| Taconova UK Limited | Wholesale & retail | 2022 |
| TAD Engineering Ltd | Professional & scientific | 2022 |
| Tailgate Coffee Ltd | Hospitality | 2024 |
| Tajic Foods Ltd | Hospitality | 2024 |
| Take & EAT Ltd | Hospitality | 2025 |
| Take Five Vending Operations Limited | Hospitality | 1992 |
| Take Part Network Community Interest Company | Education | 2010 |
| Take US 2 the Magic Limited | Administrative & support | 2008 |
| Talant Ltd | Wholesale & retail | 2025 |
| Talentz Recruits Ltd | Administrative & support | 2023 |
| Talk to Huddy Limited | Professional & scientific | 2020 |
| Tallet Systems Ltd | Information & communication | 2023 |
| Talstaff Limited | Administrative & support | 2000 |
| Tamasima Limited | Health & social care | 2018 |
| Tammewar Pharma Limited | Wholesale & retail | 2026 |
| Tammewar Properties Limited | Real estate | 2020 |
| Tammysat (Maltby) Ltd | Wholesale & retail | 2012 |
| Tammysat Ltd | Wholesale & retail | 2010 |
| Tamoko Beauty Limited | Extraterritorial | 2024 |
| Tamper Ltd | Hospitality | 2026 |
| TAN & Tone UK Ltd | Other services | 2025 |
| Tancos Cleaning Service Ltd | Administrative & support | 2023 |
| Tandrem Limited | Wholesale & retail | 2017 |
| Tanfastic (Rotherham) Limited | Wholesale & retail | 2010 |
| Tanning Studio Experience Ltd | Other services | 2021 |
| Tantec Autoclaves Ltd | Other services | 2024 |
| Tapers Ltd | Construction | 2025 |
| Tapmate Ltd | Professional & scientific | 2025 |
| TAR Property Holdings Ltd | Real estate | 2024 |
| Tarchon Energy Finco Limited | Financial services | 2025 |
| Tarchon Energy Limited | Energy | 2017 |
| Tarchon Energy Projectco Ltd | Energy | 2025 |
| Target Housing Limited | Hospitality | 1993 |
| Tarik and Co Ltd | Health & social care | 2025 |
| Tariq Funeral Service Ltd | Other services | 2021 |
| Tasca, Tavern & Vinho Ltd | Hospitality | 2026 |
| Tasha Hairs and African Food Ltd | Wholesale & retail | 2025 |
| Tashaenergy Properties Limited | Administrative & support | 2022 |
| Taste of China (LY) Limited | Hospitality | 2017 |
| Tator Ltd | Information & communication | 2021 |
| Taurus Passive Fire Protection Ltd | Other services | 2026 |
| Tavi & Sons Ltd | Transport & logistics | 2020 |
| Tavi&Bogdan Limited | Transport & logistics | 2017 |
| TAW Radford Holdings Limited | Professional & scientific | 2025 |
| Tawse Instrumentation Limited | Administrative & support | 2017 |
| Taxes Solutions Ltd | Professional & scientific | 2017 |
| Taxicode Direct Limited | Transport & logistics | 2023 |
| Taylor & Co Concrete Refurbishment Ltd | Manufacturing | 2025 |
| Taylor & Denton LOG Burners and Surrounds Ltd | Other services | 2025 |
| Taylor Made Construction (Yorkshire) Limited | Construction | 2025 |
| Taylor Taverns Ltd | Hospitality | 2023 |
| Taylor Tuxford Associates Ltd | Professional & scientific | 2009 |
| Taylor Wood Properties Limited | Real estate | 2024 |
| Taylor Woolhouse Holdings Limited | Wholesale & retail | 1973 |
| Taylor Woolhouse Limited | Wholesale & retail | 1999 |
| Taylored Mortgage and Protection Solutions Ltd | Financial services | 2023 |
| Taylormade Smart Homes Ltd | Administrative & support | 2023 |
| Taylorproducts Ltd | Manufacturing | 2024 |
| TB Coaching Limited | Education | 2026 |
| TBA Commercial Ltd | Real estate | 2025 |
| Tbcorals Ltd | Wholesale & retail | 2026 |
| TBG Business Solutions Ltd | Information & communication | 2025 |
| TBP Hockley Ltd | Hospitality | 2022 |
| TC Barnsley Limited | Hospitality | 2018 |
| TC Emery Transport Ltd | Transport & logistics | 2014 |
| TC Sanderson Limited | Administrative & support | 2012 |
| Tcab Trading Limited | Hospitality | 2025 |
| Tdaa Ltd | Wholesale & retail | 2025 |
| Tdavies Utilities Ltd | Water & waste | 2014 |
| TDE Property Management Ltd | Real estate | 2023 |
| TDT Joinery Limited | Construction | 2026 |
| Teach HQ Ltd | Education | 2022 |
| Team Lvfit Coaching Limited | Arts & recreation | 2022 |
| Team MBM Coaching Ltd | Arts & recreation | 2020 |
| Team MBM Online Ltd | Arts & recreation | 2020 |
| Team O Solutions Limited | Arts & recreation | 2003 |
| Team Renewables Ltd | Construction | 2020 |
| Team Williams Driving School Limited | Education | 2025 |
| Tecdev Services Ltd | Information & communication | 2016 |
| Tech & Mend Limited | Wholesale & retail | 2025 |
| Tech 2 Citroen Peugeot Specialist Limited | Wholesale & retail | 2020 |
| Tech and Tuch Ltd | Wholesale & retail | 2026 |
| Tech N Solutions Limited | Wholesale & retail | 2025 |
| Tech-Elec Ltd | Professional & scientific | 2024 |
| Techni - Tile Limited | Construction | 2019 |
| Technical Cranes Group Ltd | Manufacturing | 2026 |
| Technical Cranes Limited | Manufacturing | 1981 |
| Technical Developments (Northern) Ltd | Construction | 2021 |
| Technical Print Limited | Manufacturing | 2003 |
| Technokids.Fun Ltd | Information & communication | 2022 |
| Techsteel Solutions Limited | Manufacturing | 2025 |
| TED Accountants Ltd | Health & social care | 2025 |
| Teddy and the FOX Group Ltd | Real estate | 2025 |
| Teddy Treasures Ltd | Wholesale & retail | 2026 |
| Teedee-Bams Events Ltd | Hospitality | 2026 |
| Tee’S & Zee’S Ltd | Wholesale & retail | 2025 |
| Tegworth Property Services Limited | Real estate | 2019 |
| Tehillah Properties Limited | Real estate | 2024 |
| TEK Autos Ltd | Wholesale & retail | 2017 |
| Tek's Academy Ltd | Arts & recreation | 2023 |