| William Dare (Manor Drive) Limited | Construction | 2014 |
| William Dare (Worcester Lane) Ltd | Construction | 2015 |
| William Dare Turnbull Ltd | Construction | 2019 |
| William James Financial Services Limited | Professional & scientific | 2022 |
| William James Holdings Limited | Financial services | 2022 |
| William Mitchell Funerals Limited | Other services | 2015 |
| William Newman Housing Ltd | Administrative & support | 2017 |
| William Star Limited | Professional & scientific | 2022 |
| Williams Ashton & Anderson Limited | Professional & scientific | 2012 |
| Williams Outright Limited | Professional & scientific | 2020 |
| Williams Property and Leisure LLP | | 2008 |
| Williamson Bell Limited | Real estate | 2008 |
| Willow Blinds Limited | Manufacturing | 2005 |
| Willow Carpentry & Joinery (UK) Ltd | Construction | 2014 |
| Willow Quality Retail Limited | Wholesale & retail | 2019 |
| Willow View Pet Crematorium Ltd | Other services | 2023 |
| Willows Healthcare Ltd | Health & social care | 2020 |
| Willsways Civils and Utilities Ltd | Other services | 2016 |
| Wilson Electrical West Midlands Ltd | Construction | 2022 |
| Wilson Property Sourcing Limited | Real estate | 2018 |
| Wilsthorpe Tavern (Long Eaton) Limited | Hospitality | 2018 |
| WIN Merchandising Ltd | Wholesale & retail | 2023 |
| Windowtech Interframe Limited | Manufacturing | 2007 |
| Windsor Graphics Limited | Extraterritorial | 2010 |
| Wing WAH 557 Limited | Hospitality | 2024 |
| Wingma'Am Limited Liability Partnership | | 2023 |
| Wink Transport Ltd | Transport & logistics | 2013 |
| Winks Hair and Beauty (Walsall) Limited | Other services | 2017 |
| Winson Green Forensic Limited | Health & social care | 2018 |
| Winward Engineering Limited | Agriculture & fishing | 1999 |
| Winward Limited | Extraterritorial | 2010 |
| Winyates Coral Limited | Wholesale & retail | 2023 |
| Wireless Head Ltd | Information & communication | 2012 |
| Wirin Ltd | Information & communication | 2025 |
| Wisdom Enterprises Limited | Wholesale & retail | 2025 |
| Wise Accountant Midlands Ltd | Professional & scientific | 2025 |
| Wisemorefishbar Limited | Hospitality | 2026 |
| Wisetraders Limited | Wholesale & retail | 2016 |
| With This Ring Ltd | Administrative & support | 2025 |
| Witley Homes (Bewdley) Limited | Construction | 2018 |
| Witley Homes Group Limited | Construction | 2013 |
| Wizard Roofing Limited | Construction | 2010 |
| WKM Healthcare Ltd | Administrative & support | 2019 |
| WKM Recruitment Ltd | Administrative & support | 2022 |
| WM Fencing Limited | Construction | 2004 |
| WM Optics Limited | Health & social care | 2021 |
| WM Property Consultants Ltd | Administrative & support | 2023 |
| WM. Wheat & SON Limited | Wholesale & retail | 1994 |
| Wmcare Private Limited | Health & social care | 2013 |
| WME Consultation Ltd | Professional & scientific | 2026 |
| Wmgb Ltd | Wholesale & retail | 2024 |
| Wmpt Builders Limited | Construction | 2014 |
| WMS Projects Ltd | Construction | 2025 |
| Wojtplast Ltd | Construction | 2018 |
| WOK HUI Limited | Hospitality | 2025 |
| Wolf Security Solutions Ltd | Administrative & support | 2019 |
| Wollaton Drives and Patios Limited | Construction | 2021 |
| Women's Club CIC | Health & social care | 2023 |
| Wonfolktious Ltd | Transport & logistics | 2024 |
| Woodcross Limited | Health & social care | 2022 |
| Woodhouse Legal Walsall Ltd | Professional & scientific | 2025 |
| Woodlands Adventure Trading Limited | Arts & recreation | 2017 |
| Woodsfba Ltd | Wholesale & retail | 2025 |
| Woodside Contracts Limited | Other services | 2019 |
| Woodside Environmental Services Ltd | Extraterritorial | 2010 |
| Woodview School Ltd | Education | 2024 |
| Woodward Partners Limited | Agriculture & fishing | 2012 |
| Woofer Logistics Limited | Transport & logistics | 2020 |
| Woolley Estates Limited | Construction | 2025 |
| Wootton Healthcare Limited | Extraterritorial | 2025 |
| Wootton Lodge Limited | Extraterritorial | 2012 |
| Woovapes Ltd | Wholesale & retail | 2023 |
| Worcestershire Building Supplies Ltd | Administrative & support | 1973 |
| Worcestershire Care Services Limited | Health & social care | 2003 |
| Worker Wellness Ltd | Education | 2024 |
| Workerbull Limited | Information & communication | 2020 |
| Workmate.Ai Limited | Information & communication | 2025 |
| Workrest Blades & Grinding Limited | Manufacturing | 2022 |
| Works Software & Engineering Ltd | Information & communication | 2015 |
| Worksmith Ltd | Administrative & support | 2016 |
| World Changers Summit UK Limited | Administrative & support | 2024 |
| World Foods Butcher Ltd | Wholesale & retail | 2025 |
| World General Karate Federation Ltd | Arts & recreation | 2026 |
| World Happiness Ltd | Administrative & support | 2017 |
| World Locums Limited | Administrative & support | 2004 |
| World of Ecommerce Ltd | Wholesale & retail | 2018 |
| World's Gym Ltd | Arts & recreation | 2010 |
| World's Merch Ltd | Wholesale & retail | 2023 |
| World's Proteins Ltd | Wholesale & retail | 2021 |
| Worldoffriends Ltd | Manufacturing | 2024 |
| Worn Again Limited | Wholesale & retail | 2023 |
| Worth D Ltd | Construction | 2026 |
| Worthmanor Limited | Transport & logistics | 1982 |
| Woven Magic Limited | Manufacturing | 2012 |
| WOW Thats Cheap Ltd | Wholesale & retail | 2022 |
| Wowbuyer Limited | Wholesale & retail | 2019 |
| Wowl Academy UK Ltd | Education | 2026 |
| WPH Counselling & Education Service (Incorporating Walsall Pregnancy Help) | Health & social care | 2011 |
| WPH Sussex Limited | Construction | 2012 |
| Wrap Fit UK Ltd | Manufacturing | 2019 |