| TPA Holdings Ltd | Financial services | 2025 |
| TPA Homes Limited | Real estate | 2023 |
| TPA Transport Limited | Transport & logistics | 2019 |
| Trade Washrooms Limited | Wholesale & retail | 2018 |
| Triton Building Solutions Limited | Construction | 2009 |
| Triton Construction Holdings Limited | Financial services | 2016 |
| Triton Construction Limited | Construction | 2005 |
| Trust Financial Ltd | Financial services | 2019 |
| TSS (GB) Ltd | Manufacturing | 2011 |
| Turton Hall Management Company Limited | Households | 1984 |
| Tyas Building Services Ltd | Construction | 2017 |
| UJI Energy Drink Ltd | Manufacturing | 2019 |
| UK AID 365 Ltd | Health & social care | 2020 |
| UK Calibration (Services) Limited | Administrative & support | 2015 |
| UK Eco Motors Ltd | Wholesale & retail | 2019 |
| UK Ortho BED Ltd | Wholesale & retail | 2024 |
| UKC Diagnostics Limited | Manufacturing | 2026 |
| Ukelc & Co Limited | Administrative & support | 2009 |
| Union Investments 2 Ltd | Real estate | 2020 |
| Unison Industries Ltd | Professional & scientific | 2017 |
| Utopia Beds Ltd | Manufacturing | 2019 |
| Valor Salt Extraction Ltd | Mining & quarrying | 2021 |
| Vault 768 Ltd | Hospitality | 2021 |
| Vegan Energy Drink Ltd | Manufacturing | 2019 |
| VENUE22 Ltd | Hospitality | 2026 |
| Verbium Ltd | Professional & scientific | 2026 |
| Vesta Property Group (Fenay Lane) Ltd | Construction | 2025 |
| Vesta Property Group Ltd | Construction | 2025 |
| Vibe Graphics Limited | Information & communication | 2004 |
| Victus Vehicles Ltd | Wholesale & retail | 2025 |
| Vidalux Ltd | Wholesale & retail | 2025 |
| Vive Healthcare Ltd | Public administration | 2025 |
| Voltear Property Co Ltd | Real estate | 2024 |
| Voltpro Industrial Services Limited | Construction | 2024 |
| W R Sowden & SON Limited | Construction | 2009 |
| W T Beds Ltd | Wholesale & retail | 2022 |
| Watergate Mills Limited | Real estate | 2015 |
| WE SUE Anyone Ltd | Other services | 2012 |
| Webath Limited | Wholesale & retail | 2022 |
| Wedeliverthings Ltd | Transport & logistics | 2026 |
| West Yorkshire Mobile Tyres Ltd | Wholesale & retail | 2025 |
| West Yorkshire Plumbing and Heating Services Limited | Manufacturing | 2011 |
| Wharfe Properties Limited | Real estate | 1980 |
| Whitehead Installations Limited | Construction | 2026 |
| Willow Valley Farms Limited | Agriculture & fishing | 1973 |
| Willow Valley Golf & Country Club Limited | Arts & recreation | 1994 |
| Windows a Pane Limited | Construction | 2021 |
| Windy Bank Dairy Farm Limited | Agriculture & fishing | 1985 |
| Winslade Delivery Ltd | Transport & logistics | 2026 |
| Wolf & Bear Prints Limited | Manufacturing | 2025 |
| Worsley Wholesale Butchers Limited | Wholesale & retail | 1982 |
| Wowgraphix Ltd | Manufacturing | 2020 |
| Wright Electrical Solutions Ltd | Construction | 2024 |
| WS Strategies Ltd | Professional & scientific | 2022 |
| WTD Sheet Metal Fabrications Limited | Manufacturing | 2002 |
| WW Partnership Ltd | Real estate | 2026 |
| Y F Furniture Limited | Manufacturing | 2001 |
| YNV Car Group Ltd | Wholesale & retail | 2022 |
| Yonika Dwellings Limited | Real estate | 2023 |
| Yonika Limited | Information & communication | 2012 |
| Yorkco 99 Limited | Wholesale & retail | 1993 |
| Yorkshire Build & Design Limited | Construction | 2025 |
| Yorkshire Elite Football Academy Limited | Education | 2021 |
| Zainab Saba Ltd | Wholesale & retail | 2025 |
| Ziggyzaza Limited | Hospitality | 2025 |
| Zora Beds Ltd | Wholesale & retail | 2026 |