
| Westbury GRP Ltd. | Wholesale & retail | 2013 |
| Westbury Hydraulics Limited | Manufacturing | 2012 |
| Westbury Leigh Community Project Ltd | Arts & recreation | 1999 |
| Westbury Motors Ltd | Wholesale & retail | 2023 |
| Westbury Roofing Supplies Ltd | Wholesale & retail | 2024 |
| Westbury Smiles Limited | Health & social care | 2024 |
| Westbury Spice Ltd | Hospitality | 2021 |
| Westbury United Youth and Development FC Ltd | Arts & recreation | 2025 |
| Western Air Ducts (UK) Limited | Manufacturing | 1978 |
| Western Signalling Ltd | Construction | 2024 |
| Westfield House Services Ltd | Professional & scientific | 2022 |
| Westpak Ltd | Transport & logistics | 2003 |
| Westside Security Ltd | Administrative & support | 2025 |
| WET (IOW) Ltd | Administrative & support | 2011 |
| Whatley's Drive Management Company Limited | Real estate | 2012 |
| Wheeler's (Westbury) Holdings Limited | Professional & scientific | 2010 |
| Wheeler's (Westbury) Limited | Construction | 1982 |
| Wheeler's Fire & Security Limited | Administrative & support | 1982 |
| Wheelers Trustees Limited | Administrative & support | 2022 |
| When Nature Calls Limited | Administrative & support | 2011 |
| White Horse Curry House Ltd | Hospitality | 2024 |
| White Horse Kitchen Fitting Limited | Construction | 2012 |
| White Horse Qhse Solutions Ltd | Professional & scientific | 1997 |
| White Horse Smiles Limited | Health & social care | 2023 |
| White Horse Tints Limited | Wholesale & retail | 2001 |
| White Horse Vehicles Ltd | Wholesale & retail | 2021 |
| White Horse Windows Limited | Construction | 2014 |
| White Horse Windows Property Limited | Real estate | 2019 |
| White Oak Windows Limited | Construction | 2020 |
| Whitehouse Installation Group Limited | Construction | 2021 |
| Wight Event Toilets Limited | Administrative & support | 2011 |
| Wildfur Productions Ltd | Information & communication | 2012 |
| William Rose Financial Ltd | Professional & scientific | 2022 |