| THE Fragrance Beauty Limited | Other services | 2025 |
| THE Fremont Bar Limited | Extraterritorial | 2023 |
| THE Gesher Assessment Centre Ltd | Education | 2022 |
| THE Gesher Trust | Education | 2014 |
| THE GET Well Clinics Limited | Health & social care | 2023 |
| THE Giulietta Club Limited | Other services | 2008 |
| THE Good Design Practice Ltd | Professional & scientific | 2023 |
| THE Guild of Construction Workers Limited | Administrative & support | 2001 |
| THE Hair & Face Place Limited | Other services | 2003 |
| THE Hanover Gallery Ltd | Wholesale & retail | 2022 |
| THE Harrodian Library Publications Limited | Information & communication | 1998 |
| THE Harrodian School Limited | Education | 1993 |
| THE Harrow Academies Trust | Education | 2014 |
| THE Henley Medical Group Ltd | Health & social care | 2020 |
| THE HHC Partnership Ltd | Professional & scientific | 2012 |
| THE Humidor Limited | Wholesale & retail | 2025 |
| THE Implant Company Limited | Financial services | 2016 |
| THE Innovative Times Ltd | Professional & scientific | 2025 |
| THE International Association of Shiprepair Agents | Other services | 2003 |
| THE KB Brothers Limited | Real estate | 2019 |
| THE Kensington Construction Company Ltd | Construction | 2010 |
| THE Learning Tree Childcare Limited | Education | 2007 |
| THE Leicester One (Students) Ltd | Hospitality | 2021 |
| THE Leicester Studios Ltd | Real estate | 2021 |
| THE Letchworth Club Limited | Arts & recreation | 2018 |
| THE Life Care Centre Limited | Administrative & support | 2003 |
| THE London BEE Company Limited | Agriculture & fishing | 2012 |
| THE London Knowledge Production Company Limited | Information & communication | 2014 |
| THE London Nail Laser Clinic Limited | Health & social care | 2009 |
| THE London Sleep Apnoea Clinic LLP | | 2026 |
| THE Look Management Limited | Other services | 2017 |
| THE Magic Torch Digital Ltd | Professional & scientific | 2006 |
| THE Makers Room CIC | Education | 2026 |
| THE Mayfair General Practice Ltd | Health & social care | 2019 |
| THE Merlin School Limited | Other services | 1994 |
| THE Mindful Editions Ltd | Information & communication | 2021 |
| THE Ministers of Change Ltd | Professional & scientific | 2024 |
| THE MIX Management Company Ltd | Professional & scientific | 2015 |
| THE Montessori Circle Ltd | Education | 2022 |
| THE Moriah Legacy Trust | Administrative & support | 1996 |
| THE NET4BUSINESS Limited | Information & communication | 2002 |
| THE New Muscovy Company Limited | Wholesale & retail | 1998 |
| THE O Group (London) Limited | Real estate | 2025 |
| THE Olive Tree (Arcos) Limited | Financial services | 2011 |
| THE One Private Ltd | Professional & scientific | 2025 |
| THE One the Only Ltd | Financial services | 2020 |
| THE Original Fatboy Ltd | Professional & scientific | 2011 |
| THE Pank International Limited | Real estate | 2022 |
| THE Pinner Village Store Limited | Wholesale & retail | 2023 |
| THE Pitch & Growth Coach Company Ltd | Other services | 2024 |
| THE Planning Studio Limited | Professional & scientific | 2024 |
| THE POP Art Collective Ltd | Arts & recreation | 2014 |
| THE Rekt Company Limited | Professional & scientific | 2025 |
| THE Room Edit Ltd | Professional & scientific | 2025 |
| THE Rules of Golf Vintage Limited | Wholesale & retail | 2026 |
| THE SET Group Limited | Hospitality | 2024 |
| THE SET Hotels Management Company Limited | Hospitality | 2016 |
| THE Shed London Landscape Ltd | Administrative & support | 2018 |
| THE Social Work Collaborative Ltd | Health & social care | 2025 |
| THE Specs Factory Outlet Ltd | Wholesale & retail | 2009 |
| THE Submarine Leadership Company Limited | Professional & scientific | 2004 |
| THE Success Agents Limited | Professional & scientific | 2008 |
| THE Supply Cube Limited | Wholesale & retail | 2020 |
| THE Thinking Space Psychology Service Ltd | Health & social care | 2006 |
| THE Unicorn PUB & Dining Ltd | Hospitality | 2023 |
| THE Unplugged EAR Ltd | Health & social care | 2022 |
| THE Wealth Within HER Ltd | Health & social care | 2025 |
| THE Wern Ltd | Professional & scientific | 2014 |
| THE West House and Heath Robinson Museum Trust | Arts & recreation | 2001 |
| THE World Tribal Alliance C.I.C. | Professional & scientific | 2024 |
| Themis Brooks Ltd | Professional & scientific | 2024 |
| Theo & Adam Properties Ltd | Administrative & support | 2015 |
| Thepropertyladder Ltd | Real estate | 2022 |
| Thermoclad Limited | Construction | 2015 |
| Think Forward Holdings Limited | Extraterritorial | 2016 |
| Think Forward Property Limited | Real estate | 2022 |
| Think Gizmos Ltd | Wholesale & retail | 2024 |
| Thinkers Table Ltd | Professional & scientific | 2026 |
| Thinkingslimmer Ltd | Health & social care | 2005 |
| Thinkmore Healthcare Limited | Wholesale & retail | 2017 |
| Thiruppugalnesan Ltd | Administrative & support | 2025 |
| This Way Forward to Business Limited | Administrative & support | 2018 |
| Thorium Construction Limited | Construction | 2020 |
| Thrapston Healthcare Limited | Wholesale & retail | 2025 |
| THRIV3 Group Initiative Limited | Wholesale & retail | 2020 |
| Thrive IT Systems Ltd | Professional & scientific | 2019 |
| Thumbs UP AV Ltd | Construction | 2026 |
| Thursday Learning Club Ltd | Information & communication | 2025 |
| TIA Retail Limited | Wholesale & retail | 2019 |
| Tiadyl Consulting Limited | Professional & scientific | 2022 |
| Tiadyl Properties Ltd | Real estate | 2022 |
| Tibo Asia Limited | Wholesale & retail | 2025 |
| Ticco Limited | Manufacturing | 2024 |
| Tierra Business Solutions Limited | Administrative & support | 2013 |
| Tiger Thukash 2 Limited | Wholesale & retail | 2025 |
| Tigerbay Palace Limited | Hospitality | 2021 |
| Tile Distributors Ltd | Construction | 2019 |
| Tilehurst Partners Limited | Health & social care | 2025 |
| Tiles Haven Limited | Construction | 2025 |
| Tiles Styling Ltd | Construction | 2019 |