| Waterfront Event Service Ltd | Other services | 2024 |
| WB Hong Kong Limited | Hospitality | 2024 |
| WBA Holdings Ltd | Wholesale & retail | 2022 |
| WD Garage Doors Limited | Construction | 2020 |
| Wear Belting Limited | Extraterritorial | 2007 |
| Weeezy Limited | Water & waste | 2019 |
| Welding and Pipeline Inspection Services Limited | Construction | 2005 |
| Werton Limited | Construction | 1997 |
| Wescot Limited | Real estate | 1997 |
| West Midlands Roofing & Construction Limited | Construction | 2023 |
| Westley International Holdings Ltd | Financial services | 2024 |
| Westmid Blinds Ltd | Manufacturing | 2009 |
| Westwood Construction (Cradley Heath) Limited | Construction | 2008 |
| Wheels International Limited | Manufacturing | 2015 |
| Wheels Vocational and Life Skills Centre Ltd. | Education | 2008 |
| When WE Share Ltd | Information & communication | 2020 |
| Whitchurch Occupational Health Limited | Health & social care | 2004 |
| White Compass Ltd | Professional & scientific | 2021 |
| White Cross Clinic Limited | Public administration | 2020 |
| Whitehouse James Consulting Limited | Professional & scientific | 2025 |
| Whittaker Engineering Ltd | Professional & scientific | 2025 |
| Wibeco Investment Ltd | Financial services | 2026 |
| Wickedwammels Ltd | Arts & recreation | 2025 |
| Wife & Two Quids Limited | Arts & recreation | 2021 |
| Wilkinson Brothers Profiles Limited | Administrative & support | 2014 |
| William Briggs & Sons Limited | Financial services | 1990 |
| Williams Phillips Limited | Manufacturing | 2022 |
| Willow Marsh Fishery Ltd | Agriculture & fishing | 2009 |
| Wilson Management Consultancy Limited | Financial services | 2011 |
| Without a Trace Community Interest Company | Other services | 2024 |
| Wizard Electrical Limited | Construction | 2013 |
| WJM Steel Fabs Limited | Professional & scientific | 2026 |
| WJR Engineering Limited | Professional & scientific | 2011 |
| Woodall Logistics Limited | Transport & logistics | 2020 |
| Worcester Doors Limited | Manufacturing | 2003 |
| Worcester Industrial Doors Limited | Manufacturing | 2006 |
| Workwithbablo Limited | Health & social care | 2022 |
| World of Granite Limited | Wholesale & retail | 2010 |
| Wulfrun Racing Limited | Arts & recreation | 2020 |
| XL Airport Transfers Limited | Extraterritorial | 2023 |
| XL Cars Limited | Transport & logistics | 2011 |
| XL Green Cars Limited | Transport & logistics | 2019 |
| Xmpire Synergy ENT Ltd | Administrative & support | 2026 |
| Yabz Beauty Salon Limited | Other services | 2024 |
| Yobee Limited | Wholesale & retail | 2016 |
| Your Fireplace Limited | Administrative & support | 2019 |
| Z'S Roti Junction Ltd | Hospitality | 2025 |
| ZAC Construction Ltd | Construction | 2025 |
| ZAC Leisure Limited | Hospitality | 2021 |
| Zacmart Ltd | Wholesale & retail | 2025 |
| Zainab ZEB Properties Ltd | Real estate | 2022 |
| Zaks Plaice Limited | Wholesale & retail | 2023 |
| Zeedrive Ltd | Transport & logistics | 2024 |
| Zobot Enterprises Limited | Real estate | 2017 |
| ZOO Amusements Limited | Arts & recreation | 2022 |
| Zoya Services Limited | Hospitality | 2025 |
| Zushu Limited | Wholesale & retail | 2025 |