| Wearwell (UK) Limited | Manufacturing | 1994 |
| Wearwell Group Holdings Limited | Professional & scientific | 2023 |
| Wearwell Group Limited | Manufacturing | 2002 |
| Weatherdry Ltd | Manufacturing | 2019 |
| Weatherproof UK Limited | Construction | 2014 |
| Webb's Landscapes Limited | Administrative & support | 2014 |
| Webfwd Ltd | Information & communication | 2014 |
| Welch Television Limited | Information & communication | 2020 |
| Weldconstruct Limited | Manufacturing | 2005 |
| Wellings Tech Ltd | Manufacturing | 2022 |
| Wendys Homes Limited | Real estate | 2025 |
| Wesley Turbines IP Limited | Professional & scientific | 2014 |
| Wesley Turbines Limited | Energy | 2016 |
| Wesley Turbines Trading Limited | Financial services | 2019 |
| West Bros (Builders) Limited | Construction | 2006 |
| West Midland Lift Services Limited | Construction | 2008 |
| West Midlands Filtration Limited | Water & waste | 2019 |
| West Midlands Golf Club Limited | Professional & scientific | 2000 |
| Westfield Property Company Limited | Professional & scientific | 1994 |
| Weston Education Ltd | Professional & scientific | 2015 |
| Wgaj Holdings Limited | Professional & scientific | 2025 |
| WGN Projects Ltd | Professional & scientific | 2022 |
| What IF Box Limited | Information & communication | 2026 |
| Whatsewever Ltd | Manufacturing | 2026 |
| Whelans Electrical Contractors Ltd | Construction | 2021 |
| Where'Z Wally Dog Grooming & Day Care Ltd | Other services | 2021 |
| Whisper of the Witch.Store Ltd | Wholesale & retail | 2025 |
| White Lion Engineering Limited | Other services | 2006 |
| White Stone Financial Planning Ltd | Financial services | 2022 |
| White Therapy Limited | Health & social care | 2017 |
| Whitehall Residential Properties Limited | Real estate | 2017 |
| Whitehouse Decorators Ltd | Construction | 2022 |
| Whittaker Smith Cleaning Ltd | Administrative & support | 2023 |
| Wichtv Ltd | Information & communication | 2025 |
| Wigginton Fields Residents Association Limited | Households | 2005 |
| Wilberson Limited | Households | 2017 |
| Wilbourne Property Limited | Real estate | 2022 |
| Wild Gourmet Weddings Ltd | Hospitality | 2025 |
| Wild Orange Tree Limited | Wholesale & retail | 2016 |
| Wiles Property Management Ltd | Real estate | 2025 |
| Wilkins Estate Agents Limited | Real estate | 2019 |
| Wilkins Financial Services Limited | Financial services | 2020 |
| Wilkins Group Holdings Limited | Financial services | 2026 |
| Wilkins UK Properties Limited | Real estate | 2022 |
| Wilkins Wealth Management Limited | Financial services | 2021 |
| Will and Bess Fine Wine Ltd. | Wholesale & retail | 2004 |
| Will Wright Management Services Limited | Professional & scientific | 2026 |
| William Michael Power Ltd | Professional & scientific | 2017 |
| William Tolson Holdings Limited | Professional & scientific | 1894 |
| Williams A1 Plumbing Ltd | Construction | 2021 |
| Williams Quality Care & Compliance Services Ltd | Transport & logistics | 2022 |
| Williamson Network Ltd | Administrative & support | 2025 |
| Willow Tree Close Ltd | Construction | 2026 |
| Willowbank Construction Ltd | Construction | 2025 |
| Willson Property Holdings Limited | Financial services | 2022 |
| Wilnecote Youth Hub Limited | Arts & recreation | 2024 |
| Wilson Electrical Solutions Limited | Construction | 2018 |
| Wilson Produce International Limited | Administrative & support | 1998 |
| Wilsons Estates Limited | Real estate | 2016 |
| Wiltshire Property Group Ltd | Real estate | 2025 |
| Wimap Limited | Construction | 2008 |
| Windmill Court Residents Management Company Limited | Households | 2025 |
| Windmill Farms Limited | Real estate | 1997 |
| Window & Door Maintenance Services Limited | Construction | 1999 |
| Windowman Group Limited | Administrative & support | 2006 |
| Windowmania Commercial Limited | Construction | 2019 |
| Winit (UK) Limited | Administrative & support | 2013 |
| Winning Position Limited | Information & communication | 2018 |
| WIRE9 Ltd. | Information & communication | 2019 |
| Witcher Associates Limited | Administrative & support | 2026 |
| Witchified Ltd | Hospitality | 2019 |
| Witherley Blue Lion Ltd | Real estate | 2020 |
| Wiztis Limited | Information & communication | 2013 |
| WJZ Coaching Camps Ltd | Arts & recreation | 2025 |
| WKW Services Ltd | Administrative & support | 1986 |
| WLC Tamworth Ltd | Professional & scientific | 2026 |
| WM Fabrication, Engineering & Maintenance Ltd | Professional & scientific | 2022 |
| WME Services Limited | Construction | 2025 |
| WMF Promotions Ltd | Arts & recreation | 2017 |
| WMS Environmental Ltd | Water & waste | 2022 |
| Wofawat Limited | Information & communication | 2025 |
| WOK Away 18 Limited | Hospitality | 2023 |
| Wolfe Digital Ltd | Professional & scientific | 2023 |
| Wollaston Contracts Ltd | Professional & scientific | 2025 |
| Wollosolution Ltd | Wholesale & retail | 2024 |
| Wolverton Heights Ltd | Real estate | 2024 |
| Wonderfully Made GG Ltd | Arts & recreation | 2018 |
| Wonky Vegetables Ltd | Wholesale & retail | 2016 |
| Wood Construction (UK) Ltd | Construction | 2014 |
| Wood Estate Management Limited | Real estate | 2024 |
| Wood Legal Services Limited | Professional & scientific | 2022 |
| Woodhead Associates Limited | Financial services | 2007 |
| Woodhead Family Estates Limited | Administrative & support | 2020 |
| Woodman Estates Limited | Real estate | 2023 |
| Woods Caribbean Jerk Center Limited | Hospitality | 2023 |
| Woodside Storage Limited | Transport & logistics | 2023 |
| Woofar Ltd | Wholesale & retail | 2023 |
| Wootton Pubs Limited | Hospitality | 2025 |
| Workmerch Limited | Extraterritorial | 2024 |
| Worldwide Investments Group Ltd | Administrative & support | 2019 |