| THE Letterbox Consultancy Management Limited | Professional & scientific | 1995 |
| THE Loaded Nacho Shack Limited | Hospitality | 2026 |
| THE London Garden Design Studio Ltd | Administrative & support | 2025 |
| THE Lopping Endowment Corporate Trustee Limited | Arts & recreation | 2016 |
| THE Loughton Boiler Company Ltd | Construction | 2022 |
| THE Loughton Dental Centre Limited | Health & social care | 2007 |
| THE Loughton Window Company Limited | Construction | 2002 |
| THE Mellows Limited | Health & social care | 2003 |
| THE Modern Valve Radio Company Ltd | Professional & scientific | 2003 |
| THE Newsroom Limited | Information & communication | 2020 |
| THE Old Fashioned Football Shirt Co Limited | Manufacturing | 1998 |
| THE PE Train Limited | Education | 2023 |
| THE Pellet Guys Limited | Wholesale & retail | 2022 |
| THE Pinnaca Group Limited | Financial services | 2022 |
| THE Place Hair Ltd | Other services | 2016 |
| THE Property Club Holdings Limited | Construction | 2016 |
| THE Ridings (Snaresbrook) Management Company Limited | Real estate | 1995 |
| THE Roof Terrace Residents Association Limited | Households | 2007 |
| THE Rosen Consultancy Ltd | Financial services | 2013 |
| THE Rosner Foundation CIC | Real estate | 2025 |
| THE Salon Box Academy Ltd | Education | 2024 |
| THE Salon Box Ltd | Other services | 2023 |
| THE Salon Circle Ltd | Administrative & support | 2021 |
| THE Sealant Stick Ltd | Manufacturing | 2025 |
| THE Sign Emporium Limited | Manufacturing | 2016 |
| THE Stake House Limited | Professional & scientific | 2003 |
| THE Standing Heart Co. Ltd | Wholesale & retail | 2026 |
| THE Star Cricket Academy Ltd | Administrative & support | 2014 |
| THE Street Bistro & Cafe Ltd | Hospitality | 2024 |
| THE Strength Formula Limited | Education | 2025 |
| THE Suffolk Pizza Co. Ltd | Hospitality | 2024 |
| THE Support Shift Ltd | Extraterritorial | 2025 |
| THE Swansea Jack Tavern Ltd | Hospitality | 2025 |
| THE T Parlour Limited | Other services | 2023 |
| THE Telugu Table Limited | Hospitality | 2026 |
| THE Thrift Motel Ltd. | Wholesale & retail | 2020 |
| THE Tuscany Restaurant Ltd | Hospitality | 2000 |
| THE Two Saints Management Company Limited | Households | 1990 |
| THE Vape Shed Ltd | Wholesale & retail | 2019 |
| THE Wagon Boulangerie Loughton Ltd | Hospitality | 2022 |
| THE Wildheart Foundation CIC | Health & social care | 2023 |
| THE Wisehome Group Limited | Construction | 2023 |
| THE Women's Wellness Practitioner Limited | Health & social care | 2025 |
| THE Worlds Larder Ltd | Hospitality | 2006 |
| Theo Jones Recruitment Limited | Administrative & support | 2012 |
| Theodora Jory Ltd | Professional & scientific | 2025 |
| Thermaze Ltd | Professional & scientific | 2019 |
| Thermo-Pro Ltd | Construction | 2025 |
| Thestral Financial Services Ltd | Financial services | 2020 |
| Theydon Bower (Epping) Management Company Limited | Real estate | 1988 |
| Things of Internet Limited | Information & communication | 2015 |
| Third Scope Europe Ltd | Information & communication | 2023 |
| Third Southfleet Maintenance Limited | Households | 1963 |
| Thirty Thirty Three Ltd | Professional & scientific | 2025 |
| Thistle Photo Ltd | Professional & scientific | 2017 |
| Thistlegate Properties Limited | Real estate | 1995 |
| Thomas House Apartments Limited | Real estate | 2024 |
| Thorney Leys Developments Limited | Construction | 2017 |
| Thorntonrones Ltd | Professional & scientific | 2008 |
| Thorogood Design Ltd | Professional & scientific | 2024 |
| Thoughtful Wills & Estate Planning Ltd | Professional & scientific | 2025 |
| Thoughts & Scribbles Limited | Arts & recreation | 2014 |
| Thrale Almshouse and Relief in Need Charity Trustee Limited | Professional & scientific | 2012 |
| Threads Fashion Group Ltd | Professional & scientific | 2023 |
| Threads of Essex Limited | Wholesale & retail | 2014 |
| Three Core Group Ltd | Construction | 2021 |
| Three Red Hens LLP | | 2013 |
| Three X 8 Limited | Administrative & support | 2014 |
| Through the Fight Foundation | Health & social care | 2016 |
| TI Bikes Ltd | Wholesale & retail | 2012 |
| Ticktrade Solutions Ltd | Information & communication | 2025 |
| Tidy Touring Ltd | Arts & recreation | 2013 |
| Tidywork Studio Ltd | Information & communication | 2022 |
| Tier 1 Hniwealth Consulting Ltd | Financial services | 2020 |
| Tiffin Green Limited | Professional & scientific | 2013 |
| Tiffin Green Payroll Limited | Administrative & support | 1973 |
| Tiger Highways Limited | Professional & scientific | 2014 |
| Tilegate Developments Limited | Construction | 2020 |
| Tilegate Estates Limited | Real estate | 2019 |
| Tilley and Grace (Holdings) Limited | Financial services | 2020 |
| Tilley and Grace Limited | Wholesale & retail | 2014 |
| Tilly Powell Limited | Arts & recreation | 2017 |
| TIM Hancock Associates Limited | Real estate | 2002 |
| TIM Hancock Properties Limited | Real estate | 2005 |
| Timberas Ltd | Real estate | 2022 |
| Timeurban Residents Management Limited | Households | 1988 |
| Timurs Properties Limited | Real estate | 2022 |
| Tiny Champs Nursery Ltd | Health & social care | 2019 |
| Tiny Moons Limited | Information & communication | 2025 |
| Tiny Tummies Limited | Wholesale & retail | 2025 |
| Tiptop Media Management Ltd | Arts & recreation | 2001 |
| Tirona Construction Ltd | Construction | 2022 |
| Titan Refurbishments Limited | Construction | 1999 |
| Titan UK B.R. Ltd. | Extraterritorial | 2024 |
| Tiwana Estates Limited | Real estate | 2020 |
| TJ Aster Properties Ltd | Real estate | 2026 |
| TJB Fire Safety Ltd | Professional & scientific | 2019 |
| TJO Enterprises Ltd | Wholesale & retail | 2017 |
| TK Security Ltd | Administrative & support | 2022 |
| TKB Secure Limited | Administrative & support | 2025 |