| Trwy Container Ltd | Manufacturing | 2023 |
| TSA Properties (EST 2021) Limited | Real estate | 2021 |
| TSC Creative Ltd | Professional & scientific | 2026 |
| Tsingtuo Group Limited | Manufacturing | 2025 |
| Tsit Motors and Pumps Co., Ltd | Extraterritorial | 2016 |
| TSM Proinvest Ltd | Real estate | 2022 |
| TSP Auto Parts Co., Ltd | Extraterritorial | 2024 |
| TSS Industries Co., Limited | Manufacturing | 2018 |
| TT Skate Properties Limited | Real estate | 2010 |
| Ttlc International Co., Ltd | Wholesale & retail | 2020 |
| Ttofi Cakes Limited | Manufacturing | 2018 |
| Ttspiel International Co., Ltd | Extraterritorial | 2018 |
| Tubose Ltd | Extraterritorial | 2023 |
| Tukmak Ltd | Transport & logistics | 2012 |
| Tuneheat International Ltd | Wholesale & retail | 2015 |
| TUR FIX Ltd | Construction | 2026 |
| Turbotec (China) Services Ltd. | Manufacturing | 2026 |
| Turbotec Services Ltd. | Manufacturing | 2023 |
| Turing Meta Ltd | Professional & scientific | 2023 |
| Turnips Investments Ltd | Real estate | 2023 |
| Turtledove International Trade Co., Ltd | Wholesale & retail | 2024 |
| Tuten Limited | Real estate | 2016 |
| TV Londres Ltd | Information & communication | 2022 |
| Tvet UK Education Center Ltd | Administrative & support | 2022 |
| Twbe Limited | Construction | 2017 |
| TWC Electronics Co., Ltd | Wholesale & retail | 2025 |
| Twelve Four Studios Limited | Information & communication | 2018 |
| Twelvey Ltd | Extraterritorial | 2023 |
| Twenty Innovation. Ltd. | Manufacturing | 2025 |
| TWH Directors Limited | Extraterritorial | 2004 |
| TWH Secretaries Limited | Extraterritorial | 2004 |
| Twinkle Twinkle Little Star Co., Ltd. | Extraterritorial | 2021 |
| Twinkle Universal Group Company Limited | Wholesale & retail | 2024 |
| Twist DNA Ltd | Hospitality | 2024 |
| Twistround Limited | Information & communication | 2000 |
| Two-Ten Restaurant Limited | Hospitality | 2016 |
| Tworth Ltd | Extraterritorial | 2019 |
| TXY Gift Co., Ltd | Information & communication | 2021 |
| TYE Ltd | Real estate | 2018 |
| Typology Architects Limited | Professional & scientific | 2003 |
| Tytan Parts Co., Ltd | Wholesale & retail | 2022 |
| U Skat Property Limited | Wholesale & retail | 2021 |
| U&C Auto Parts Co., Limited | Extraterritorial | 2004 |
| U-Home International Ltd | Extraterritorial | 2010 |
| U-Keep Building & Construction Limited | Construction | 2015 |
| U-Key Pharmachem Co., Ltd | Extraterritorial | 2015 |
| U.K Fullward Intelligent Control Valve Manufacturing Ltd | Extraterritorial | 2019 |
| U.K. Beston International Group Ltd | Extraterritorial | 2008 |
| U.K. Elizabeth International Limited | Extraterritorial | 2004 |
| U.K. Golden FOX Fashion Limited | Professional & scientific | 2003 |
| U.K. Jorgecarli Limited | Extraterritorial | 2009 |
| U.K. Solford Chemistry International Group Limited | Extraterritorial | 2014 |
| Uboard Education Ltd | Education | 2020 |
| Ucds Limited | Professional & scientific | 2022 |
| UD Vester Transmission Co., Ltd | Manufacturing | 2025 |
| Udream Group Co., Ltd | Manufacturing | 2014 |
| UIA College of London Limited | Education | 2021 |
| UK Academy for International Top Talents Ltd | Professional & scientific | 2020 |
| UK Academy of Advanced Financial Research | Information & communication | 2023 |
| UK Adamson Share Limited | Manufacturing | 2025 |
| UK Addo Life Technologies Limited | Administrative & support | 2024 |
| UK Adolf International Group Co., Ltd. | Wholesale & retail | 2020 |
| UK Aenaeder Holdings Limited | Manufacturing | 2020 |
| UK Agro-Tech Chemgroup Ltd | Extraterritorial | 2022 |
| UK AI WO Feng International Group Crop Technology Ltd | Extraterritorial | 2019 |
| UK Aibang Crop Technology Co., Ltd | Manufacturing | 2025 |
| UK Aidrvi Holding Co., Ltd | Extraterritorial | 2021 |
| UK Ailise Biotechnology Trade Limited | Wholesale & retail | 2018 |
| UK Airtex Group Limited | Extraterritorial | 2010 |
| UK Alicia Trading Ltd | Manufacturing | 2024 |
| UK Alva Engineeering Limited | Extraterritorial | 2020 |
| UK Amani Food Holdings Limited | Extraterritorial | 2018 |
| UK Amino Chemistry Limited | Manufacturing | 2024 |
| UK Andaofu Chymistry Engineering Group Ltd | Extraterritorial | 2019 |
| UK Andaomaisi Agriculture Chymistry Ltd | Extraterritorial | 2020 |
| UK Andy Limited | Manufacturing | 2023 |
| UK Anhow International Group Co., Ltd | Manufacturing | 2022 |
| UK Anong Mige Special Fertilizer Ltd | Extraterritorial | 2021 |
| UK Aofa Mining Group Ltd | Extraterritorial | 2021 |
| UK Aoirdread Group Co., Ltd | Extraterritorial | 2022 |
| UK Aoldersion Technology Ltd | Manufacturing | 2021 |
| UK Aolifeng Agriculture Technology Co., Ltd | Extraterritorial | 2021 |
| UK Applewise Crop Protection Ltd. | Manufacturing | 2024 |
| UK APT Petrochemical International Group Limited | Extraterritorial | 2017 |
| UK Arcuni Fluid Control Group Limited | Extraterritorial | 2024 |
| UK Aritu International Limited | Professional & scientific | 2008 |
| UK Arnold Kang International Biological Research Limited | Extraterritorial | 2012 |
| UK Artaus Appliance Co. Ltd. | Manufacturing | 2025 |
| UK Asilikang Biology Technology Ltd | Extraterritorial | 2022 |
| UK Asud Industrial Group Ltd | Manufacturing | 2023 |
| UK Auva Certification Limited | Extraterritorial | 2020 |
| UK Avatar Giant Stone AS Energy Mining Co., Ltd | Agriculture & fishing | 2023 |
| UK Ayisha International Trading Limited | Wholesale & retail | 2023 |
| UK Babaoli Luxury Co., Limited | Extraterritorial | 2024 |
| UK Baby Time Ltd | Extraterritorial | 2016 |
| UK Badford Biological Co., Ltd. | Manufacturing | 2025 |
| UK Badigle Group Limited | Manufacturing | 2023 |
| UK Baez Group Limited | Extraterritorial | 2019 |
| UK Baldacci Group Ltd | Manufacturing | 2020 |
| UK Balpet BR Petroleum New Energy Co., Ltd | Extraterritorial | 2021 |