| Wisteria Hair Ltd | Other services | 2016 |
| Withymoor Island Limited | Real estate | 2000 |
| Withymoor Island Trust Limited | Hospitality | 1999 |
| WJM Haulage Limited | Transport & logistics | 2025 |
| WM Housing Ltd | Real estate | 2024 |
| WM Legal Consultancy Limited | Professional & scientific | 2011 |
| WM Parapets Ltd | Construction | 2023 |
| WMC Midlands Ltd | Information & communication | 2015 |
| WMD Group Ltd | Manufacturing | 2026 |
| WMT Energy Solutions Limited | Construction | 2015 |
| Wmtt Ltd | Water & waste | 2018 |
| Wolbridge Timber Windows & Doors Limited | Manufacturing | 2024 |
| Wolfmon Inc Holdings Ltd | Financial services | 2019 |
| Wolfmon Inc Ltd | Professional & scientific | 2019 |
| Wolfpack Events Ltd. | Arts & recreation | 2023 |
| Wolverhampton & Dudley Properties Limited | Real estate | 2002 |
| Wolverhampton Automatic Machine Tools Limited | Professional & scientific | 2000 |
| Wolverhampton Citizens Advice Bureaux | Health & social care | 1985 |
| Wolverhampton City Ltd. | Extraterritorial | 2002 |
| Wolves Building Services (Holdings) Ltd | Financial services | 2019 |
| Wombourne Building Ltd | Construction | 2020 |
| Wombourne MOT Centre Limited | Wholesale & retail | 2023 |
| Wombourne Padel Ltd | Arts & recreation | 2026 |
| Wombourne Tyres Limited | Manufacturing | 2018 |
| Women Writes Limited | Arts & recreation | 2018 |
| Wonderful Events Ltd | Administrative & support | 2024 |
| Wood N Pallets Limited | Manufacturing | 2017 |
| Woodchuckers Limited | Wholesale & retail | 2021 |
| Woodcroft Industrial Roofing Limited | Construction | 2019 |
| Woodlea Homes Private Limited | Real estate | 2026 |
| Woodsetton Consulting Ltd | Professional & scientific | 2024 |
| Woodsetton Delight Ltd | Wholesale & retail | 2026 |
| Woodsetton Designworks Limited | Manufacturing | 2000 |
| Woodsetton Developments LLP | | 2019 |
| Woodskill Joinery Limited | Construction | 2008 |
| Worcester Presses Holdings Limited | Financial services | 2018 |
| Worcester Presses Limited | Manufacturing | 2005 |
| Wordsley Timber Supplies Limited | Wholesale & retail | 2020 |
| Work Port Ltd | Information & communication | 2014 |
| Workstation Limited | Administrative & support | 2018 |
| World Class Events Ltd | Hospitality | 2022 |
| World Wide Vibes Ltd | Administrative & support | 2025 |
| Worlds for ALL Limited | Education | 2022 |
| Worxtra Limited | Administrative & support | 2020 |
| Wrapp Kitchen's & Interiors Limited | Construction | 2023 |
| Wright at Height Access Solutions Limited | Agriculture & fishing | 2015 |
| Wright Time Restorations Ltd | Wholesale & retail | 2026 |
| Write Angle Company Limited | Arts & recreation | 2004 |
| Writechoiceforever Ltd | Wholesale & retail | 2023 |
| Wroxall Projects Ltd | Construction | 2013 |
| WS Driving Ltd | Transport & logistics | 2019 |
| Wstt Limited | Administrative & support | 2020 |
| Wulfrun Management Company Limited | Households | 1983 |
| WV FX Ltd | Financial services | 2023 |
| Wylie Holdings & Investments Ltd | Financial services | 2022 |
| Wynne Group Holdings Ltd | Financial services | 2026 |
| X1 Trading Ltd | Information & communication | 2011 |
| Xcel Property Hub Ltd | Real estate | 2025 |
| Xhri Mobile Tyres Ltd | Manufacturing | 2024 |
| XI HO Limited | Hospitality | 2025 |
| Xillix Tech Ltd | Wholesale & retail | 2025 |
| Xperienced IT Limited | Information & communication | 2000 |
| Xpert Roofing Ltd | Construction | 2026 |
| Xtreme Fitness (Midlands) Ltd | Wholesale & retail | 2004 |
| XYZ Care Ltd | Health & social care | 2025 |
| Y & a Car Hire Limited | Administrative & support | 2025 |
| Y Dee's Jamaican Diner Ltd | Hospitality | 2017 |
| Yak-Qa Food and Beverage Consultancy Services Ltd | Professional & scientific | 2020 |
| Yakodo Limited | Wholesale & retail | 2020 |
| Yaqoob Enterprises Limited | Transport & logistics | 2022 |
| Yatisha Limited | Health & social care | 2025 |
| YCP Associates Limited | Professional & scientific | 2019 |
| Ydwb Limited | Construction | 2019 |
| Yellow Box Software Limited | Information & communication | 2019 |
| Yellow Stone Associates Limited | Administrative & support | 2024 |
| Yem-Yem Ltd | Wholesale & retail | 2025 |
| YES2 Driving Academy Ltd | Education | 2023 |
| Yevette Motors Ltd | Wholesale & retail | 2025 |
| YEW Tree Care Services Ltd | Health & social care | 2026 |
| York Nutrition Online Limited | Wholesale & retail | 2019 |
| York UK Hosting Limited | Information & communication | 2001 |
| Young Bull Capital Ltd | Financial services | 2023 |
| Young Bull Finance Ltd | Education | 2023 |
| Your Caring Physios Ltd | Health & social care | 2025 |
| Your Choice Bathrooms Ltd | Wholesale & retail | 2011 |
| Your Choice Group Ltd | Health & social care | 2018 |
| Your Food and Life Ltd | Manufacturing | 2026 |
| Your Home OUR Castle Ltd | Real estate | 2025 |
| Your Money Your Way CIC | Education | 2019 |
| Your One Stop Ltd | Wholesale & retail | 2025 |
| Youth Evolution Sports Academy CIC | Arts & recreation | 2024 |
| Yummy Dudley Limited | Hospitality | 2018 |
| Z Ukmotors Ltd | Wholesale & retail | 2023 |
| Z. Dean Transport Ltd | Transport & logistics | 2023 |
| Zachaeus Cole Limited | Health & social care | 2020 |
| Zafar and Mazhar Transport UK Limited | Transport & logistics | 2020 |
| Zafran Builders Ltd | Construction | 2026 |
| Zahooq Ltd | Wholesale & retail | 2024 |
| Zahra R Ltd | Health & social care | 2022 |
| Zainab ZEB Food Ltd | Hospitality | 2022 |