| THE White Label Orchestra Ltd | Arts & recreation | 2021 |
| THE Wild Insight Safari Company Ltd | Administrative & support | 2019 |
| THE Wilkinson Printing Company Limited | Manufacturing | 2017 |
| THE Wonder Foundry Ltd | Information & communication | 2026 |
| THE Woodville Community Ltd | Administrative & support | 2023 |
| THE Wyedean Weaving (Holdings) Co Ltd | Financial services | 2024 |
| THE Yorkshire Floristry Company Ltd | Wholesale & retail | 2025 |
| THE Youth System Ltd | Education | 2019 |
| Thecoincentre Ltd | Extraterritorial | 2025 |
| Themcfgroup Ltd | Manufacturing | 2025 |
| Theodent Limited | Health & social care | 2019 |
| Thesalonstore Ltd | Wholesale & retail | 2025 |
| Think Free Solar Ltd | Construction | 2023 |
| Thinking OUT Loud Limited | Professional & scientific | 1996 |
| This IS Growth Consulting Limited | Administrative & support | 2021 |
| Thomas Christopher Electrical Ltd | Construction | 2024 |
| Thomas DAN Properties Ltd | Real estate | 2025 |
| Thomas Elsworth Apartments Limited | Households | 1990 |
| Thomas Gabriel Holdings Limited | Extraterritorial | 1987 |
| Thompson Family Property Ltd | Real estate | 2026 |
| Thorncroft Medical Services Limited | Health & social care | 2012 |
| Thornton Golf Club Limited | Arts & recreation | 2013 |
| Thornton Moor Estate Limited | Arts & recreation | 2025 |
| Thornton Property Services Limited | Construction | 2008 |
| Thorntons (Whinburn Farm) Limited | Real estate | 1959 |
| Thorntons of Crosshills Limited | Wholesale & retail | 2016 |
| Thorntons Property (Oakworth) Limited | Real estate | 1963 |
| Thorpe Mill Limited | Manufacturing | 1980 |
| Thoughts Base Ltd | Professional & scientific | 2023 |
| Three Little Birds Bakery Ltd | Wholesale & retail | 2021 |
| Thriving Communities Bradford C.I.C. | Education | 2024 |
| THS Yorkshire Limited | Other services | 2014 |
| Thursby Investments Ltd | Real estate | 2024 |
| Thynne Limited | Wholesale & retail | 2020 |
| Tianyo Food Ltd | Wholesale & retail | 2024 |
| Tidestone Consulting Ltd | Professional & scientific | 2014 |
| Tidswell Roofing Limited | Construction | 2006 |
| Tiempo Salons Ltd | Other services | 2014 |
| Tien YEN Ltd | Other services | 2020 |
| Tiffin Coffee Grande Ltd | Construction | 2019 |
| Tiffin Coffee Ltd | Hospitality | 2017 |
| Tiffin Stadium Catering Limited | Hospitality | 2021 |
| Tiffin Venue Management Ltd | Hospitality | 2023 |
| Tilawa Ltd | Education | 2026 |
| Tiles, Taps & Tubs Ltd | Wholesale & retail | 2012 |
| Tiletek Ltd | Construction | 2022 |
| TIM Done Clinics Limited | Health & social care | 2020 |
| Timbercraft Structures Limited | Wholesale & retail | 2024 |
| Time Travel Software Limited | Hospitality | 2012 |
| Timheaton Ltd | Professional & scientific | 2024 |
| Timnell Limited | Professional & scientific | 1991 |
| Timothy Hird & SON (Builders & Contractors) Limited | Construction | 1984 |
| Tiny Stars Day Nursery Ltd | Education | 2013 |
| TIP Top Camping Ltd | Hospitality | 2022 |
| Titanic Mill Energy Services Limited | Energy | 2009 |
| TJL Design Services Limited | Professional & scientific | 1990 |
| Tkap Investments Ltd | Real estate | 2025 |
| Tklc Logistics Ltd | Transport & logistics | 2023 |
| TL Construction Consultancy Ltd | Professional & scientific | 2025 |
| TM Joinery & Building Contractors Ltd | Construction | 2012 |
| TMC Ventures Europe Ltd. | Professional & scientific | 2013 |
| TMF Property Services Ltd | Construction | 2009 |
| TNG Properties Limited | Real estate | 2026 |
| TNR Storage & Recovery Limited | Transport & logistics | 2025 |
| TO EAT NOW? Ltd | Hospitality | 2022 |
| Toast House Limited | Hospitality | 2024 |
| Tobeone Limited | Information & communication | 2001 |
| Together Works Ltd | Professional & scientific | 2024 |
| Tokyo Tyres Ltd | Extraterritorial | 2025 |
| TOM Phillips Carpets & Flooring Ltd | Wholesale & retail | 2023 |
| TOM R Ltd | Administrative & support | 2017 |
| Tombar Electrical Contractors Limited | Manufacturing | 2016 |
| Tomgard-Web-Design Limited | Information & communication | 2012 |
| Tomliv Limited | Information & communication | 2019 |
| Tong Wala Limited | Extraterritorial | 2022 |
| Toni Marino Ltd | Information & communication | 2018 |
| Tony Bindless Plumbing and Mechanical Services Limited | Construction | 2015 |
| Top Accounts Ltd | Professional & scientific | 2024 |
| Top Attache Limited | Professional & scientific | 2005 |
| Top Notch Decorators Yorkshire Limited | Construction | 2025 |
| Top Wheel Ltd | Wholesale & retail | 2023 |
| Torus Accounting Limited | Professional & scientific | 2022 |
| Total Electronic Xchange Ltd | Other services | 2019 |
| Total Escalators Limited | Manufacturing | 2020 |
| Total Recovered Energy Ltd | Water & waste | 2017 |
| Touchstone Holdings (I) Limited | Financial services | 2022 |
| Touchstone Investments (Riddlesden) Limited | Real estate | 2011 |
| Touchstone Subsidiary Limited | Real estate | 2024 |
| TPM Solutions Consultancy Limited | Information & communication | 2017 |
| TR Sales & Consulting Limited | Professional & scientific | 2015 |
| TR4VEL 24/7 Ltd | Transport & logistics | 2025 |
| Tracey Anne Pickles Limited | Extraterritorial | 2024 |
| Tracey Pickles Ltd | Extraterritorial | 2025 |
| Track and Trace Services Ltd | Administrative & support | 2020 |
| Traditional Catering Limited | Hospitality | 2003 |
| Trafford Agri Enterprises Ltd | Transport & logistics | 2024 |
| Trainhead Limited | Hospitality | 2025 |
| Transflash Limited | Arts & recreation | 2014 |
| Transica Ltd | Information & communication | 2002 |
| Transport M.E. Limited | Transport & logistics | 2025 |