| Wbml Epublishing & Media Ltd. | Information & communication | 2012 |
| WDI Holdings Limited | Financial services | 2023 |
| Weaver Bess Ltd | Energy | 2022 |
| Well Vale Property Limited | Construction | 2026 |
| Well Vale Rentals Ltd | Real estate | 2026 |
| Wenden Farms Limited | Transport & logistics | 2012 |
| WES Electrical Limited | Construction | 2025 |
| WES Renewables Limited | Manufacturing | 2026 |
| Weston Cross Inn Ltd | Hospitality | 2016 |
| Weston Park (2004) Limited | Households | 2004 |
| Westons Investments Ltd | Construction | 2024 |
| Westside Fabrications Limited | Manufacturing | 2006 |
| WH Polymers Ltd | Manufacturing | 2002 |
| What IF Alliance Limited | Professional & scientific | 2018 |
| What Price Solutions Limited | Wholesale & retail | 2003 |
| Whitecross Court Management Limited | Other services | 2007 |
| Whitfield Court Management Company Ltd | Households | 2021 |
| Wicks Technology Limited | Information & communication | 2024 |
| Wide Eyes Enterprises Limited | Manufacturing | 2017 |
| Wild Rural Ltd | Education | 2021 |
| Williams Holdings Limited | Extraterritorial | 1999 |
| Willow House Nursery School Limited | Education | 2021 |
| Wilton Hall Management Ltd | Households | 2006 |
| Wiltshire Valeting Supplies Limited | Wholesale & retail | 2025 |
| Winsgrove Limited | Professional & scientific | 2013 |
| Wocation Property Limited | Real estate | 2026 |
| Wocation Studio Limited | Information & communication | 2018 |
| Woodfields Fruit Limited | Agriculture & fishing | 2017 |
| Woodpile Coffee Limited | Manufacturing | 2023 |
| Worldwide Education Management Limited | Professional & scientific | 2018 |
| Wozza's Limited | Administrative & support | 2025 |
| Wreford Capital Limited | Financial services | 2025 |
| WVS Valeting Supplies Limited | Wholesale & retail | 2014 |
| WY@ Limited | Construction | 2026 |
| WYE & Welsh LRC Ltd | Other services | 2012 |
| WYE Adventures Limited | Arts & recreation | 2016 |
| WYE Adventures Mobile Events Ltd | Arts & recreation | 2026 |
| WYE Care Ltd | Health & social care | 2024 |
| WYE Carpentry Ltd | Manufacturing | 2022 |
| WYE Control Systems Ltd | Manufacturing | 2020 |
| WYE Courier Services Ltd | Transport & logistics | 2025 |
| WYE DO I Need IT? Ltd | Wholesale & retail | 2025 |
| WYE Environmental Products and Services Ltd | Professional & scientific | 2019 |
| WYE Fencing Limited | Construction | 2026 |
| WYE Flooring Limited | Wholesale & retail | 2020 |
| WYE Lets Ltd | Hospitality | 2022 |
| WYE MAN Ltd | Wholesale & retail | 2024 |
| WYE Media Limited | Professional & scientific | 2013 |
| WYE Ranch Ltd | Arts & recreation | 2026 |
| WYE Severn Property Group Ltd | Real estate | 2026 |
| WYE Support Ltd | Transport & logistics | 2020 |
| WYE Surveyors Ltd | Real estate | 2005 |
| WYE Technical Solutions Ltd | Information & communication | 2020 |
| WYE Valley Aviation Limited | Information & communication | 1987 |
| WYE Valley Chambers Management Company Limited | Real estate | 2021 |
| WYE Valley Chiropractic Clinic Ltd | Health & social care | 2019 |
| WYE Valley Construction Limited | Construction | 2014 |
| WYE Valley Kitchen Ltd | Hospitality | 2016 |
| WYE Valley Kitchen Studio Limited | Construction | 2013 |
| WYE Valley Lime Specialists Limited | Manufacturing | 2023 |
| WYE Valley River Festival CIC | Arts & recreation | 2021 |
| WYE Valley Wines Limited | Agriculture & fishing | 2023 |
| Wye'D Awake Ltd | Hospitality | 2025 |
| Wye-Wood Ltd | Construction | 2023 |
| Wyehost Ltd | Information & communication | 2006 |
| Wyepave & Landscape Centre Ltd | Administrative & support | 2014 |
| Wyestone Ornaments Ltd | Manufacturing | 2022 |
| Wyld Dragons Ltd | Information & communication | 2026 |
| Xaar Aircraft Leasing Limited | Administrative & support | 2020 |
| Xaar Energy Limited | Administrative & support | 2024 |
| Xaar Fmcg Limited | Arts & recreation | 2020 |
| Xaar Group Holdings Limited | Financial services | 2024 |
| Xaar Revolution Limited | Manufacturing | 2019 |
| Yaks & Yetis Limited | Hospitality | 2021 |
| YAT Pottery Ltd | Wholesale & retail | 2008 |
| YAT Rock Property Group Ltd | Real estate | 2026 |
| Yellowrise Limited | Other services | 2020 |
| Yofi Paddle Cafe Limited | Hospitality | 2026 |
| Yofi Paddlesports Ltd | Administrative & support | 2024 |
| Youyi Foods Ltd | Hospitality | 2022 |
| Yudo (UK) Limited | Wholesale & retail | 1996 |
| Zenith Research and Development Limited | Construction | 2007 |
| Zone Secure Ltd | Administrative & support | 2017 |