| THE Luggage Enterprise Limited | Wholesale & retail | 2023 |
| THE Magic Stork CIC | Health & social care | 2023 |
| THE Manufacturing Corporation Ltd | Wholesale & retail | 2017 |
| THE Marathon Media Ltd | Wholesale & retail | 2020 |
| THE Mattress Vault Ltd | Wholesale & retail | 2025 |
| THE Mentor's & CO.1 Ltd | Education | 2025 |
| THE Mogul Restaurant Limited | Hospitality | 2002 |
| THE Nail Spa 26 Limited | Other services | 2023 |
| THE NET Venture Limited | Wholesale & retail | 2025 |
| THE New Dynasty CIC | Professional & scientific | 2025 |
| THE Old Rectory Property Company Limited | Real estate | 2013 |
| THE Olive Tree Keys Ltd | Real estate | 2025 |
| THE Peri Peri Box Ltd | Hospitality | 2020 |
| THE Poised Parlour Ltd | Other services | 2026 |
| THE Property Store Ltd | Real estate | 2018 |
| THE Real Couriers Ltd | Transport & logistics | 2014 |
| THE Redeemed Christian Church of GOD (the Fountain) | Other services | 2008 |
| THE Redeemed Christian Church of GOD Rivers of Joy Dagenham | Other services | 2015 |
| THE Risen Store Ltd | Wholesale & retail | 2024 |
| THE Rock London UK Ltd | Administrative & support | 2009 |
| THE Roll Club London Ltd | Hospitality | 2024 |
| THE Ronald’S Ltd | Manufacturing | 2025 |
| THE Rooms Agency Ltd | Real estate | 2015 |
| THE Scarlet Cord Ltd | Construction | 2025 |
| THE Stage Space Agency Ltd | Arts & recreation | 2024 |
| THE Student Consultants Limited | Professional & scientific | 2025 |
| THE Surgical Clinic Ltd | Health & social care | 2017 |
| THE Talking Way Ltd | Health & social care | 2021 |
| THE Tax Bros Ltd | Other services | 2019 |
| THE Technology Establishment Ltd | Wholesale & retail | 2017 |
| THE Thahid Group Ltd | Real estate | 2025 |
| THE Three Part Approach Journal Ltd | Information & communication | 2025 |
| THE Unique Clan Limited | Wholesale & retail | 2025 |
| THE Village Gathering Limited | Health & social care | 2026 |
| THE Village Project UK CIC | Education | 2025 |
| THE Vine Residential Services (Tvrs) Ltd | Health & social care | 2010 |
| THE Wellness Pharm London Ltd | Other services | 2026 |
| The.Sohaib Limited | Wholesale & retail | 2025 |
| Thebespokeliving Ltd | Transport & logistics | 2025 |
| Thebrymz Limited | Education | 2021 |
| Thecookieshopldn Limited | Hospitality | 2024 |
| Theemove Limited | Professional & scientific | 2023 |
| Theenailcouture Ltd | Other services | 2024 |
| Thekeralastore Ltd | Wholesale & retail | 2023 |
| Thekeydigital Ltd | Wholesale & retail | 2026 |
| Theodore Healthcare Ltd | Administrative & support | 2026 |
| Thepage Limited | Information & communication | 2015 |
| Thermora Ltd | Construction | 2026 |
| Theswingthing.Golf Ltd | Arts & recreation | 2025 |
| Think Finance CIC | Information & communication | 2024 |
| Think MO Ltd | Wholesale & retail | 2026 |
| Thirdborn Power Concepts Ltd | Construction | 2015 |
| Thirty Services Ltd | Administrative & support | 2025 |
| This IS Artisan Systems Ltd | Professional & scientific | 2025 |
| Thks Services Limited | Health & social care | 2024 |
| THL Engineering Limited | Construction | 2002 |
| Thornco Co. Ltd | Construction | 2008 |
| Thought Agile Learning Limited | Information & communication | 2018 |
| Thought Agile Limited | Information & communication | 2013 |
| Three Sigma Group Limited | Financial services | 2024 |
| Thrive Impact Hub CIC | Arts & recreation | 2026 |
| Thrive With Diabetes CIC | Health & social care | 2026 |
| THS Enterprises Ltd | Wholesale & retail | 2018 |
| THS SON Ltd | Wholesale & retail | 2026 |
| THT Construction Ltd | Construction | 2019 |
| Thunder Pizzas Limited | Hospitality | 2025 |
| Tickets to Train Limited | Education | 2023 |
| Tidy Lifestyle Limited | Administrative & support | 2025 |
| Tiendax Ltd | Wholesale & retail | 2025 |
| Tiffany Cake and Street Food Ltd | Hospitality | 2025 |
| Tiffany Portfolios Ltd | Households | 2025 |
| Tiger EYE Security Ltd | Administrative & support | 2020 |
| Tigerino Ltd | Real estate | 2019 |
| Tigris Digital Ltd | Information & communication | 2025 |
| Tijeru Limited | Construction | 2014 |
| Tiki Juice Bar Ltd | Other services | 2022 |
| TIL Tradersinloop Limited | Construction | 2025 |
| Timahdelite Services Ltd | Hospitality | 2026 |
| Time Sharpz Ltd | Wholesale & retail | 2025 |
| Time Traveller Courier Limited | Transport & logistics | 2020 |
| TIME4TRAVEL Ltd | Administrative & support | 2023 |
| Timeless Cleaning Services Ltd | Administrative & support | 2025 |
| Tingz Ltd | Wholesale & retail | 2021 |
| Tint Studio Ltd | Professional & scientific | 2021 |
| Tiny Home Investment Ltd | Real estate | 2021 |
| Tirvenk Technology Ltd | Information & communication | 2026 |
| Tizzil Ltd | Wholesale & retail | 2024 |
| TJ O'Brien Consultancy Limited | Administrative & support | 2025 |
| Tjmini's Company Limited | Transport & logistics | 2024 |
| TJR Services (UK) Limited | Administrative & support | 2019 |
| Tjsg Construction Ltd | Real estate | 2022 |
| TLD (UK) Ltd | Health & social care | 2013 |
| Tlogic Residentials Ltd | Real estate | 2023 |
| TM Cars INT Ltd | Wholesale & retail | 2021 |
| TM Telecoms & IT Solutions Ltd | Information & communication | 2020 |
| Tmax Ltd | Wholesale & retail | 2022 |
| TMD Trader Ltd | Wholesale & retail | 2026 |
| TMF Global Ltd | Wholesale & retail | 2024 |
| Tmhr Property Ltd | Real estate | 2016 |
| TMM Global Ltd | Administrative & support | 2022 |