| Tekna Search Ltd | Administrative & support | 2019 |
| Tele Construction Limited | Construction | 2023 |
| Telecom Rigging Installations Limited | Information & communication | 2013 |
| Teleonixs Limited | Information & communication | 2026 |
| Temec Limited | Health & social care | 2021 |
| Temitope Ajagbe Limited | Wholesale & retail | 2020 |
| Temnash Assessments Limited | Health & social care | 2025 |
| Tempest Medical Limited | Health & social care | 2016 |
| Template Factory Limited | Wholesale & retail | 2025 |
| Temple & Temple Properties Ltd | Real estate | 2015 |
| Tenderbase Ltd | Information & communication | 2023 |
| Tenoric Ltd | Health & social care | 2025 |
| Tenworld Limited | Manufacturing | 1991 |
| TEO Hair Ltd | Other services | 2018 |
| Teqconnect Limited | Information & communication | 2024 |
| Tern Heads Ltd | Professional & scientific | 2019 |
| Terra Connect Ltd | Wholesale & retail | 2020 |
| Terra Farmer Limited | Hospitality | 2013 |
| Terry Homes Ltd | Real estate | 2025 |
| Terry's Iconik Landscapes Limited | Administrative & support | 2020 |
| Testing Minds Limited | Information & communication | 2018 |
| Tetelestae Ltd | Health & social care | 2024 |
| TF Maintenance & Refurbishments Limited | Construction | 2016 |
| Tfclose Limited | Wholesale & retail | 2026 |
| TFG (Eastern) Limited | Professional & scientific | 2014 |
| TFM (South East) Ltd | Administrative & support | 2015 |
| Tfmce Limited | Professional & scientific | 2026 |
| Tfog Limited | Administrative & support | 2024 |
| TG Global Beauty Projects Limited | Other services | 2024 |
| TGI Railway Limited | Other services | 2017 |
| Thakar Properties Ltd | Real estate | 2024 |
| Thaker Holdings Ltd | Extraterritorial | 2013 |
| Thambi Raga Properties Limited | Real estate | 2026 |
| Thames Energy Limited | Construction | 1988 |
| Thames Workforce Ltd | Administrative & support | 2025 |
| Thameside Haulage and Logistics Limited | Transport & logistics | 2026 |
| Thamestronic Limited | Manufacturing | 2009 |
| That JAM Films Limited | Other services | 2018 |
| Thatha Properties Ltd | Real estate | 2025 |
| Thch Ltd | Professional & scientific | 2021 |
| THE Abacus Group Ltd | Other services | 2023 |
| THE Accounting Student Limited | Education | 2019 |
| THE Adamah Ltd | Real estate | 2022 |
| THE Agriculture Corporation Ltd | Real estate | 2017 |
| THE AID Group Limited | Professional & scientific | 2007 |
| THE Alkemistry Limited | Wholesale & retail | 2014 |
| THE Anchor Services -Semi Independent Living Ltd | Health & social care | 2018 |
| THE Assistant Room Ltd | Information & communication | 2016 |
| THE Baller Group Limited | Administrative & support | 2015 |
| THE Basildon Academies | Education | 2007 |
| THE Berrys Carehome Limited | Health & social care | 2017 |
| THE Big Heart Healthcare Solutions Ltd | Health & social care | 2022 |
| THE Blindsmith Ltd | Construction | 2019 |
| THE Bodyworkz Studio Ltd | Wholesale & retail | 2021 |
| THE Bones Yard Limited | Extraterritorial | 2024 |
| THE Booknut Ltd | Wholesale & retail | 2026 |
| THE Borough Barista Limited | Hospitality | 2011 |
| THE Boundary Co Ltd | Hospitality | 2018 |
| THE Box Events Entertainment Limited | Other services | 2019 |
| THE Brass Smith Ltd | Professional & scientific | 2016 |
| THE Bread Shop Ltd | Manufacturing | 2026 |
| THE Breathing Tree Group Ltd | Administrative & support | 2022 |
| THE Bubble Box Ltd | Hospitality | 2022 |
| THE Buddha Sanctuary Retreat Ltd | Other services | 2024 |
| THE Buddha Sanctuary Spa Ltd | Other services | 2021 |
| THE Charman Group Limited | Professional & scientific | 2019 |
| THE Chesterford Group Limited | Financial services | 2012 |
| THE Classic Sign Company Limited | Manufacturing | 1988 |
| THE Cock's Tail Limited | Extraterritorial | 2011 |
| THE Construction Management Academy Ltd | Professional & scientific | 2023 |
| THE Cook Collective CIC | Wholesale & retail | 2025 |
| THE Coriander (Basildon) Limited | Hospitality | 2012 |
| THE Coriander (Essex) Ltd | Hospitality | 2023 |
| THE Cricket Farm Ltd | Wholesale & retail | 2025 |
| THE Crystal Willow Gifts Ltd | Wholesale & retail | 2023 |
| THE Cultured Pearl Co. Limited | Wholesale & retail | 2007 |
| THE Custom Clubhouse Ltd | Wholesale & retail | 2025 |
| THE Darts Hub Ltd | Wholesale & retail | 2025 |
| THE Divine Alchemist Supplements Ltd | Wholesale & retail | 2020 |
| THE Essex Car Group Limited | Wholesale & retail | 2017 |
| THE Essex Room Project Ltd. | Construction | 2018 |
| THE Essex Way Clinic Ltd | Other services | 2024 |
| THE European Academy of Management Limited | Education | 2019 |
| THE Eyna Limited | Hospitality | 2024 |
| THE FAB Pizza (Kent) Limited | Hospitality | 2021 |
| THE Face Painting Shop Limited | Wholesale & retail | 2014 |
| THE Factory Shops (Essex) Limited | Wholesale & retail | 1986 |
| THE Falzon Group Limited | Real estate | 2025 |
| THE Fence and Garden Co, Ltd | Administrative & support | 2025 |
| THE Fish Speaks Limited | Information & communication | 2016 |
| THE Fit LAB 2 Ltd | Arts & recreation | 2022 |
| THE Fit LAB Essex Ltd | Arts & recreation | 2021 |
| THE Flex Youth and Community Group CIC | Information & communication | 2023 |
| THE Flying Trowel Ltd | Construction | 2025 |
| THE Ford Cortina Mkii & 1600E Owners' Club Limited | Other services | 2003 |
| THE Garden Designer Ltd | Administrative & support | 2021 |
| THE Garden Training Company Ltd | Administrative & support | 2011 |
| THE GAS King Essex Ltd | Manufacturing | 2023 |
| THE Gera Transport Ltd | Transport & logistics | 2024 |
| THE Glory Conference Ltd | Other services | 2023 |