| WE CAN Drive CIC | Education | 2024 |
| WE Change Things Ltd | Professional & scientific | 2014 |
| WE Choose Ltd | Wholesale & retail | 2026 |
| WE DO Retail Ltd | Wholesale & retail | 2013 |
| WE DO Workwear Limited | Professional & scientific | 2023 |
| WE Foods Ltd | Hospitality | 2020 |
| WE Love Creative Media Limited | Administrative & support | 2015 |
| WE R Scoots Limited | Other services | 2017 |
| WE TOW YOU Go Ltd | Transport & logistics | 2025 |
| Wealth & Financial Freedom Limited | Administrative & support | 2010 |
| Wealth Management & Growth Limited | Administrative & support | 2003 |
| Wealthstorey Financial Planning Ltd | Professional & scientific | 2024 |
| Wear Resistance Limited | Manufacturing | 1969 |
| Wear Your HAT Ltd | Professional & scientific | 2021 |
| Weardale Investments Limited | Extraterritorial | 2020 |
| Wearing One Limited | Wholesale & retail | 2022 |
| Weathering Industries Ltd | Professional & scientific | 2022 |
| Weathervane Estates Limited | Real estate | 1997 |
| Web Butler Ltd | Information & communication | 2019 |
| Web Horizons Limited | Information & communication | 2011 |
| Web Personified Limited | Information & communication | 2007 |
| Web Wise Wizardry Ltd | Administrative & support | 2024 |
| Webbcar Ltd | Arts & recreation | 2013 |
| Webid Consult Ltd | Administrative & support | 2012 |
| Webid Global Ltd | Administrative & support | 2024 |
| Webidia Ltd | Information & communication | 2014 |
| Webinar Wizards Ltd | Professional & scientific | 2026 |
| Webster Technologies Limited | Manufacturing | 2000 |
| Webster's Building and Properties Limited | Real estate | 2020 |
| Webster's Mechanical Limited | Construction | 2012 |
| Websters Fish & Chips Limited | Wholesale & retail | 2012 |
| Webtech Consulting Ltd | Information & communication | 2023 |
| Webtek GB Limited | Construction | 2002 |
| Webuy Equity Limited | Real estate | 2025 |
| Wedderburn Elite Ltd | Administrative & support | 2025 |
| Wedding Cars Hire Sheffield Ltd | Transport & logistics | 2023 |
| Wedding Event Wholesalers Ltd | Wholesale & retail | 2026 |
| Weddles BNG Limited | Professional & scientific | 2026 |
| Wedge Roofing Centres Holdings Limited | Extraterritorial | 2005 |
| Wedge Roofing Centres Limited | Extraterritorial | 1945 |
| Wednesday Limited | Administrative & support | 2002 |
| Wednesdayite Limited | Other services | 2014 |
| Wedoliver.Com Limited | Professional & scientific | 2009 |
| Weeboweb Limited | Information & communication | 2008 |
| Weepingbeech Ltd | Hospitality | 2026 |
| Weeton Investments Limited | Financial services | 2019 |
| Weetwood Gardens Management Company Limited | Households | 2003 |
| Wegona Ltd | Professional & scientific | 2026 |
| WEI Plus WEI Limited | Hospitality | 2021 |
| WEI YE Limited | Hospitality | 2017 |
| Weighbridge Services Ltd | Manufacturing | 2012 |
| Weisswell Ltd | Manufacturing | 2026 |
| Weixiao Trading Ltd | Wholesale & retail | 2025 |
| Welbeck Autos Ltd | Wholesale & retail | 2021 |
| Welburn Estates Ltd | Real estate | 2021 |
| Welburn Homes Limited | Construction | 2004 |
| Welcome Housing Association (2) Limited | Hospitality | 2004 |
| Weld and Wore Collective Limited | Wholesale & retail | 2025 |
| Weld and Wore Limited | Wholesale & retail | 2025 |
| Welding Rods Limited | Professional & scientific | 1930 |
| Weldon (Hood Hill) Limited | Agriculture & fishing | 1975 |
| Weldon Works Limited | Construction | 2009 |
| Welfare Services Limited | Health & social care | 1993 |
| Welikenicethings Limited | Professional & scientific | 2007 |
| Well & SON Ltd | Wholesale & retail | 2019 |
| Well Hung Joinery Ltd | Construction | 2019 |
| Well Versed Events Limited | Hospitality | 2013 |
| Well+H Limited | Real estate | 2018 |
| Welland Media Ltd | Information & communication | 2008 |
| Wellbeing for the Elite Ltd | Health & social care | 2020 |
| Wellbeing for Workplaces Ltd | Extraterritorial | 2025 |
| Wellbredhomes Limited | Manufacturing | 2016 |
| Wellcare Living CIC | Health & social care | 2025 |
| Wellco Limited | Wholesale & retail | 2025 |
| Wellingstone Ltd | Hospitality | 2014 |
| Wellington Express Ltd | Hospitality | 2017 |
| Wellington House Estates Limited | Construction | 1985 |
| Wellington News Limited | Hospitality | 2024 |
| Wellington Pictures Limited | Information & communication | 2003 |
| Welloa Limited | Health & social care | 2015 |
| Wells and Shaw Solutions Limited | Mining & quarrying | 2018 |
| Wells Court Management (Barnsley) Limited | Households | 2012 |
| Wells Richardson Limited | Professional & scientific | 1992 |
| Wells Studios Limited | Real estate | 2022 |
| Wellth Property Developments Limited | Construction | 2022 |
| Welltrade Limited | Wholesale & retail | 2025 |
| Welup Limited | Wholesale & retail | 2015 |
| Wendy's Fish & Chips Ltd | Administrative & support | 2024 |
| Wenqi Clothes Ltd | Wholesale & retail | 2025 |
| Wenqi Media Ltd | Professional & scientific | 2025 |
| Wenqi Trading Ltd | Wholesale & retail | 2025 |
| Wenqi Vision Ltd | Professional & scientific | 2025 |
| Wentdark Ltd | Administrative & support | 2024 |
| Wentworth Court Management (Penistone) Limited | Households | 2014 |
| Wentworth Financial Planning Limited | Professional & scientific | 2012 |
| Wentworth Sales Ltd | Real estate | 2022 |
| Wenwenq Tading Limited | Wholesale & retail | 2025 |
| Werdi Ltd | Wholesale & retail | 2025 |
| Werkha Limited | Information & communication | 2012 |
| Werkstatt UK Ltd | Wholesale & retail | 2022 |