| Total Contracts Limited | Construction | 2008 |
| Total Maintenance Contractors Ltd | Construction | 2023 |
| Total Shunts Ltd | Transport & logistics | 2020 |
| Totallocksmithessex Limited | Administrative & support | 2025 |
| Touched Forever Ltd | Manufacturing | 2022 |
| Toykay Properties Ltd | Real estate | 2019 |
| TPM (Facility Management) Ltd | Professional & scientific | 2013 |
| TR Interiors (Essex) Ltd | Construction | 2015 |
| Tracktech (South East) Ltd | Construction | 1999 |
| Tracy James Limited | Extraterritorial | 2022 |
| Tracy James Removals Limited | Extraterritorial | 2022 |
| Tracy James Transport Limited | Water & waste | 2022 |
| Transmec UK Limited | Transport & logistics | 1990 |
| Trevor Marriner Services Limited | Transport & logistics | 2016 |
| Tri-Coat Wall Finishes Limited | Construction | 2012 |
| Triple J Homes and Property Limited | Real estate | 2026 |
| Triple O Centre Ltd | Health & social care | 2025 |
| Tronios Distribution U.K. Limited | Other services | 2023 |
| Tronios Limited | Other services | 2022 |
| Trool Global Services Limited | Health & social care | 2014 |
| Troz Ltd | Real estate | 2023 |
| Trucksure Limited | Transport & logistics | 2012 |
| Trufit Lift Services Limited | Professional & scientific | 2024 |
| Truss Leads Ltd | Professional & scientific | 2017 |
| TSB Investments Limited | Real estate | 2022 |
| TT Bookkeeping Services Ltd | Professional & scientific | 2017 |
| Tudor Wood Contractors Limited | Construction | 2017 |
| Turbozola Limited | Transport & logistics | 2014 |
| Turnercitrade Ltd | Wholesale & retail | 2024 |
| Twenty Two Property Group Limited | Extraterritorial | 2024 |
| U-Drive Carz Ltd | Wholesale & retail | 2023 |
| U.K. Statutory Services Limited | Other services | 1997 |
| Uefp Limited | Professional & scientific | 2024 |
| UK Combat Sports Board Ltd | Arts & recreation | 2026 |
| UK Paint Services Limited | Construction | 2015 |
| Ukcardsonline Limited | Wholesale & retail | 2026 |
| Ullash and Co Limited | Wholesale & retail | 2025 |
| Ultra Logik Limited | Transport & logistics | 2015 |
| Unit Hire Holdings Limited | Administrative & support | 2021 |
| Unit Hire Limited | Administrative & support | 2000 |
| United Cleaning Services Essex Limited | Administrative & support | 2017 |
| Universal Safeguard Limited | Administrative & support | 2018 |
| UPR Scaffolding Services Limited | Construction | 2007 |
| Urovis Limited | Health & social care | 2017 |
| Uzima Consultation Limited | Health & social care | 2014 |
| V&E Tiling Ltd | Construction | 2026 |
| V'Shea Ltd | Other services | 2020 |
| V-Pro Solutions Ltd | Construction | 2016 |
| V2 Consulting Limited | Information & communication | 2018 |
| V8 Demolition and Waste Ltd | Water & waste | 2024 |
| Vale Secure Installations Limited | Construction | 2019 |
| Valentines Group Ltd | Real estate | 2021 |
| Vanguard HR Consultancy Limited | Professional & scientific | 2026 |
| Vanitorials Limited | Wholesale & retail | 2000 |
| VDS Contracts Limited | Information & communication | 2011 |
| Velar Homes Ltd | Real estate | 2022 |
| Vezir Ltd | Hospitality | 2015 |
| Vianen Flowerexport Ltd | Wholesale & retail | 2019 |
| Vibe Labs Innovations Ltd | Information & communication | 2026 |
| Victoria Link Ltd | Other services | 2015 |
| Victoria Road Management (SS17) Limited | Households | 2023 |
| Virtellex Limited | Information & communication | 2025 |
| Visuals by Mivic Limited | Professional & scientific | 2025 |
| Vital Direct Marketing Ltd | Professional & scientific | 2000 |
| Vitec Estates Ltd | Real estate | 2022 |
| Vitec Interiors Limited | Construction | 2007 |
| VJJ Rose Investments Ltd | Real estate | 2022 |
| Vlad Recovery Ltd | Transport & logistics | 2021 |
| Voltwise Electrical Services Ltd | Professional & scientific | 2026 |
| Vortnet Ltd | Information & communication | 2023 |
| Vortx Racing Ltd | Manufacturing | 2024 |
| VRA Commercials Limited | Wholesale & retail | 2019 |
| Vsrbn Limited | Wholesale & retail | 2024 |
| Vulcan Security Services Limited | Financial services | 2025 |
| W.P. Property Management Ltd | Extraterritorial | 2015 |
| Water Shield Roofing and Building Ltd | Construction | 2025 |
| Watt Hays Homes Limited | Real estate | 2026 |
| WD Gastech Ltd | Manufacturing | 2022 |
| WDR Riser Limited | Public administration | 2026 |
| WE Seal Sealants Limited | Construction | 2021 |
| Webb Evans Limited | Professional & scientific | 2014 |
| Webb Property Development Ltd | Real estate | 2023 |
| Weldtech (Essex) Limited | Construction | 2016 |
| West Trailer Rentals Limited | Administrative & support | 1997 |
| Westminster Heating & Plumbing Limited | Construction | 2001 |
| WG Developments Ltd | Real estate | 2021 |
| Wharf Group Limited | Administrative & support | 2015 |
| Wheelieboysuk Ltd | Education | 2024 |
| Whiston Enterprises Limited | Information & communication | 2018 |
| Whitwell Court (Stanford LE Hope) Management Company Limited | Households | 1992 |
| Wilbow Properties Limited | Real estate | 2016 |
| Wilkins & Norrington Limited | Real estate | 2011 |
| William Consultant Ltd | Real estate | 2019 |
| Witrock European Transport Ltd | Transport & logistics | 2023 |
| Witrock Ltd | Wholesale & retail | 2023 |
| WK Outdoors Ltd | Wholesale & retail | 2021 |
| Wojtek & Ravi Properties Ltd | Real estate | 2024 |
| Women Leaders Arise | Other services | 2024 |
| X-Line Ltd | Construction | 2020 |
| Xplan Design Services Ltd | Professional & scientific | 2025 |