| Winzwood Ltd | Agriculture & fishing | 2018 |
| Wipeway Express Limited | Administrative & support | 2025 |
| Wire-Fittings Limited | Manufacturing | 1961 |
| Wired in Commerce Ltd | Information & communication | 2013 |
| Wiredelec Ltd | Construction | 2026 |
| Wirefox Limited | Information & communication | 2014 |
| Wirral Joint Service Club Ltd | Hospitality | 2022 |
| Wisdom Africana Ltd | Wholesale & retail | 2024 |
| Wisdom Care Staffing Limited | Health & social care | 2022 |
| Wisdom of Trade Ltd | Wholesale & retail | 2023 |
| Wisdom Transport Ltd | Transport & logistics | 2024 |
| Wise Accounting Solutions Limited | Professional & scientific | 2003 |
| Wise Computer Ltd | Wholesale & retail | 2023 |
| Wise Dice Ltd | Wholesale & retail | 2026 |
| Wise Digital Marketing Limited | Professional & scientific | 2021 |
| Wise Point Media Ltd | Wholesale & retail | 2013 |
| Wiseenergy Consultancy Limited | Energy | 2015 |
| Wiseman IT Services Limited | Information & communication | 2018 |
| Wiseman Property Investments Ltd | Real estate | 2023 |
| Wiseman Property Management Ltd | Wholesale & retail | 2010 |
| Wiser Energy Consultancy Ltd | Professional & scientific | 2024 |
| Wishaw Projects Ltd | Transport & logistics | 2015 |
| Wishwell Transport Limited | Transport & logistics | 2025 |
| Wisla Lease Ltd | Real estate | 2026 |
| Wisniewski Company Ltd | Wholesale & retail | 2020 |
| Wisniowski Property Ltd | Real estate | 2021 |
| Wiss Property Limited | Real estate | 2014 |
| Wistan and Becket Media Limited | Professional & scientific | 2025 |
| Wistanswick Ltd | Transport & logistics | 2015 |
| Wisteria & Stone Ltd | Real estate | 2026 |
| Witcham Logistics Ltd | Transport & logistics | 2014 |
| Witham Villa Limited | Administrative & support | 1997 |
| Witham Villa Riding Centre Limited | Education | 2002 |
| Withcote Estates Ltd | Real estate | 2025 |
| Withers Services Ltd | Professional & scientific | 2024 |
| Withers Sports Limited | Wholesale & retail | 2009 |
| Withybrook Professional Ltd | Transport & logistics | 2015 |
| Witlens Ltd | Health & social care | 2019 |
| Witness Trust Limited | Arts & recreation | 2024 |
| Witsend (UK) Limited | Education | 2001 |
| Witsend Properties Limited | Real estate | 2002 |
| Witsend School for Dogs Limited | Professional & scientific | 2002 |
| WIZ Floor Systems Ltd | Construction | 2016 |
| WJC Ventures Limited | Hospitality | 2025 |
| Wjms Properties Limited | Real estate | 2014 |
| WJR BKS Limited | Professional & scientific | 2023 |
| WJS Couriers Limited | Transport & logistics | 2025 |
| Wjsonline Ltd | Wholesale & retail | 2023 |
| Wk&A Ltd | Transport & logistics | 2024 |
| WKM Wealth Holdings Limited | Financial services | 2023 |
| Wknd Girl Ltd | Wholesale & retail | 2023 |
| WLC Property Management Limited | Real estate | 2018 |
| WM Installations Ltd | Wholesale & retail | 2014 |
| WM Maintain Limited | Construction | 2012 |
| WM Roofing & Property Maintenance Ltd | Construction | 2023 |
| WM Sustain Limited | Construction | 2012 |
| WMK Investments Ltd | Real estate | 2024 |
| WMW Limited | Professional & scientific | 2019 |
| WN Property Limited | Real estate | 2017 |
| Wnuk Services Ltd | Extraterritorial | 2016 |
| Woddle UK Ltd | Information & communication | 2024 |
| Woj-Car Ltd | Wholesale & retail | 2025 |
| Wojak Ltd | Transport & logistics | 2013 |
| Wojtex Ltd | Transport & logistics | 2014 |
| WOK & Burg Ltd | Hospitality | 2026 |
| WOK & Smoke Limited | Hospitality | 2024 |
| WOK House Leicester Ltd | Hospitality | 2025 |
| WOK in Croft Limited | Hospitality | 2017 |
| WOK in WOK OUT Leicester Limited | Hospitality | 2020 |
| Wokindo Limited | Hospitality | 2017 |
| Wolbeck Electrics Limited | Energy | 2019 |
| Wolf Parkins Accounting Limited | Other services | 2013 |
| Wolf Parkins Limited | Other services | 2013 |
| Wolfdale Leisure Ltd | Real estate | 2020 |
| Wolfdale School Limited | Education | 2016 |
| Wolfe Farrier Ltd | Agriculture & fishing | 2025 |
| Wolfhouse Ltd | Administrative & support | 2024 |
| Wollerton Skills Ltd | Transport & logistics | 2015 |
| Wolverhampton OP Limited | Wholesale & retail | 2025 |
| Womag Weighing Limited | Manufacturing | 2015 |
| Woman Inc. Ltd | Wholesale & retail | 2023 |
| Women 4 Change C.I.C. | Education | 2022 |
| Women Empowerment Network (WEN) CIC | Administrative & support | 2023 |
| Women in Theatre East Midlands CIC | Arts & recreation | 2016 |
| Women Join Hands Leicester CIC | Other services | 2025 |
| WON Five WON Ltd | Wholesale & retail | 2021 |
| WON Media Limited | Professional & scientific | 2024 |
| Wonder Bian Dang Ltd | Hospitality | 2019 |
| Wonderful Clothing Ltd | Wholesale & retail | 2009 |
| Wonderlust Properties Limited | Real estate | 2025 |
| Wonderlust Trading Limited | Wholesale & retail | 2024 |
| Wondervisionlabs Ltd | Information & communication | 2026 |
| Wonderwall Properties Limited | Real estate | 2004 |
| Wong's Bond Investments Limited | Real estate | 2023 |
| Wood & Sons Decorators Ltd | Construction | 2024 |
| Wood Clinic Carpentry Ltd | Manufacturing | 2024 |
| Wood Experts Ltd | Construction | 2025 |
| Wood Farms (Owston) Limited | Agriculture & fishing | 2019 |
| Wood Hill Property Management Limited | Real estate | 2018 |
| Wood Polishing Specialists Limited | Construction | 2015 |