| Vitality Plus Care Ltd | Health & social care | 2021 |
| Vivo Digital Ltd | Information & communication | 2006 |
| Viztech Ltd | Wholesale & retail | 2023 |
| Vladsolutions Ltd | Transport & logistics | 2019 |
| VW Projects Ltd | Construction | 2026 |
| VW Property Group Ltd | Construction | 2026 |
| W E Softeners Limited | Wholesale & retail | 2012 |
| W G Dell and Sons Limited | Construction | 2012 |
| W&S Autumn Limited | Health & social care | 2012 |
| W.J. Joyce (Engineers) Limited | Wholesale & retail | 1978 |
| Wagtech Projects Ltd | Manufacturing | 1988 |
| Walker Associates Limited | Professional & scientific | 2020 |
| Walker Stuart Land & Planning Ltd | Professional & scientific | 2006 |
| Wall Covering Specialists Limited | Construction | 2024 |
| Wallys Day Nursery Limited | Education | 2024 |
| Waltons Kitchens Ltd | Construction | 2017 |
| Wansbeck 71 Limited | Real estate | 2018 |
| Warwick Upholstery Company Limited | Professional & scientific | 1948 |
| WE ARE Undressed CIC | Wholesale & retail | 2019 |
| Wealth Starters Academy Ltd | Education | 2025 |
| Webb & King Limited | Construction | 2014 |
| Webb of Finance Ltd | Professional & scientific | 2024 |
| Webcareuk Ltd | Information & communication | 2021 |
| Weirside Flats Management Company Limited | Households | 1975 |
| Wellhead Lane Limited | Health & social care | 2015 |
| Wendy Best Journalist Limited | Extraterritorial | 2012 |
| Wendy Best Limited | Extraterritorial | 2012 |
| Wessex and West Ground Investigation Limited | Professional & scientific | 2019 |
| Wessex Credit Ltd | Financial services | 2011 |
| Wessex Hydraulic Services Limited | Manufacturing | 2009 |
| Wessex Mews Limited | Households | 1990 |
| West Country Firearms Ltd | Wholesale & retail | 2017 |
| West Wilts Commercials Ltd | Wholesale & retail | 2024 |
| West Wilts Esprit Gymnastics Club Ltd. | Arts & recreation | 2013 |
| West Wilts Ltd | Hospitality | 2026 |
| West Wiltshire Micros Limited | Wholesale & retail | 1999 |
| Westbury Swimarium Ltd | Arts & recreation | 2022 |
| Westbury United Football Club Limited | Arts & recreation | 2024 |
| Westbury United Youth & Development CIC | Arts & recreation | 2026 |
| Western Force CC CIC | Arts & recreation | 2026 |
| Western Sign Systems Limited | Manufacturing | 1999 |
| Westfield Food City Ltd | Wholesale & retail | 2021 |
| Westwood Farm (Keevil) Limited | Agriculture & fishing | 2008 |
| Whaddon Equestrian Limited | Extraterritorial | 1989 |
| Whisam Trading Ltd | Wholesale & retail | 2025 |
| White Horse Country Club Ltd | Arts & recreation | 2009 |
| White Horse Employment Holdings Limited | Financial services | 2021 |
| White Horse Employment Network Limited | Administrative & support | 1993 |
| White Horse Property Services (Maintenance and Inventory) Ltd | Administrative & support | 2014 |
| White Horse Safety Matters Ltd | Professional & scientific | 2012 |
| White Horse View Limited | Hospitality | 2025 |
| White Knight Interiors Ltd | Manufacturing | 2021 |
| White Tiger Quality Management & Business Improvement Limited | Information & communication | 2013 |
| Whitedean Limited | Construction | 1996 |
| Wicken Consultancy Services Ltd | Professional & scientific | 2008 |
| Wijet Services Limited | Information & communication | 2003 |
| Wiktor Car Repair Ltd | Wholesale & retail | 2024 |
| WILDEB33ST Limited | Information & communication | 2026 |
| Wildflower Counselling Ltd | Health & social care | 2025 |
| Will DO Studio Ltd | Wholesale & retail | 2023 |
| William Turner & SON (Stockport) Limited | Wholesale & retail | 1984 |
| Williams Event Solutions Limited | Administrative & support | 2019 |
| Williams Renovations Ltd | Construction | 2021 |
| Willow Construction (SW) Ltd | Construction | 2026 |
| Wilmead Limited | Construction | 2004 |
| Wilson-Martin Ltd | Construction | 2019 |
| Wiltshire & Somerset Renewables Ltd | Other services | 2019 |
| Wiltshire and Somerset Electrical Services Limited | Other services | 2019 |
| Wiltshire Bacon Company Limited | Wholesale & retail | 2003 |
| Wiltshire Bespoke Ltd | Manufacturing | 2026 |
| Wiltshire Citizens Advice | Other services | 1996 |
| Wiltshire EAR WAX Removal Ltd | Health & social care | 2023 |
| Wiltshire Home Furnishings Limited | Wholesale & retail | 2018 |
| Wiltshire Host Families Limited | Administrative & support | 2016 |
| Wiltshire Kitchens & Appliances Ltd | Construction | 2025 |
| Wiltshire Mind | Health & social care | 2005 |
| Wiltshire Mortgages Limited | Financial services | 2016 |
| Wiltshire Parent Carer Council CIC | Health & social care | 2016 |
| Wiltshire People First | Other services | 2008 |
| Wiltshire Plastering Ltd | Construction | 2021 |
| Wiltshire Rendering Limited | Construction | 2022 |
| Wiltshire Residential Ltd | Real estate | 2025 |
| Wiltshire Spice Limited | Hospitality | 2025 |
| Wiltshire Steel Fabrications Ltd | Manufacturing | 2022 |
| Windowcleanr Ltd | Administrative & support | 2020 |
| Windscreen Wizards Ltd | Wholesale & retail | 2025 |
| Wingfield Blair Associates Limited | Extraterritorial | 2006 |
| Wings Direct Limited | Extraterritorial | 2020 |
| Wingsrise Ltd | Wholesale & retail | 2025 |
| Winston Wolf Solutions Limited | Construction | 2023 |
| WIRED4PRECISION Limited | Information & communication | 2023 |
| Wisdenworldcom Limited | Information & communication | 2007 |
| Witheys Ltd | Real estate | 2025 |
| Withey’S Commercial Property Limited | Real estate | 2021 |
| WKL Ltd | Construction | 2025 |
| WN Autos Ltd | Wholesale & retail | 2025 |
| Wood Lane Chippenham Management Company Limited | Households | 1985 |
| Woodland and Countryside Management Limited | Agriculture & fishing | 2011 |
| Woolley Grange Game Ltd | Agriculture & fishing | 2025 |
| Work 4 U Recruitment Ltd | Administrative & support | 2004 |