| WE Deliver Couriers Limited | Transport & logistics | 2025 |
| WE Sell 4U Limited | Wholesale & retail | 2010 |
| Wealth Trust Consultants Ltd | Professional & scientific | 2022 |
| Webhunter Services Limited | Information & communication | 2014 |
| Wedge IP Management Co, Limited | Arts & recreation | 2021 |
| Welch's of Wilmslow Cleaning Services Ltd | Administrative & support | 2019 |
| Wellington Investment One Limited Partnership | | 2007 |
| Wellness Trading Limited | Wholesale & retail | 2007 |
| Wendy's Broadcast Services Limited | Administrative & support | 2004 |
| Wentworth Jones Publishing Limited | Information & communication | 2023 |
| West Riding TV Limited | Information & communication | 2025 |
| Westbrook Villas Management Company Limited | Households | 2014 |
| Westend Lodge Limited | Hospitality | 2024 |
| Western Electrical Holding Limited | Extraterritorial | 2001 |
| Western Electrical Limited | Extraterritorial | 1985 |
| Western Electrical Wholesale Limited | Extraterritorial | 1994 |
| Westgate Project Management Limited | Extraterritorial | 2003 |
| Westleigh Maintenance Company Limited | Households | 1987 |
| Wharfe Media Productions Ltd | Professional & scientific | 2026 |
| Wharfe Rural Planning Ltd | Professional & scientific | 2017 |
| Whiston and Britland Funeral Services Ltd | Other services | 2021 |
| White Acre Estates Limited | Construction | 2013 |
| White Sands Hotel & Spa Limited | Real estate | 2025 |
| Whitebox Architecture Limited | Professional & scientific | 2005 |
| Whitefort Contractors Belfast Ltd | Hospitality | 2009 |
| Whole Corp. Limited | Information & communication | 2015 |
| Whole Holdings Limited | Financial services | 2008 |
| Wide Lens Limited | Information & communication | 2018 |
| Wiis Clarges Offices Limited | Construction | 2013 |
| Wiis Clarges Retail Limited | Construction | 2014 |
| Wild & Watmore Turf Farms Limited | Other services | 1984 |
| Wild Gaffs Ltd | Construction | 2025 |
| Wild Heart Yoga Ltd | Other services | 2020 |
| Wildfire Neon Limited | Wholesale & retail | 2019 |
| Will Tasho Consulting Ltd | Professional & scientific | 2025 |
| William Stobart Limited | Extraterritorial | 2013 |
| William Sturt Limited | Extraterritorial | 2014 |
| Williams Plant Sales Ltd | Wholesale & retail | 2021 |
| Williams Tarr Construction Limited | Construction | 1918 |
| Williams Tarr Developments (Hale Place) Limited | Real estate | 2007 |
| Williams Tarr Developments Limited | Construction | 1968 |
| Williams Tarr Holdings Ltd | Professional & scientific | 1954 |
| Williams Tarr Homes Limited | Construction | 1990 |
| Williams Tarr Property Holdings Limited | Real estate | 1985 |
| Williams, Tarr Residential (Chester) Limited | Construction | 2000 |
| Willow of Knutsford Limited | Wholesale & retail | 2011 |
| Wilson HAY Medical Limited | Professional & scientific | 2013 |
| Windmill Consultancy and Coaching Limited | Public administration | 2024 |
| Winnington Urban Village Development Company Limited | Construction | 2003 |
| Wisdom A.I. Limited | Wholesale & retail | 2024 |
| WJS Automotive Limited | Wholesale & retail | 2020 |
| WJS Estates and Project Management Ltd | Professional & scientific | 2004 |
| WJS Fire and Safety Limited | Administrative & support | 2009 |
| WMP Properties Ltd | Other services | 1997 |
| Wood and Company Limited | Financial services | 1981 |
| Wood Group Kenny Limited | Professional & scientific | 1978 |
| Wood Group Kenny UK Limited | Professional & scientific | 1988 |
| Wood International Limited | Professional & scientific | 2016 |
| Wood Limited | Professional & scientific | 2015 |
| Wood UK Limited | Financial services | 1999 |
| Woodcote Automotive Consultants Limited | Professional & scientific | 1999 |
| Woodlands Care (Cheshire) Limited | Health & social care | 2017 |
| Woodlands Crescent Residents C.I.C. | Real estate | 2015 |
| Woods Butchers of Knutsford Limited | Wholesale & retail | 2011 |
| Woods Property Partnership Ltd | Real estate | 2024 |
| Woodseaves Limited | Real estate | 2021 |
| Wookhan Investments Ltd | Financial services | 2024 |
| Woolf Properties Limited | Real estate | 2018 |
| Woolf Property Ltd | Real estate | 2018 |
| Workwell Wellbeing Ltd | Arts & recreation | 2026 |
| World Change Ltd | Information & communication | 2014 |
| Worldplan Business Systems Limited | Professional & scientific | 1997 |
| Worldwide Crushers LP | | 2009 |
| Worry Matters Limited | Health & social care | 2021 |
| Worth IT Ltd | Information & communication | 2022 |
| Worthysafe Property Management Limited | Administrative & support | 1988 |
| WPI Construction Limited | Construction | 2024 |
| Wragg Advisory Ltd | Professional & scientific | 2026 |
| Wraith Holdings International Limited | Financial services | 2019 |
| WS Holdco 1 Limited | Financial services | 2022 |
| WS Investco Limited | Financial services | 2025 |
| WS Storage Solutions Limited | Real estate | 2018 |
| WS Temporary Buildings Limited | Extraterritorial | 2021 |
| WS Transport Ltd | Financial services | 2022 |
| Wsss Holdings Limited | Financial services | 2024 |
| WT Wilkinson Properties LLP | | 2007 |
| Wyndcroft Limited | Financial services | 2016 |
| Wynnhill Hilltop Ltd | Real estate | 2017 |
| X-Hail Meditation Ltd | Other services | 2018 |
| Xavier Enterprises Limited | Professional & scientific | 2022 |
| Xentum Limited | Financial services | 2004 |
| Xentum Sport Limited | Professional & scientific | 2025 |
| Xentum Wellbeing Limited | Extraterritorial | 2023 |
| XY Sense UK Limited | Information & communication | 2024 |
| Yellow Insights Limited | Professional & scientific | 2021 |
| Yellow Rose Flooring Ltd | Construction | 2026 |
| Yellowsub Limited | Financial services | 2022 |
| Yellowsub Projects Limited | Administrative & support | 2022 |
| YHH Technologies Ltd | Information & communication | 2016 |
| Youel Murray Limited | Information & communication | 1988 |