| THE Portobello Arts Club Ltd | Professional & scientific | 2009 |
| THE Procurement Bureau Limited | Professional & scientific | 2014 |
| THE Professional Network Ltd | Professional & scientific | 2023 |
| THE Property Development Partnership Limited | Real estate | 2005 |
| THE Quadradum Ltd | Transport & logistics | 2023 |
| THE Quieter Place Limited | Real estate | 2023 |
| THE Rainbo Group Ltd | Hospitality | 2016 |
| THE Rangel Group Limited | Professional & scientific | 2022 |
| THE Red Rose Employment Agency Limited | Real estate | 2000 |
| THE Redeemed Christian Church of GOD More Than Conquerors | Other services | 2012 |
| THE Reset Room Club CIC | Education | 2026 |
| THE Roast Spot Ltd | Hospitality | 2023 |
| THE Role Play Haven CIC | Arts & recreation | 2015 |
| THE Rose LI School of Martial Arts Limited | Education | 2002 |
| THE Setup Home Company Ltd | Construction | 2026 |
| THE Shahdokht Ltd | Manufacturing | 2023 |
| THE Shaloe Group Ltd | Financial services | 2023 |
| THE Signlads Ltd | Manufacturing | 2025 |
| THE Social Media Cafe Ltd | Wholesale & retail | 2023 |
| THE Soho Social & Co Limited | Hospitality | 2023 |
| THE Soul Alchemy LLP | | 2026 |
| THE Stained Glass Window Company Limited | Construction | 2018 |
| THE Station Tavern Ltd | Construction | 2024 |
| THE Style Councillors Ltd | Arts & recreation | 2019 |
| THE Sweet World 2015 Limited | Other services | 2015 |
| THE Swim Vault Ltd | Education | 2023 |
| THE Tailored Tree Ltd | Professional & scientific | 2025 |
| THE Tasker Group Limited | Financial services | 2016 |
| THE Teaching Couple Ltd | Information & communication | 2026 |
| THE Tiny EAR Card Company Ltd | Real estate | 2020 |
| THE TIP to TOE EA Nail Limited | Other services | 2023 |
| THE Topkapi (Kent) Limited | Hospitality | 2019 |
| THE Trash Store Ltd | Wholesale & retail | 2020 |
| THE Triple Muse CIC | Arts & recreation | 2025 |
| THE Tutoring Hub Ltd | Education | 2023 |
| THE Twelfth Enterprise Limited | Wholesale & retail | 2023 |
| THE UK Clearance and Removals Co. Ltd | Transport & logistics | 2025 |
| THE Univrsity Ltd | Information & communication | 2025 |
| THE Vanilla Alternative Ltd | Hospitality | 2011 |
| THE Varney Practice Enfield Limited | Health & social care | 2003 |
| THE Vireo Collective Ltd | Administrative & support | 2026 |
| THE Wanderlust Within Ltd | Information & communication | 2022 |
| THE Well [Lyrc] CIC | Other services | 2026 |
| THE Western Province Limited | Administrative & support | 2022 |
| THE Winners Group Ltd | Financial services | 2025 |
| THE World of Work Limited | Education | 2012 |
| The-Dins Limited | Real estate | 2022 |
| The-Servers Ltd | Information & communication | 2026 |
| Thebanyantree Limited | Information & communication | 2011 |
| Thebrooks Management Limited | Extraterritorial | 2008 |
| Thecurlsandco Ltd. | Other services | 2017 |
| Thedrinkexpress Limited | Wholesale & retail | 2012 |
| Thehomeshop UK Ltd | Wholesale & retail | 2021 |
| Thehsb Ltd | Real estate | 2021 |
| Theimperialsuite Ltd | Other services | 2023 |
| Themaninthesky Ltd | Professional & scientific | 2024 |
| Theophilus Legal Services Ltd | Professional & scientific | 2021 |
| Thermospray UK Limited | Construction | 2008 |
| Theta Networks Ltd | Information & communication | 2024 |
| Thetechuk Ltd | Other services | 2024 |
| Thevapeman Ltd | Wholesale & retail | 2024 |
| Theworldservers Limited | Wholesale & retail | 2013 |
| THI Kieu Trinh Hoang Limited | Other services | 2024 |
| Thinking Circle Limited | Information & communication | 2011 |
| Thinking OUT Loud Counselling Ltd | Health & social care | 2019 |
| Third Century Limited | Construction | 2009 |
| Thirty-Three Property Holdings Limited | Real estate | 2024 |
| Thomco Pubs Limited | Hospitality | 2026 |
| Thornbury Lodge Freehold Limited | Real estate | 2014 |
| Thornbury Lodge Management Company Limited | Real estate | 2003 |
| Thorndon Investments Ltd | Other services | 2013 |
| Thorne Park Cafe Limited | Hospitality | 2025 |
| Thorpe Coffee Kitchen Ltd | Hospitality | 2025 |
| Thousand Acres Estate Limited | Households | 2026 |
| Thousand Coffees Limited | Hospitality | 2026 |
| Thrassos Ltd | Construction | 2018 |
| Threadneedle House Management Company Limited | Financial services | 2017 |
| Threads Beauty Ltd | Other services | 2024 |
| Threads Global Ltd | Education | 2016 |
| Three C24 Ltd | Health & social care | 2013 |
| Three Capital Ltd | Professional & scientific | 2023 |
| Three Counties Garden and Leisure Buildings Limited | Wholesale & retail | 2000 |
| Three R Services Ltd | Manufacturing | 2015 |
| Three Sixty (Strategic Solutions) Limited | Professional & scientific | 2013 |
| Threezulus Ltd | Wholesale & retail | 2020 |
| Thsn Holdings Limited | Wholesale & retail | 2026 |
| THU DUC Limited | Other services | 2021 |
| THU Phan Limited | Other services | 2024 |
| Thuy ANH Limited | Other services | 2020 |
| Tiahappiah Support Ltd | Education | 2019 |
| Tialuna Limited | Real estate | 2021 |
| Tick Box Gifts Limited | Wholesale & retail | 2021 |
| Tick the Box Gifts Limited | Wholesale & retail | 2021 |
| Tide HR Ltd | Administrative & support | 2021 |
| Tidemoss Properties Limited | Extraterritorial | 1987 |
| Tidy Cleaners London Ltd | Administrative & support | 2025 |
| Tidy Gardeners Ltd | Administrative & support | 2022 |
| Tidy Properties Ltd | Administrative & support | 2020 |
| Tiege Consult Limited | Information & communication | 2022 |
| Tien Nail World Limited | Other services | 2023 |