| Technical Safety Management Limited | Administrative & support | 2008 |
| Tempest Gripping Co Ltd | Information & communication | 2019 |
| Temple 1967 Limited | Extraterritorial | 2013 |
| Templec Limited | Construction | 2003 |
| THE Barn Hair and Beauty Elloughton Limited | Other services | 2011 |
| THE Black Sherpa Limited | Professional & scientific | 2025 |
| THE Bodoni Press Ltd | Manufacturing | 2024 |
| THE Broken Cheesecake Ltd | Hospitality | 2025 |
| THE Carpet Genie Ltd | Administrative & support | 2026 |
| THE Castle Spa Kelly Ltd | Other services | 2008 |
| THE Colour Collective Ltd | Construction | 2025 |
| THE Craft Boutique Buy Ltd | Wholesale & retail | 2024 |
| THE Creative Motherhood Coach Ltd | Health & social care | 2026 |
| THE Dance World Directory Ltd | Arts & recreation | 2024 |
| THE Elms Rehabilitation Centre Limited | Agriculture & fishing | 2023 |
| THE FOX and Coney Limited | Hospitality | 2013 |
| THE Gym at Core Ltd | Arts & recreation | 2026 |
| THE Hair Extension Boutique (UK) Limited | Other services | 2013 |
| THE Lighthouse School and Alternative Provision Ltd | Education | 2022 |
| THE Lovely Gift Group Limited | Wholesale & retail | 2014 |
| THE Pompiere Pizza Company Limited | Administrative & support | 2016 |
| THE Purple PA Limited | Administrative & support | 2024 |
| THE Ridings Medical Group LLP | | 2017 |
| THE Snack Club Limited | Wholesale & retail | 2024 |
| THE Social Outline Ltd | Professional & scientific | 2024 |
| THE Treehouse Goole Ltd | Health & social care | 2022 |
| THE Treehouse South Cave Ltd | Health & social care | 2023 |
| THE Triton Inn Limited | Hospitality | 2024 |
| THE Word Agency Ltd | Professional & scientific | 2019 |
| THE Yorkshire Refill Company Limited | Wholesale & retail | 2020 |
| Thiago Media Ltd | Professional & scientific | 2025 |
| Tidmouth Holdings Limited | Financial services | 2024 |
| Tilia Creations Limited | Manufacturing | 2020 |
| Tina Shortland Language Services Limited | Professional & scientific | 2020 |
| TJ Trading Express Ltd | Wholesale & retail | 2019 |
| TM Solicitors Limited | Professional & scientific | 2010 |
| Toft Construction (Yorkshire) Ltd | Construction | 2018 |
| Toft Developments Ltd | Construction | 2018 |
| Toned Designs Ltd | Wholesale & retail | 2025 |
| Tormak Holdings Limited | Financial services | 2026 |
| Toscar Consultancy Services Limited | Professional & scientific | 2015 |
| Tough Luck Creative Ltd | Professional & scientific | 2023 |
| Tough Luck Group Ltd | Wholesale & retail | 2022 |
| TPA Cyber Security Ltd | Information & communication | 2018 |
| Tractair Industrial Ltd | Manufacturing | 2019 |
| Tractair Limited | Manufacturing | 1999 |
| Tractair Rail LLP | | 2010 |
| Transworld Express Limited | Transport & logistics | 2000 |
| Trident Electrical Installations Ltd | Administrative & support | 2023 |
| Truckexport Limited | Wholesale & retail | 1999 |
| True North Growth Partners Ltd | Professional & scientific | 2025 |
| Truffull Limited | Information & communication | 2016 |
| Trunkmain Limited | Households | 1994 |
| Tufchis Investments Limited | Real estate | 2025 |
| Tufchis Ltd | Health & social care | 2016 |
| Tune'D Home Motoring Services Ltd | Wholesale & retail | 2024 |
| Turney Medical Limited | Health & social care | 2025 |
| TVM Solutions Limited | Transport & logistics | 2013 |
| Unheard Ltd | Professional & scientific | 2025 |
| Union Aggregates & Grab Hire (East Yorkshire) Limited | Construction | 2020 |
| Uniskip Environmental Services Limited | Water & waste | 2002 |
| UNIT8 Yorkshire Ltd | Transport & logistics | 2025 |
| United Energy Experts Ltd | Construction | 2025 |
| Urbanwave 121 Limited | Real estate | 2023 |
| Urbanwave 122 Limited | Real estate | 2023 |
| Urbanwave 123 Limited | Real estate | 2023 |
| Urbanwave 124 Limited | Real estate | 2025 |
| Urbanwave 125 Limited | Real estate | 2025 |
| Urbanwave 126 Limited | Real estate | 2025 |
| Urbanwave Developments (Holdings) Limited | Financial services | 2026 |
| Urbanwave Developments Limited | Construction | 2024 |
| UTA Services Ltd | Health & social care | 2017 |
| V Bryan Limited | Professional & scientific | 2006 |
| Vantasure D&I Ltd | Construction | 2024 |
| Vicbud Limited | Construction | 2024 |
| VIE Physiotherapy Limited | Health & social care | 2012 |
| Vincent Hong Limited | Health & social care | 2015 |
| Virtualhrdirector Limited | Professional & scientific | 2009 |
| Visiyaa Limited | Public administration | 2025 |
| VKK Limited | Health & social care | 2015 |
| Voretech Limited | Information & communication | 2025 |
| VVN Ltd | Real estate | 2024 |
| W Furmage Properties Ltd | Real estate | 2026 |
| W.A.B.Logistics Ltd | Construction | 2015 |
| W5 Motors Ltd | Wholesale & retail | 2024 |
| WAB Pest Control Ltd | Administrative & support | 2025 |
| Walkahead Ltd | Administrative & support | 2006 |
| Walker Tooling Services Ltd | Professional & scientific | 2025 |
| Wallingfen Farm Supplies Limited | Arts & recreation | 2024 |
| Wallingfen Game Farm Limited | Agriculture & fishing | 2013 |
| Waqas Education Consultants Ltd | Education | 2022 |
| Waterfront Records Ltd | Wholesale & retail | 2020 |
| Waterland Events Limited | Water & waste | 2015 |
| Waters Edge (Beverley) Management Company Limited | Real estate | 2001 |
| Watson Plant & Agricultural Services Ltd | Manufacturing | 2020 |
| WE DO Tennis C.I.C. | Arts & recreation | 2018 |
| Web Exploride Ltd | Information & communication | 2024 |
| Websideview Ltd | Information & communication | 2018 |
| Weighton Wold Pool Ltd | Arts & recreation | 2024 |
| Welton Firewood Limited | Wholesale & retail | 2022 |