| Woolston Car Clinic Ltd | Wholesale & retail | 2022 |
| Woolston Commercials Ltd | Transport & logistics | 2017 |
| Woolston Electrics Limited | Construction | 2009 |
| Woolston Wasps Link Club Limited | Arts & recreation | 1995 |
| Wootton Communication Systems Ltd | Information & communication | 2017 |
| Worcester Parkway (Stoulton) Ltd | Real estate | 2021 |
| Workario Ltd | Information & communication | 2019 |
| Workforce Warehouse Ltd | Wholesale & retail | 2025 |
| Workforce Way Ltd | Transport & logistics | 2019 |
| Workplace Drink Solutions Ltd | Administrative & support | 2012 |
| Workshop Equipment Supplies Ltd | Wholesale & retail | 2010 |
| Workwaise Limited | Information & communication | 2026 |
| Workwise Technologies Ltd | Information & communication | 2026 |
| World Christian Outreach Alliance Limited | Education | 2025 |
| World Merit Limited | Education | 2012 |
| Worldwide Hospitality & Sponsorship Ltd | Arts & recreation | 2018 |
| Worldwide Hospitality Group & VIP Travel Ltd | Administrative & support | 2024 |
| Worldwide Hospitality Group Limited | Arts & recreation | 2016 |
| Worldwide Hospitality Limited | Arts & recreation | 2023 |
| Worldwide Media Group Limited | Professional & scientific | 2019 |
| Worsley Builders & Sons Ltd | Construction | 2019 |
| Worsley Catering Limited | Real estate | 1976 |
| Worsley Green Property Limited | Administrative & support | 2010 |
| Worsley Heating Ltd | Construction | 2012 |
| Worth Plant Hire Ltd | Administrative & support | 2006 |
| Worxcel Business Solutions Limited | Information & communication | 2016 |
| Worxly Consulting Limited | Administrative & support | 2025 |
| WOW Business Ltd | Administrative & support | 2023 |
| WOW Wardrobes Ltd | Construction | 2025 |
| WP1 Holdings Ltd | Real estate | 2026 |
| WPJ Limited | Construction | 2021 |
| Wrap Cartel Ltd | Other services | 2023 |
| Wrapzuk Ltd | Other services | 2019 |
| WRD Solutions Limited | Manufacturing | 2025 |
| Wreger Building Services Ltd | Construction | 2016 |
| Wreger Landscaping & Groundworks Ltd | Administrative & support | 2025 |
| Wren Consulting Engineers Limited | Administrative & support | 2007 |
| Wren Interiors Ltd | Construction | 2026 |
| Wrenbright Ltd | Administrative & support | 2008 |
| Wrestles Group Limited | Professional & scientific | 2014 |
| Wrexham Priory Limited | Real estate | 2022 |
| Wright Airborne Computing Limited | Administrative & support | 2021 |
| Wright Analysis Limited | Administrative & support | 2013 |
| Wright's Electrical Services Ltd | Construction | 2025 |
| Wrighton Wealth Management Limited | Professional & scientific | 2026 |
| WRR Installations Ltd | Construction | 2023 |
| WS Environmental Holding Limited | Transport & logistics | 2026 |
| WS Express Ltd | Extraterritorial | 2022 |
| WS Freight Services Limited | Transport & logistics | 2021 |
| WS Homedel Ltd | Transport & logistics | 2022 |
| WS People Providers Limited | Administrative & support | 2025 |
| Ws&S Solutions and Distribution Limited | Transport & logistics | 2017 |
| WST Group Limited | Transport & logistics | 2022 |
| WST Holdings Limited | Financial services | 2020 |
| WT Comm OPS Ltd | Administrative & support | 2023 |
| Wtfc Consulting Ltd | Construction | 2018 |
| Wtfc Licensed Ltd | Wholesale & retail | 2021 |
| Wtfc Retail Ltd | Wholesale & retail | 2024 |
| Wtis Limited | Information & communication | 2001 |
| Wtlgi Ltd | Hospitality | 2016 |
| WTV Commercials Ltd | Wholesale & retail | 2018 |
| WTV Holdings Limited | Administrative & support | 2018 |
| Wular Ltd | Information & communication | 2026 |
| Wurvs Ltd | Construction | 2021 |
| WVC Holdings Limited | Financial services | 2020 |
| WVG Autocare Ltd | Wholesale & retail | 2021 |
| WW Consultancy Limited | Administrative & support | 2025 |
| WW Lifting Ltd | Construction | 2025 |
| Www.Cad-Resource.Com Limited | Administrative & support | 2007 |
| Wylses Ltd | Professional & scientific | 2020 |
| Wymer ROY Consulting Limited | Professional & scientific | 2016 |
| WYN Comms UK Ltd. | Administrative & support | 2014 |
| Wynchcote Limited | Information & communication | 2008 |
| Wynnes Construction Limited | Administrative & support | 2015 |
| Wyre Productions Limited | Information & communication | 2015 |
| WYSE247 Limited | Health & social care | 2022 |
| Wythegill Wind Farm Limited | Energy | 2011 |
| Wyvern Automation Solutions Limited | Professional & scientific | 2024 |
| X Calibre Consultancy UK Limited | Manufacturing | 2014 |
| X Composites Ltd | Administrative & support | 2026 |
| X Travel Ltd | Transport & logistics | 2025 |
| X-Press Legal Services (Franchising) Limited | Professional & scientific | 2003 |
| X-Press Legal Services Limited | Administrative & support | 2001 |
| X10 YCF Ltd | Real estate | 2019 |
| X29 Limited | Professional & scientific | 2020 |
| Xaani Ltd | Health & social care | 2015 |
| Xamolun Limited | Administrative & support | 2025 |
| Xanderbel Limited | Extraterritorial | 2016 |
| Xanfun Limited | Professional & scientific | 2011 |
| Xara Engineering Limited | Administrative & support | 2007 |
| XBK Warrington Ltd | Hospitality | 2025 |
| XC Engineering Ltd | Administrative & support | 2023 |
| XCELLR8 Labs Limited | Professional & scientific | 2025 |
| XCELLR8 Limited | Professional & scientific | 2008 |
| XE Design Limited | Administrative & support | 2025 |
| Xeiad Limited | Professional & scientific | 2003 |
| Xelex Global Limited | Manufacturing | 2015 |
| Xenofate Limited | Administrative & support | 2021 |
| Xenone Limited | Professional & scientific | 2017 |
| Xentek Ltd | Administrative & support | 2013 |