| Vyro Ltd | Information & communication | 2019 |
| Vyro Properties Ltd | Real estate | 2020 |
| W Creative Limited | Other services | 2020 |
| W Hairdressing Limited | Other services | 2011 |
| W&F Properties North East Limited | Real estate | 2023 |
| W.F. Contractors Ltd | Construction | 2012 |
| W.M Allison & Sons Farms Ltd | Agriculture & fishing | 2025 |
| W.W North East Ltd | Wholesale & retail | 2026 |
| W2K Ltd | Households | 2012 |
| Wade Brothers Ltd | Construction | 2013 |
| Wade Construction Management Consultants Limited | Professional & scientific | 2018 |
| Wade Optometry Limited | Health & social care | 2011 |
| Waite Management Limited | Professional & scientific | 2004 |
| Wakkumop Ltd | Wholesale & retail | 2026 |
| Walk Works Limited | Extraterritorial | 2021 |
| Walker Compliance Solutions Ltd | Professional & scientific | 2023 |
| Walker Reinhart Limited | Real estate | 2012 |
| Walker Subsea Engineering Ltd | Professional & scientific | 2011 |
| Walker Subsea Group Ltd | Financial services | 2026 |
| Wallers Convenience Stores Limited | Wholesale & retail | 2016 |
| Walton Electrical Solutions Limited | Construction | 2025 |
| Walton Telecom Ltd | Information & communication | 2019 |
| Waltons Concrete Ltd | Mining & quarrying | 2010 |
| Walworth Castle Management Company Limited | Households | 2010 |
| Wangdi Food Limited | Hospitality | 2023 |
| Ward & Sons Holdings Ltd | Real estate | 2018 |
| Ward & Sons Ltd | Real estate | 2019 |
| Ward Capital Ltd | Real estate | 2023 |
| Ward Estates & Developments Limited | Real estate | 2015 |
| Ward Leisure Vehicles Ltd | Wholesale & retail | 2020 |
| Ward Properties Ltd | Real estate | 2018 |
| Ward Property Investments Limited | Real estate | 2007 |
| Ward Retreats Limited | Hospitality | 2020 |
| Warde Consulting Ltd | Information & communication | 2013 |
| Wardman Brown Properties Limited | Real estate | 2020 |
| Wardmans Architectural Services Limited | Professional & scientific | 2014 |
| Wardrobe Envy Company Ltd | Wholesale & retail | 2021 |
| Wards Estates Limited | Real estate | 2007 |
| Wards Investments Limited | Financial services | 2026 |
| Wards Storage and Hire Ltd | Transport & logistics | 2016 |
| Warren Triggs Associates Limited | Professional & scientific | 2001 |
| Warrior Optical Ltd | Professional & scientific | 2025 |
| Wartersco Ltd | Arts & recreation | 2024 |
| Wash and Go (NE) Ltd | Other services | 2025 |
| Wash and Go Darlington Ltd | Other services | 2018 |
| Water Management (UK) Limited | Administrative & support | 2025 |
| Watson & Bell Funeral Service Ltd | Wholesale & retail | 2013 |
| Watsonm Limited | Wholesale & retail | 2025 |
| Wave Physiotherapy & Aesthetics Limited | Health & social care | 2022 |
| Waydon Leisure Limited | Hospitality | 2025 |
| WB Distributions Ltd | Wholesale & retail | 2025 |
| WB Fine Rugs Ltd | Wholesale & retail | 2019 |
| WBW North East Ltd | Administrative & support | 2025 |
| WE ARE the Efficient Farming Generation Limited | Agriculture & fishing | 2023 |
| WE DO Health and Safety Limited | Professional & scientific | 2016 |
| WE DO HR Limited | Administrative & support | 2003 |
| WE Dominate Nutrition Limited | Arts & recreation | 2016 |
| WE EAT Together Limited | Hospitality | 2017 |
| WE Haul Ltd | Transport & logistics | 2025 |
| WE MIX 4U Ltd | Manufacturing | 2026 |
| We'Re Wolf Cleaning Ltd | Administrative & support | 2020 |
| Wear Valley IBC Supplies Ltd | Wholesale & retail | 2024 |
| Wear Valley Tanks Limited | Manufacturing | 2024 |
| Weaver Tech Limited | Information & communication | 2017 |
| Webahead Internet Ltd | Information & communication | 2012 |
| Webatech Limited | Information & communication | 2017 |
| Webuyneproperty Ltd | Real estate | 2026 |
| Webworks Internet (UK) Limited | Professional & scientific | 2009 |
| Wecount Ltd | Professional & scientific | 2021 |
| Weddingsday Limited | Other services | 2006 |
| Weir Consulting Limited | Professional & scientific | 2025 |
| Welbeck Engineering Ltd | Professional & scientific | 2019 |
| Welch Trading Ltd | Wholesale & retail | 2025 |
| Welch's Consumables Ltd | Wholesale & retail | 2023 |
| Weldex Solutions Limited | Manufacturing | 2024 |
| Well Wired Electrical Ltd | Construction | 2014 |
| Wellington Street (Bridlington) Management Company Limited | Real estate | 2007 |
| Wensleydale Airbnb Limited | Households | 2025 |
| Wentworth Gate (Virginia Water) Management Company Limited | Households | 1997 |
| Wenzile Ltd | Administrative & support | 2018 |
| Wepresent Group Limited | Wholesale & retail | 2020 |
| West Coast Cottages Ltd | Real estate | 2016 |
| West END Cleaning Ltd | Administrative & support | 2018 |
| West END Landscaping Limited | Administrative & support | 2021 |
| West END Lane Cars Limited | Transport & logistics | 2005 |
| West END Mews Management Limited | Households | 2003 |
| West END Tree and Landscaping Limited | Construction | 2019 |
| Westbrook Paving Limited | Construction | 2018 |
| Westbrook Windows Limited | Manufacturing | 2020 |
| Westcliffe Court Owners (Darlington) Limited | Households | 1977 |
| Westford Capital Limited | Other services | 2018 |
| Westford Limited | Other services | 2018 |
| Westford Properties Limited | Construction | 2020 |
| Westholme Farm Ltd. | Manufacturing | 2016 |
| Westpark Property Company Limited | Real estate | 2004 |
| Westpoint Freehold Limited | Households | 2015 |
| Westwater Property Maintenance Ltd | Construction | 2024 |
| Westways Freight Limited | Transport & logistics | 2017 |
| WF HR Ltd | Wholesale & retail | 2023 |
| WG Clarke Logistics Ltd | Transport & logistics | 2025 |