| Terra Scents Limited | Manufacturing | 2025 |
| Terra Steel Ltd | Wholesale & retail | 2026 |
| Terrence Ryan Consulting Limited | Professional & scientific | 2016 |
| Terry Bookers Limited | Wholesale & retail | 2009 |
| Terry Freedman Limited | Education | 2004 |
| Terry Snooks Limited | Administrative & support | 2016 |
| TES Enterprise Solutions Ltd | Wholesale & retail | 2012 |
| Tesh 1506 Limited | Health & social care | 2018 |
| Test Easily Ltd | Information & communication | 2017 |
| Texline Sourcing Limited | Administrative & support | 2015 |
| Textmagic Limited | Information & communication | 2004 |
| Textured Touch Hair and Beauty Ltd | Wholesale & retail | 2025 |
| TF Romford Ltd | Hospitality | 2026 |
| TFG Holdings Limited | Financial services | 2021 |
| TFS Bookkeeping Ltd | Professional & scientific | 2020 |
| Tfsa Holdings Ltd | Financial services | 2024 |
| TG Travel Limited | Administrative & support | 2026 |
| TG4 Group Management Ltd | Construction | 2020 |
| TG4 Scaffolding Ltd | Construction | 2020 |
| TGB Services Limited | Transport & logistics | 2017 |
| TGL Ductwork Services Ltd. | Energy | 2021 |
| Tgmds Limited | Professional & scientific | 2017 |
| TGT Holdings Limited | Financial services | 2023 |
| TH Drion Ltd | Wholesale & retail | 2025 |
| Thai Kitchen (Epping) Ltd | Hospitality | 2012 |
| Thai Kitchen (Essex) Ltd | Hospitality | 2016 |
| Thames Build UK Ltd | Construction | 2025 |
| Thames Business Consultancy Ltd | Wholesale & retail | 2022 |
| Thames Facilities Ltd | Professional & scientific | 2022 |
| Thameside Logistics Limited | Transport & logistics | 2018 |
| Thameside Properties Limited | Construction | 2020 |
| Thamesway Facilities Limited | Construction | 2025 |
| Thanaeri Care Services Ltd | Health & social care | 2024 |
| Thaniacaela Consulting Limited | Information & communication | 2013 |
| Tharcha Property Services Ltd | Real estate | 2024 |
| That Average JOE Limited | Wholesale & retail | 2025 |
| That Hair GUY Ltd | Information & communication | 2025 |
| THE Absorbeez Company Limited | Manufacturing | 2002 |
| THE Accountancy Franchise Ltd | Information & communication | 2022 |
| THE Accounting Solutions (GBR) Ltd | Professional & scientific | 2021 |
| THE Active Classroom Ltd | Education | 2019 |
| THE Aeron Cart Ltd | Wholesale & retail | 2026 |
| THE Apex Tribe Ltd | Wholesale & retail | 2020 |
| THE ARC Productions UN Limited | Information & communication | 2025 |
| THE Arcus Group Limited | Construction | 2021 |
| THE Asset Mgmt Group Ltd | Construction | 2025 |
| THE Association of Insurance Surveyors Limited | Other services | 1979 |
| THE Beaumont Property Services Ltd | Construction | 2024 |
| THE Beauty of Aesthetics Ltd | Other services | 2024 |
| THE Bejewelled Academy Ltd | Education | 2015 |
| THE Belly U.K Limited | Hospitality | 2021 |
| THE Belvedere Driving Range Limited | Wholesale & retail | 2008 |
| THE Bespoke Warehouse Ltd | Transport & logistics | 2024 |
| THE Big Apex Projects Ltd | Construction | 2024 |
| THE Big Jacota's Company Limited | Construction | 2019 |
| THE Blinds LAB Ltd | Construction | 2025 |
| THE Bloom Room Florist Limited | Wholesale & retail | 2018 |
| THE Blueprint International Ltd | Arts & recreation | 2025 |
| THE BM LAB Clinic Ltd | Health & social care | 2023 |
| THE Body MOD Ltd | Other services | 2026 |
| THE Boiler Change Experts Ltd | Construction | 2026 |
| THE Bond Street Practice Limited | Administrative & support | 2017 |
| THE BOW Store UK Ltd | Wholesale & retail | 2023 |
| THE Brewster Project Limited | Arts & recreation | 2019 |
| THE Brick Trader Ltd | Wholesale & retail | 2023 |
| THE Brothers Fish Ltd | Hospitality | 2019 |
| THE Business of Nora and BEN Ltd | Professional & scientific | 2018 |
| THE Buy and LET Team Ltd | Real estate | 2019 |
| THE Carers' Coaching Club (ELE) CIC | Education | 2023 |
| THE Ccci & Industry UK Ltd | Construction | 2026 |
| THE Cedar Therapy Clinic Limited | Health & social care | 2023 |
| THE Chai Company Ltd | Wholesale & retail | 2025 |
| THE Chandelier Company Limited | Extraterritorial | 2003 |
| THE Circle Project CIC | Education | 2026 |
| THE Civil Engineering Collective Limited | Professional & scientific | 2025 |
| THE Comedy School Limited | Education | 1998 |
| THE Conilla Effect Ltd | Other services | 2024 |
| THE Connected Consultancy Ltd | Professional & scientific | 2023 |
| THE Construction People Limited | Construction | 2022 |
| THE Cool Network Ltd | Professional & scientific | 2026 |
| THE Corellian Academy Limited | Other services | 2018 |
| THE Cozy Carpenter Ltd | Construction | 2026 |
| THE Dagda Couldron Ltd | Hospitality | 2025 |
| THE Daily VEG & Fruit Ltd | Wholesale & retail | 2025 |
| THE Dalston Trust | Arts & recreation | 2025 |
| THE Dart Venue Limited | Arts & recreation | 2026 |
| THE Davis Henley LLP | | 2005 |
| THE Delightful Dog Company Limited | Education | 2025 |
| THE Dessert Atelier Ltd | Manufacturing | 2025 |
| THE Divine Essence Ltd | Wholesale & retail | 2024 |
| THE Doggy DEN Ltd | Other services | 2025 |
| THE Donr 62 Limited | Hospitality | 2026 |
| THE Dream Centre of the Life Oasis International Church, United Kingdom Limited | Other services | 2022 |
| THE Dream Makers Events Ltd | Hospitality | 2025 |
| THE Drift Academy Ltd | Education | 2020 |
| THE E-Assessment Management Company Ltd | Education | 2018 |
| THE Edge Estates London Limited | Real estate | 2025 |
| THE EL Karamany Consultancy Limited | Information & communication | 2017 |
| THE Enne Collection Limited | Real estate | 2026 |
| THE Essex Swim School Ltd | Education | 2024 |