| Taste Roots Ltd | Wholesale & retail | 2025 |
| Tastebuds Services Ltd | Hospitality | 2023 |
| Tastie Buds Limited | Hospitality | 2025 |
| Tasty Crunch Limited | Hospitality | 2024 |
| Tastyco Foods Ltd | Wholesale & retail | 2025 |
| Tattoos of Enfield Ltd | Other services | 2026 |
| Tattoos of Watford Ltd | Other services | 2026 |
| TAURUS11 Ltd | Real estate | 2021 |
| Taverna Mandrelor Ltd | Hospitality | 2025 |
| Tavisa Holdings Limited | Real estate | 2024 |
| Tavisa Ltd | Real estate | 2013 |
| Tavk International Limited | Wholesale & retail | 2006 |
| Tax Concept Ltd. | Professional & scientific | 2014 |
| Taxable Limited | Professional & scientific | 2004 |
| Taxatoru a LU Iepure Limited | Wholesale & retail | 2025 |
| Taxcare Accountants Ltd | Professional & scientific | 2008 |
| Taxfin Limited | Professional & scientific | 2025 |
| Taxido Inc Limited | Professional & scientific | 2025 |
| Taxpro Accountants Ltd | Professional & scientific | 2011 |
| Taxrobin Limited | Information & communication | 2020 |
| TAY Developments & Investments Group Ltd. | Real estate | 2018 |
| TAY Developments (Crouch END) Ltd. | Construction | 2024 |
| TAY Developments (Harlow) Ltd | Real estate | 2025 |
| TAY Developments (Wimbledon) Ltd. | Construction | 2023 |
| TAY Residential & Commercial Ltd. | Real estate | 2018 |
| TAY Rooftop Developments (Biskra) Ltd. | Construction | 2023 |
| TAY Rooftop Developments Ltd | Real estate | 2020 |
| Taylist Media Limited | Information & communication | 2008 |
| Taylodge Limited | Real estate | 1968 |
| Taylor Small Limited | Professional & scientific | 2015 |
| Taylor Woodrow Construction | Construction | 1996 |
| Taylor Woodrow Infrastructure Limited | Construction | 2022 |
| Taylor Woodrow Management Limited | Professional & scientific | 1984 |
| Taylors Property Services Limited | Construction | 1993 |
| Taymo Education Ltd | Education | 2019 |
| TAZ NAZ Limited | Real estate | 2024 |
| TBG NO 3 Limited | Administrative & support | 2024 |
| Tbhi Ltd | Wholesale & retail | 2014 |
| TBM Trading Limited | Wholesale & retail | 2019 |
| TBN Network Ltd | Information & communication | 2026 |
| Tbos Contracting Solutions Limited | Administrative & support | 2009 |
| TBS Tryst Ltd | Wholesale & retail | 2024 |
| TC Changes Ltd | Education | 2011 |
| TC Railform Ltd | Construction | 2025 |
| TCC CH Ltd | Arts & recreation | 2026 |
| TCC Head Office Ltd | Arts & recreation | 2026 |
| TCC VY Ltd | Arts & recreation | 2026 |
| TCG Advisory Limited | Professional & scientific | 2018 |
| Tchc Group Limited | Professional & scientific | 2004 |
| Tchc Opportunities for ALL CIC | Administrative & support | 2011 |
| Tcru Limited | Information & communication | 2018 |
| TCT Services Ltd | Construction | 2024 |
| Tdmarketing Limited | Information & communication | 2023 |
| TDS Solutions Limited | Information & communication | 2008 |
| Team Adimudi Nadan Ltd | Hospitality | 2023 |
| Team Computers Limited | Wholesale & retail | 2007 |
| Team Computing Limited | Wholesale & retail | 2007 |
| Team Gladiators Cricket Club Ltd | Arts & recreation | 2022 |
| Team Group London Ltd | Construction | 2022 |
| Team Group Properties Ltd | Real estate | 2026 |
| Team Hammond Ltd | Information & communication | 2022 |
| Team Jamble Ltd | Information & communication | 2016 |
| Team Phoenix Nutrition Ltd | Arts & recreation | 2024 |
| Teamjia Limited | Arts & recreation | 2019 |
| Teasco Limited | Hospitality | 2022 |
| Tech Influence Ltd | Information & communication | 2017 |
| Tech Refresh Specialist Limited | Wholesale & retail | 2025 |
| Tech Repairs Loughton Limited | Other services | 2022 |
| Tech Supply Direct Ltd | Wholesale & retail | 2016 |
| Tech Unique Consultancy Limited | Information & communication | 2018 |
| Tech X Audio Ltd | Information & communication | 2010 |
| Techehealth Ltd | Professional & scientific | 2022 |
| Techna International Limited | Wholesale & retail | 1957 |
| Techna(Gt.Britain)Limited | Professional & scientific | 1945 |
| Techne Engineering Ltd | Professional & scientific | 2019 |
| Technesys Limited | Information & communication | 2023 |
| Technical Moulding Projects Limited | Manufacturing | 2004 |
| Technical Support & Systems Limited | Information & communication | 1998 |
| Technicomp UK Limited | Information & communication | 1997 |
| Technoautic Limited | Information & communication | 2025 |
| Technoer Limited | Construction | 2021 |
| Technofacts Solutions Ltd | Information & communication | 2014 |
| Technoinfra Consulting Limited | Information & communication | 2026 |
| Technoinfra Limited | Information & communication | 2016 |
| Technology Business Solutions Ltd | Information & communication | 2023 |
| Technology House Investment Limited | Real estate | 2019 |
| Technology Within Limited | Information & communication | 2006 |
| Technoloj Ltd | Information & communication | 2024 |
| Technotronix Ltd | Wholesale & retail | 2018 |
| Technoway Ltd | Information & communication | 2013 |
| Techoriel Ltd | Information & communication | 2010 |
| Techsis Solutions Ltd | Information & communication | 2015 |
| Techspire Innovations Limited | Information & communication | 2025 |
| Techvology Marketing Ltd | Professional & scientific | 2020 |
| Techwit Business Solutions Limited | Wholesale & retail | 2022 |
| Techx Ltd | Information & communication | 2022 |
| Tectrons Ltd | Information & communication | 2016 |
| Tectum Building Services Limited | Construction | 2007 |
| Tectum Limited | Construction | 2002 |
| TED LEE Enterprises Limited | Transport & logistics | 1997 |