| Tenacity Works Ltd | Administrative & support | 2013 |
| Tenandtwelve Properties Ltd. | Households | 2007 |
| Tender Touch Care Limited | Health & social care | 2016 |
| Tensilo Limited | Financial services | 2019 |
| Tento Business Holdings Ltd | Professional & scientific | 2024 |
| Term Rentals Limited | Professional & scientific | 1974 |
| Term Space Limited | Professional & scientific | 1987 |
| Termspan Limited | Professional & scientific | 1989 |
| Terra Mater-Uma Ltd | Administrative & support | 2026 |
| Terra Nova Magazines Ltd | Administrative & support | 2016 |
| Terrier Property Services Ltd | Administrative & support | 2012 |
| TES Bailey Consulting Ltd | Professional & scientific | 2025 |
| TES Bailey Group Ltd | Professional & scientific | 2026 |
| TES Engineering Solutions Ltd | Energy | 2019 |
| TES Innovations Ltd | Wholesale & retail | 2023 |
| Tesora Technology Services Ltd | Other services | 1989 |
| Tessellated Industries Ltd | Professional & scientific | 2020 |
| Tester Mind Ltd | Information & communication | 2022 |
| TG Investments Limited | Financial services | 2012 |
| TGB Scaffolding Limited | Construction | 2025 |
| Thalia Erodotou Limited | Wholesale & retail | 2010 |
| Tharsan Ltd | Wholesale & retail | 2022 |
| THE Applied Strategist Ltd | Information & communication | 2026 |
| THE Architecture Foundation | Other services | 1991 |
| THE Art of Moving Limited | Professional & scientific | 2002 |
| THE Aspirational Group Ltd | Hospitality | 2013 |
| THE Athlete Pivot Project CIC | Education | 2026 |
| THE Atlas Works Homewares Ltd | Wholesale & retail | 2017 |
| THE Atrium Apartments Management Company Limited | Administrative & support | 2012 |
| THE Barber Box Herts Ltd | Other services | 2026 |
| THE Beauty Boudoir Limited | Other services | 2007 |
| THE Bluerose Building Company Limited | Construction | 2015 |
| THE Boring Vape Company Ltd | Wholesale & retail | 2017 |
| THE Brain Fit Consultancy Limited | Administrative & support | 2021 |
| THE Buildout Group Ltd | Other services | 2023 |
| THE Business Growth Academy Group Ltd | Professional & scientific | 2025 |
| THE Cedars (Barleythorpe) Management Company Limited | Households | 2018 |
| THE City Plumbing & Heating Co. (1991) Limited | Construction | 1991 |
| THE Concrete Consultancy 2000 Limited | Construction | 2000 |
| THE Crown Street Practice Limited | Health & social care | 2014 |
| THE Dronfield Group Limited | Financial services | 2025 |
| THE Effects Syndicate Ltd | Information & communication | 2023 |
| THE Electricshop (London) Limited | Extraterritorial | 2015 |
| THE Ethical Wealth Project Limited | Financial services | 2021 |
| THE Face Atelier Ltd | Other services | 2022 |
| THE Fresh Bean Trading Company Ltd | Wholesale & retail | 2021 |
| THE FX Syndicate Ltd | Information & communication | 2026 |
| THE Gemma Davison Academy Ltd | Arts & recreation | 2014 |
| THE Gentry Marlow Limited | Other services | 2023 |
| THE Gold Leaf Music Library Limited | Information & communication | 2010 |
| THE Great British Teddy Bear Company Limited | Financial services | 2017 |
| THE Greek Counter Ltd | Hospitality | 2026 |
| THE Greene Partnership LLP | | 2011 |
| THE Henry Fanshawe Group Limited | Extraterritorial | 2025 |
| THE Hertford Car Company Ltd | Wholesale & retail | 2012 |
| THE Hillbury Press Limited | Manufacturing | 2003 |
| THE Hotel Sarathi Nepal (UK) Limited | Hospitality | 2025 |
| THE Independent Flooring Group Limited | Construction | 2022 |
| THE Itsy Bitsy Wardrobe Ltd | Wholesale & retail | 2024 |
| THE Junior Virtual Office Limited | Information & communication | 2020 |
| THE Kersey Group Ltd | Real estate | 2022 |
| THE Kitchen and Bedroom People Ltd | Construction | 2024 |
| THE Landscape Studio Ltd | Administrative & support | 2011 |
| THE Lawns (Shenley) Management Limited | Households | 1997 |
| THE Legacy Globe Ltd | Administrative & support | 2021 |
| THE Limes Great Cornard (Management Company) Limited | Households | 2021 |
| THE Lion Hotels Group Holdings Limited | Hospitality | 2024 |
| THE Lion Hotels Group Limited | Hospitality | 2024 |
| THE Little Green Partnership Ltd | Hospitality | 2020 |
| THE London Loft Family Ltd | Construction | 2023 |
| THE Look UP Project Limited | Information & communication | 2019 |
| THE LOW Music Ltd | Information & communication | 2022 |
| THE Lucia Ltd | Real estate | 2026 |
| THE Machine Market Limited | Information & communication | 2023 |
| THE Management Office Limited | Real estate | 2000 |
| THE Maples EN7 Residents Limited | Real estate | 2007 |
| THE Marquee Group Limited | Construction | 2021 |
| THE Meadows Bulmer Road Management Limited | Real estate | 2018 |
| THE MHM Nexus Ltd | Wholesale & retail | 2025 |
| THE Model Traitor Limited | Wholesale & retail | 2020 |
| THE Moonchild Apothecary Limited | Wholesale & retail | 2019 |
| THE Mosaic Collection Limited | Wholesale & retail | 2026 |
| THE Moule Partnership Limited | Construction | 2001 |
| THE Night IS Calling Events Limited | Arts & recreation | 2026 |
| THE Night IS Calling Records Limited | Information & communication | 2026 |
| THE Nodeco Limited | Wholesale & retail | 2025 |
| THE Only IT Solution Ltd | Information & communication | 2022 |
| THE Other Space-Bhp Limited | Arts & recreation | 2014 |
| THE Peachier Project Limited | Arts & recreation | 2025 |
| THE Playbook Group Ltd | Professional & scientific | 2025 |
| THE Plumber MAN Limited | Construction | 2009 |
| THE Powerhouse Protein Ltd | Hospitality | 2024 |
| THE Production Fixers Ltd | Information & communication | 2019 |
| THE Property Pro Group Ltd | Real estate | 2021 |
| THE Raphael Property Group Limited | Real estate | 2026 |
| THE Residence Hadham Road Management Company Limited | Households | 2019 |
| THE Senior Move Partnership Limited | Other services | 2012 |
| THE Simple Idea Limited | Information & communication | 2009 |
| THE Solar Bureau Ltd | Energy | 2015 |
| THE T&T Collective Limited | Professional & scientific | 2016 |