| Walsall Unionist Holdings Limited | Financial services | 1935 |
| Walsall Vapes Ltd | Wholesale & retail | 2024 |
| Walsall Whizz Kids Club Limited | Education | 2014 |
| Walsall Wholesales Ltd | Wholesale & retail | 2025 |
| Walsall Windows Tinting Ltd | Wholesale & retail | 2020 |
| Walsall Wood Chippy Ltd | Hospitality | 2025 |
| Walsall Wood Community Football Club | Arts & recreation | 2009 |
| Walsall Wood Convenience Store Ltd | Wholesale & retail | 2023 |
| Walsall Wood Holdings Ltd | Financial services | 2025 |
| Walsall Wood Local Ltd | Wholesale & retail | 2025 |
| Walsall Wood Tyre & Service Ltd | Wholesale & retail | 2014 |
| Walsall Working for Change CIC | Construction | 2022 |
| Walsh Funerals Limited | Other services | 2023 |
| Walsh Memorials Limited | Other services | 2022 |
| Walsh Property Developments Limited | Construction | 2016 |
| Walter & Sons Waste Management Limited | Water & waste | 2006 |
| Walton Trading House Ltd | Construction | 2008 |
| WAM Limited | Wholesale & retail | 1993 |
| Wandermate Limited | Information & communication | 2021 |
| Wardlaw Locum Ltd | Health & social care | 2023 |
| Wardon Food Co Limited | Hospitality | 2022 |
| Waregrain (Autopaints) Limited | Wholesale & retail | 2004 |
| Waregrain Limited | Wholesale & retail | 1968 |
| Warewell Ltd | Wholesale & retail | 2023 |
| Waris AK Ltd | Wholesale & retail | 2025 |
| Warke's Dairy & Bakery Ltd | Hospitality | 2012 |
| Warm-Serve Heating Limited | Other services | 2019 |
| Warmsouls Ltd | Wholesale & retail | 2017 |
| Warner Holmes Properties Limited | Real estate | 2024 |
| Warren Cooper Holdings Limited | Extraterritorial | 2013 |
| Warren Cooper Refurbishments Limited | Construction | 2006 |
| Warren House Centre (Holdings) Ltd | Financial services | 2017 |
| Warren House Veterinary Centre Limited | Professional & scientific | 2010 |
| Warston Management Services Limited | Administrative & support | 2010 |
| Warwick Dynamics Limited | Extraterritorial | 2000 |
| Warwick Motor Company Limited | Wholesale & retail | 2022 |
| Warwickshire Roofing & Refurbishment Ltd | Construction | 2018 |
| WAS Traders Ltd | Wholesale & retail | 2024 |
| Washington Digital Services Ltd | Information & communication | 2022 |
| Wasquare Healthcare Ltd | Public administration | 2025 |
| Wassupport Ltd | Construction | 2018 |
| Watanbakery Limited | Wholesale & retail | 2025 |
| Watchbox (Leamington Spa) Company Limited | Wholesale & retail | 2007 |
| Water-Filled Glass Ltd | Manufacturing | 2020 |
| Waterflo Limited | Hospitality | 2003 |
| Waterfront Group Holdings Ltd | Real estate | 2024 |
| Waterside Property Estate Ltd | Real estate | 2024 |
| Waterstone Limited | Real estate | 2024 |
| Watkins Affiliate Marketing Limited | Administrative & support | 2024 |
| Watts Clift Holdings Ltd | Other services | 1963 |
| Watts Healthcare Limited | Health & social care | 2012 |
| Wayne's Motorhome & Leisure Service & Repairs Ltd | Manufacturing | 2024 |
| WAYS2MED Ltd | Education | 2023 |
| Wayy Wellness Ltd | Health & social care | 2024 |
| WAZ Tyre's Ltd | Manufacturing | 2019 |
| WB Asset Group Ltd | Real estate | 2022 |
| Wbarratt (UK) S & D Ltd | Administrative & support | 2019 |
| WBH Holdings Ltd | Financial services | 2021 |
| WCH Property Group Limited | Financial services | 2024 |
| WCL Haulage Limited | Transport & logistics | 2013 |
| WDC Automotive Ltd | Other services | 2024 |
| WDS Haulage Ltd | Transport & logistics | 2015 |
| WE Always WIN Limited | Wholesale & retail | 2023 |
| WE ARE Boogie Sound Limited | Professional & scientific | 2020 |
| WE ARE in Your Corner C.I.C. | Education | 2021 |
| WE Buy & Sell Limited | Wholesale & retail | 2021 |
| WE Care Walsall Ltd | Health & social care | 2023 |
| WE DO Transport Ltd | Transport & logistics | 2025 |
| WE FIX Roofing Ltd | Construction | 2026 |
| WE GOT Motors Ltd | Wholesale & retail | 2025 |
| WE Just Care Limited | Health & social care | 2023 |
| WE Know Office Ltd | Wholesale & retail | 2013 |
| WE Smile Ltd | Health & social care | 2022 |
| Wealth International Ltd | Wholesale & retail | 2019 |
| Wealthsure Holdings Ltd | Financial services | 2025 |
| Wealthsure Property Ltd | Real estate | 2025 |
| Wealthy Care Limited | Health & social care | 2017 |
| Weathertech Roofing Ltd | Construction | 2018 |
| Web Bridges Ltd. | Information & communication | 2024 |
| Webb Building & Civil Engineering Contractors Ltd | Construction | 2005 |
| Webiby Ltd | Information & communication | 2025 |
| Webuyanybusandcoach.Com Limited | Wholesale & retail | 2016 |
| Webuyanyvanandtruck Limited | Wholesale & retail | 2024 |
| Wedelivercars.Co.Uk Ltd | Extraterritorial | 2025 |
| Wedge Holdings and Investments Ltd | Financial services | 2020 |
| Wedge Plating Limited | Manufacturing | 2010 |
| Wedgewood Court RTM Company Limited | Households | 2016 |
| Weight Clinic Ltd | Health & social care | 2017 |
| Weightloss Strategies Ltd | Arts & recreation | 2019 |
| Welborn Jones Limited | Construction | 2021 |
| Welcome Chicken Limited | Hospitality | 2018 |
| Welcome Panda Limited | Hospitality | 2025 |
| Welcome Stranger Limited | Professional & scientific | 2022 |
| Weld Mech Installations Ltd | Manufacturing | 2014 |
| Weldalloy (West Midlands) Limited | Manufacturing | 2009 |
| Welkins Property Limited | Real estate | 2014 |
| Wellbeing Care Solutions Ltd | Health & social care | 2017 |
| Wellbeing Empowered Solutions C.I.C. | Health & social care | 2023 |
| Wellcare Services Ltd | Health & social care | 2025 |
| Wellfort Consulting Ltd | Information & communication | 2021 |