| THE Village Yurt Ltd | Hospitality | 2024 |
| THE Vintage Caravan Workshop Limited | Manufacturing | 2011 |
| THE Vintage Equestrian Stock Company Limited | Manufacturing | 2025 |
| THE Vulcan Marketing Company Limited | Extraterritorial | 2015 |
| THE Vulcan Operating Company Limited | Extraterritorial | 1999 |
| THE Vulcan Property Management Company Limited | Extraterritorial | 2015 |
| THE Warmsworth Mews Management Company Limited | Households | 2004 |
| THE Weekend Bakery Ltd | Manufacturing | 2025 |
| THE Welding Bay Ltd | Manufacturing | 2020 |
| THE Well-Being Lounge Ltd | Extraterritorial | 2013 |
| THE Wellness Retreat Marrakech Limited | Other services | 2019 |
| THE Whalebone Arch Ltd | Hospitality | 2014 |
| THE White Hart @ Bawtry Ltd | Hospitality | 2023 |
| THE White Hart Owston Ferry Limited | Hospitality | 2017 |
| THE White Witch Limited | Extraterritorial | 2015 |
| THE Windings Management Company Limited | Households | 1999 |
| THE Wooden Model Company Limited | Manufacturing | 2008 |
| THE Wooden Toy Box Ltd | Manufacturing | 2014 |
| THE Wool DEN Ltd | Wholesale & retail | 2021 |
| THE Wooler Motor Cycle Company (2016) Limited | Manufacturing | 2016 |
| THE Yorkshire Audio Guest Book Ltd | Manufacturing | 2023 |
| THE Yorkshire Grey Doncaster Ltd | Hospitality | 2024 |
| THE Yorkshire Steel Group Limited | Extraterritorial | 2026 |
| THE Zenic Group Ltd | Administrative & support | 2018 |
| The-Honey-Hut.Com Ltd | Wholesale & retail | 2021 |
| Thebothyco Ltd | Construction | 2015 |
| Thecleanbrothers Ltd | Administrative & support | 2025 |
| Thecurryhub Limited | Hospitality | 2020 |
| Thefoodlab Ltd | Hospitality | 2017 |
| Thelosttaps Limited | Hospitality | 2023 |
| THEMAKERSH3D Ltd | Manufacturing | 2025 |
| Themilktap Limited | Wholesale & retail | 2025 |
| Thenorthitservice Limited | Information & communication | 2025 |
| Theo Spedition Ltd | Transport & logistics | 2022 |
| Theodore Communications Holdings Limited | Financial services | 2025 |
| Theodore Communications Ltd | Professional & scientific | 2021 |
| Theoretical Engineering Limited | Professional & scientific | 2024 |
| Theplasteringempire Ltd | Construction | 2026 |
| Therahmans Ltd | Hospitality | 2021 |
| Therapharma Consulting UK Ltd | Professional & scientific | 2024 |
| Theraplate Yorkshire and North Lincs Ltd | Agriculture & fishing | 2022 |
| Thermly Limited | Information & communication | 2023 |
| Thermo Ceram Ltd | Extraterritorial | 2025 |
| Thermo Hygienic Cladding Ltd | Construction | 2026 |
| Thermo Secure - UK Limited | Manufacturing | 2020 |
| Thermofuse Limited | Professional & scientific | 2011 |
| Thermofuse Pipelines Limited | Construction | 1997 |
| Thermographic Services Limited | Professional & scientific | 1991 |
| Thermoslimmer UK Limited | Wholesale & retail | 2005 |
| Thervi Ltd | Professional & scientific | 2025 |
| Theydon Windows and Doors Ltd | Construction | 2019 |
| THH Holdings Ltd | Financial services | 2020 |
| THI Properties Limited | Manufacturing | 2008 |
| Thiam and Frere Ltd | Wholesale & retail | 2025 |
| Think Drink Associates Limited | Professional & scientific | 2011 |
| Think Happen Ltd | Professional & scientific | 2020 |
| Think Outdoors CIC | Arts & recreation | 2016 |
| Think Tank Creative Design Limited | Arts & recreation | 2008 |
| Think Tank Training Ltd | Education | 2025 |
| Thinksmart Properties UK Ltd | Real estate | 2025 |
| Third-And-A-Half Venture Ltd | Information & communication | 2024 |
| Thirsty Apple Limited | Financial services | 2007 |
| Thirsty FOX Bars Ltd | Arts & recreation | 2025 |
| This House Property Limited | Real estate | 2016 |
| This IS ME Training Limited | Education | 2020 |
| This REG Ltd | Wholesale & retail | 2016 |
| Thistle Spark Limited | Extraterritorial | 2026 |
| THK Ceilings & Partitions Limited | Construction | 2011 |
| THN Consultancys Limited | Professional & scientific | 2018 |
| Thomas BEN Limited | Construction | 2001 |
| Thomas Chase Services Limited | Professional & scientific | 2009 |
| Thomas Chippendale Limited | Professional & scientific | 1998 |
| Thomas Irwin Limited | Information & communication | 2023 |
| Thomas Pilling TM Ltd | Public administration | 2025 |
| Thomas Quarter Ltd | Real estate | 2019 |
| Thomas Quarter Property Ltd | Real estate | 2020 |
| Thomas Spurr Surveys Limited | Real estate | 2025 |
| Thomas Surfacing & Groundworks Ltd | Construction | 2021 |
| Thomas Warren Limited | Arts & recreation | 2003 |
| Thompson Accounts Ltd | Professional & scientific | 2018 |
| Thompson Fuels & Skip Hire Services Limited | Wholesale & retail | 2005 |
| Thompson Properties (Doncaster) Limited | Real estate | 2019 |
| Thompsons Industrial Cleaning Services Limited | Administrative & support | 2020 |
| Thompsons Projects Ltd | Hospitality | 2025 |
| Thompsons Property & Leisure Ltd | Construction | 2024 |
| Thompsons Property and Sales Ltd | Construction | 2025 |
| Thomson Commercial Consultants Ltd | Professional & scientific | 2017 |
| Thong Kham Ltd | Extraterritorial | 2025 |
| Thorhild Ltd | Water & waste | 2020 |
| Thorimba Global Ltd | Professional & scientific | 2020 |
| Thornbridge Dynamics Ltd | Extraterritorial | 2026 |
| Thorndell Fabrications Limited | Manufacturing | 2017 |
| Thorne Bar Supplies Limited | Hospitality | 2002 |
| Thorne Convenience Ltd | Wholesale & retail | 2025 |
| Thorne Demolition Limited | Construction | 2004 |
| Thorne Golf Club House Limited | Hospitality | 1982 |
| Thorne Golf Club Limited | Arts & recreation | 1980 |
| Thorne Group Limited | Professional & scientific | 2008 |
| Thorne Joinery Services Ltd | Construction | 2017 |
| Thorne Moorends Regeneration Partnership | Health & social care | 2003 |