| TAD Signs (Tadcaster) Ltd. | Manufacturing | 2017 |
| Tadcaster Albion 2010 Limited | Arts & recreation | 2010 |
| Tadcaster Albion in the Community CIC | Health & social care | 2024 |
| Tadcaster and Rural Community Interest Company | Professional & scientific | 2013 |
| Tadcaster Swimming Pool Trust | Arts & recreation | 2004 |
| Tadcaster Taxis Limited | Transport & logistics | 2019 |
| Tadcrafters Community Interest Company | Arts & recreation | 2016 |
| Taddy Fast Foods Limited | Hospitality | 2017 |
| Tadweld Holdings Ltd | Financial services | 2012 |
| Tallboy Home Ltd | Wholesale & retail | 2021 |
| Tallboy Interiors Ltd | Wholesale & retail | 2018 |
| Teds.Dog Ltd | Administrative & support | 2016 |
| Telaross Ltd | Professional & scientific | 2025 |
| Temple of SHE Limited | Other services | 2025 |
| THE Crooked Billet (Saxton) Ltd | Hospitality | 2022 |
| THE Dark Horse Espresso Bar Ltd | Hospitality | 2016 |
| THE Lettings House (NE) Ltd | Households | 2018 |
| THE Little Yorkshire Candle Company Ltd | Manufacturing | 2016 |
| THE Lock Wizard Ltd | Real estate | 2017 |
| THE New Inn (CF) Ltd | Hospitality | 2019 |
| THE Organic Pantry Limited | Wholesale & retail | 2015 |
| THE Riley-Smith Hall Charitable Company | Other services | 1992 |
| THE Rise Property Group Ltd | Real estate | 2025 |
| THE Rockingham Arms (Towton) Limited | Hospitality | 2024 |
| THE Sales Equation Ltd | Professional & scientific | 2010 |
| THE Sea Catcher Ltd | Hospitality | 2014 |
| THE ST. Helen's Mews Sewage Company Limited | Administrative & support | 1993 |
| THE Works Tadcaster Limited | Other services | 2025 |
| THE Wright Financial Company Ltd | Professional & scientific | 2019 |
| THE Wright Financial Consultancy Ltd | Professional & scientific | 2025 |
| THE Yorkshire Chimney Sweep and Supply Company Limited | Wholesale & retail | 2018 |
| Thebuntingcompany.Com Ltd | Manufacturing | 2025 |
| Those Licensing People Limited | Information & communication | 2013 |
| Thrive Performance Psychology Ltd | Professional & scientific | 2024 |
| Throstle Nest Developments Limited | Construction | 2018 |
| Ticked Services Limited | Construction | 2024 |
| TMO Property Investments Limited | Real estate | 2017 |
| TMO Trading Ltd | Real estate | 2016 |
| Torre DEL Greco Ltd | Hospitality | 2012 |
| Totally Polished Academy Limited | Other services | 2021 |
| Toulston Arts Ltd | Arts & recreation | 2026 |
| Toulston Property Ltd | Real estate | 2025 |
| Tradeprouk Limited | Transport & logistics | 2025 |
| Triangle Consulting Engineers Limited | Professional & scientific | 2006 |
| Triotek Limited | Professional & scientific | 2015 |
| Triple Capital Limited | Real estate | 2026 |
| Triton Project Services Ltd | Construction | 2025 |
| Trusted Trailers Ltd | Manufacturing | 2019 |
| Tuhasmear Ltd | Administrative & support | 2021 |
| Turver Management Limited | Professional & scientific | 2023 |
| TWENTY20 Creative Ltd | Professional & scientific | 2019 |
| Twin Digital MEP Ltd | Professional & scientific | 2021 |
| TY Property Developments Ltd | Construction | 2020 |
| UK Force Limited | Public administration | 2022 |
| Ulla Green Residents Company Limited | Households | 1998 |
| Ursa Pubs Ltd | Hospitality | 2022 |
| Valentine Nurseries Limited | Construction | 1995 |
| Valvebounce Automotive Limited | Wholesale & retail | 2024 |
| Van & Car North Yorkshire Limited | Wholesale & retail | 2012 |
| Vanguard Logisticx Ltd | Transport & logistics | 2024 |
| Vanilla Interiors Ltd | Wholesale & retail | 2019 |
| Vestar Group Ltd | Professional & scientific | 2020 |
| Vhaorrift Ltd | Transport & logistics | 2021 |
| Vibdouiz Ltd | Transport & logistics | 2021 |
| Vicinity Trading Limited | Information & communication | 2017 |
| Victoria Mills Commercial Management Ltd | Financial services | 2024 |
| Victoria Mills Property Management Ltd | Households | 2021 |
| VIO PHD Ltd | Transport & logistics | 2026 |
| Vixen Rail Telecoms Limited | Information & communication | 2016 |
| W & S Dance Ltd | Real estate | 2021 |
| W Design Solutions Ltd | Professional & scientific | 2018 |
| Walkers Kitchen Limited | Hospitality | 2021 |
| Walpharae Ltd | Transport & logistics | 2021 |
| Waretone Ltd | Transport & logistics | 2021 |
| Washfield Ltd | Administrative & support | 2022 |
| Watermark Construction Projects Ltd | Construction | 2023 |
| Wavesires Ltd | Administrative & support | 2021 |
| West View House (UK) Limited | Administrative & support | 2003 |
| West Yorkshire Society of Architects | Professional & scientific | 1885 |
| Wharfedale Mortgages Ltd | Financial services | 2018 |
| Whitfield Building Limited | Construction | 2025 |
| Wighill Park Guns TV Ltd | Information & communication | 2024 |
| Wirewise Electrical Yorks Limited | Construction | 2025 |
| WK Catering Ltd | Hospitality | 2024 |
| WM4 Ltd | Health & social care | 2021 |
| Woodsource Builders Limited | Construction | 2025 |
| WQF Consultants Ltd | Professional & scientific | 2025 |
| Xcel Health & Safety Ltd | Health & social care | 2025 |
| Xystera Ltd | Administrative & support | 2021 |
| Yes/No Studio Limited | Professional & scientific | 2019 |
| Yorcare Limited | Health & social care | 2007 |
| York Roofer Ltd | Construction | 2023 |
| Yorkie Development Ltd | Real estate | 2019 |
| Yorkshire Farming and Wildlife LLP | | 2011 |
| Yorkshire Learning Trust | Education | 2018 |
| Yorkshire Martial Arts Ltd | Arts & recreation | 2022 |
| Yorkshire Metals & Waste Management Ltd | Water & waste | 2025 |
| Yorkshire Pubco Limited | Wholesale & retail | 2020 |
| Yorkshire Pubs & Inns Limited | Hospitality | 2014 |
| Yorkshire Wellness Clinic Ltd | Health & social care | 2023 |