| THE Really Wild Company Ltd | Wholesale & retail | 2024 |
| THE Spare Room (Hull) Limited | Arts & recreation | 2018 |
| THE Tipi Bar Company Limited | Hospitality | 2022 |
| THE Training College Ltd | Education | 2023 |
| THE Vanilla Hideout Ltd | Hospitality | 2023 |
| THE Wellness Clinic (Willerby) Limited | Health & social care | 2025 |
| THE Yellow Spade Limited | Wholesale & retail | 2022 |
| THE Yorkshire Tipi Company Limited | Administrative & support | 2021 |
| Think 360 Limited | Manufacturing | 2018 |
| Thinq Media Limited | Professional & scientific | 2002 |
| Thompson Decorators Limited | Construction | 2026 |
| Thompson Property Group Ltd | Real estate | 2026 |
| Thomson Plumbing & Heating (Yorkshire) Ltd | Construction | 2026 |
| Thomson Stott LLP | | 2007 |
| Thonock Vale Management Limited | Real estate | 2022 |
| Thornton Bike Festival Ltd | Arts & recreation | 2025 |
| Three Sixty Cars Ltd | Wholesale & retail | 2025 |
| Three Storms Ltd | Arts & recreation | 2012 |
| Three Twos Boxing Limited | Arts & recreation | 2022 |
| Tie-Bar Property Investment & Management Ltd | Real estate | 2024 |
| Tigerpro Supplies Limited | Wholesale & retail | 2025 |
| Tilbeth Holdings Limited | Financial services | 2024 |
| Tilson Scaffolding (Hire & Sales) Limited | Administrative & support | 2010 |
| Tilson Scaffolding Limited | Construction | 2005 |
| TMH Communications Limited | Information & communication | 2017 |
| TOM Glew Joinery Ltd | Construction | 2019 |
| Tony's Textiles Limited | Wholesale & retail | 1982 |
| Tonys Textiles Online Services Limited | Wholesale & retail | 2009 |
| Top 30 Under 30 Ltd | Other services | 2017 |
| Total Lets Ltd | Real estate | 2022 |
| Touch of Tidiness Limited | Administrative & support | 2026 |
| Tracy Savage Ltd | Arts & recreation | 2011 |
| Trade BED Outlet Ltd | Wholesale & retail | 2025 |
| Trade Sign Solutions Limited | Manufacturing | 2017 |
| Trade Waste Solutions Ltd | Water & waste | 2017 |
| Tradefit Electrical and Security Ltd | Construction | 2019 |
| Trafford Accountants Limited | Professional & scientific | 2012 |
| Trafford Aviation Limited | Transport & logistics | 2015 |
| Trafford Financial Group Limited | Extraterritorial | 2015 |
| Trafford Financial Limited | Extraterritorial | 2015 |
| Tranby Investments Ltd | Real estate | 2024 |
| Transtainer Lines Limited | Transport & logistics | 1972 |
| Tree Worx's Limited | Agriculture & fishing | 2009 |
| Treverbyn Associates Ltd | Professional & scientific | 2017 |
| Trig Point Estates Ltd | Real estate | 2024 |
| Triton Forest Products Ltd | Manufacturing | 2020 |
| Troupers Entertainment Ltd | Arts & recreation | 2024 |
| Truth Property Maintenance Ltd | Construction | 2021 |
| Tubex Global Energy Ltd | Construction | 2025 |
| Tunderman Haulage Ltd | Transport & logistics | 2007 |
| Turning Leaf Furniture Specialists Limited | Manufacturing | 2003 |
| Turnpike Way Developments Limited | Construction | 2025 |
| Tuttys Transport Limited | Transport & logistics | 2020 |
| Two Sphynx Holdings Limited | Professional & scientific | 2020 |
| TWS Wellness Ltd | Other services | 2012 |
| Tyne Fishing Limited | Agriculture & fishing | 2014 |
| UK EPS Ltd | Real estate | 2019 |
| UK Fisheries Limited | Professional & scientific | 2004 |
| UK Margot Ltd | Health & social care | 2018 |
| Ultimate Vehicle Leasing (0319) Ltd | Administrative & support | 2019 |
| Ultimate Vehicle Leasing Ltd | Financial services | 2014 |
| United Kingdom Association of Fish Producer Organisations | Other services | 2018 |
| Universal Recycling Limited | Water & waste | 2010 |
| Upstream Outcomes Limited | Information & communication | 2017 |
| Urbanglorybox Limited | Professional & scientific | 2012 |
| Utility Management Services Ltd | Professional & scientific | 2015 |
| Valencro Limited | Information & communication | 2026 |
| Variant Works Ltd | Information & communication | 2025 |
| Ventura Wind Energy Ltd | Professional & scientific | 2014 |
| Venture Qualifications Ltd | Education | 2022 |
| Venus Nails (Hull) Ltd | Other services | 2017 |
| VH Talent Limited | Administrative & support | 2022 |
| Viking Fishing Limited | Agriculture & fishing | 2012 |
| Village Court 14/15 Limited | Real estate | 2017 |
| Village Newsagents Hessle Limited | Information & communication | 2021 |
| Village Pizza Hessle Ltd | Hospitality | 2025 |
| VIP Communications (Hull) Limited | Information & communication | 1995 |
| Vital International Limited | Professional & scientific | 2005 |
| Vivace Bistro Limited | Hospitality | 2024 |
| VJ Express Ltd | Wholesale & retail | 2025 |
| VS Health Associates Limited | Health & social care | 2015 |
| VW Clifton Limited | Real estate | 2002 |
| Vytel Wellness Limited | Health & social care | 2026 |
| Walker I&C Ltd | Professional & scientific | 2024 |
| Wallace Construction & Maintenance Limited | Manufacturing | 2017 |
| Warner Design Limited | Professional & scientific | 2007 |
| Wassen International Limited | Manufacturing | 1974 |
| Waterdale Commercial Ltd | Real estate | 2025 |
| Waterloo Property Development Ltd | Construction | 2013 |
| Waterside Brothers Limited | Financial services | 2017 |
| Waveney Estates Limited | Real estate | 2019 |
| Wayland Farms Limited | Agriculture & fishing | 2008 |
| WB Elite Properties Limited | Real estate | 2025 |
| Wefit Property Services Limited | Administrative & support | 2012 |
| Weightman HL Limited | Hospitality | 2020 |
| Weightman Investment Properties Limited | Real estate | 2003 |
| Welcome Home (Nationwide) Limited | Real estate | 2025 |
| Wellington Road (Beverley) Limited | Households | 2015 |
| Wensley Lodge Properties Limited | Real estate | 2012 |
| Westcountry Seafoods Limited | Wholesale & retail | 1999 |