| Tiffany & Co. LtdUnited Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2007 |
| Tigella LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2023 |
| Tila London LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2020 |
| Tileyard Records LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2022 |
| Timac Agro UK LimitedHarpenden, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2009 |
| Time Products LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1931 |
| Timothy Hatton Architects LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1990 |
| Tinfinity LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2017 |
| Tissot Industry UK LimitedCroydon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2017 |
| Titanic Wines LimitedBushmills, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2017 |
| Tocqueville Library LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2020 |
| Top Spirits LtdLeicester, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2012 |
| Tpt LimitedMarlow, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2000 |
| Transforming Surfaces LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2022 |
| Translift Bendi LtdRedditch, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1965 |
| Tratos LimitedPrescot, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1980 |
| Tres Maestros LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2020 |
| Tri-Circle Food LimitedWembley, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2006 |
| Trillium Property Services LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1998 |
| Trivia Wines LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2020 |
| Troia Restaurants LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2013 |
| Trousset Fawcett LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2011 |
| Truefoods LimitedMelmerby, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2006 |
| Trust Systems LimitedCirencester, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2006 |
| Tsa International LtdSpalding, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2007 |
| Tsg Consumer UK LLPMayfair, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2019 |
| Turner Broadcasting System Europe LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1985 |
| Ty Danjuma Family Office LtdEsher, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2009 |
| UK & Ireland Fuel Distributors Associati On LimitedNorthwich, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1997 |
| Ugf Catering LimitedSaxmundham, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2018 |
| Uisce Ard LtdHertford, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2008 |
| Ukfast.net LimitedManchester, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1999 |
| Ulma Packaging LtdSheffield, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2002 |
| Ungrateful Grandkids LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2022 |
| United Agents LLPLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2022 |
| United Flow LtdWest Drayton, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2013 |
| Uokka LtdBellshill, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2016 |
| Upl Europe LtdWarrington, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1993 |
| Urban Initiatives LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2016 |
| Valueaccess LtdLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2025 |
| Valves Instruments Plus LtdManchester, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1985 |
| Veblen Wines LtdGloucester, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2008 |
| Venture Life Healthcare LimitedBracknell, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2005 |
| Verheyen LimitedLondon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2018 |
| Verre Anglais LimitedLondon, United Kingdom · UKverreanglais.com · checked 2 Nov 2026 | UK | 1 | – | – | – | – | 2015 |
| Vertical Aerospace Group LtdBristol, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2020 |
| Vg & S LimitedWatford, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2019 |
| Vg International Trading LimitedBracknell, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2010 |
| Vi Spring LtdDevon, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 1901 |
| Victus Emporium LimitedBristol, United Kingdom · UKchecked 2 Nov 2026 | UK | 1 | – | – | – | – | 2021 |