| Surfex Coverings Limited | Construction | 2017 |
| Surfex Interior Film Limited | Construction | 2021 |
| Sushi & Bento House Ltd | Hospitality | 2018 |
| Sushi Bento Sourcing Ltd | Administrative & support | 2025 |
| Sutton House Investments (Trading) Ltd | Financial services | 2005 |
| Suttons Electrical Contracting Ltd | Construction | 2016 |
| SW6 Design & Build Limited | Construction | 2014 |
| SWB Contracts Ltd | Real estate | 2019 |
| Swiftscale Holdings Ltd | Administrative & support | 2019 |
| Swingplane Perfector Limited | Manufacturing | 2013 |
| SWS London Trading Ltd | Wholesale & retail | 2017 |
| Sygma Wills and Powers of Attorney Ltd | Other services | 2024 |
| Sync Investments Ltd | Real estate | 2018 |
| Synergy Project Consultancy Limited | Professional & scientific | 2024 |
| Syniad IT Solutions Ltd. | Information & communication | 2012 |
| System Driving School Ltd | Education | 2015 |
| T H Trees Limited | Agriculture & fishing | 2017 |
| T&L Contracts Limited | Construction | 2019 |
| T.M.S Service Provider Limited | Transport & logistics | 2021 |
| T.N.C. (Essex) Limited | Financial services | 2025 |
| T2 Associates Ltd | Administrative & support | 2017 |
| T9 London Limited | Wholesale & retail | 2018 |
| Tagg Contracting Limited | Construction | 2000 |
| Tagg Furniture Limited | Manufacturing | 1997 |
| Tagg Holdings Limited | Financial services | 2000 |
| Talacre Technologies Limited | Professional & scientific | 2023 |
| Talk 123 Limited | Administrative & support | 2017 |
| Tangerine Extreme Cleans Limited | Water & waste | 2025 |
| Tara IT Limited | Information & communication | 2016 |
| Targeting Trauma Together Ltd | Real estate | 2017 |
| Task Projects (UK) Limited | Manufacturing | 2013 |
| Tax 365 Ltd | Professional & scientific | 2019 |
| Tax and Relax Limited | Professional & scientific | 2022 |
| Taxwrite Business Services Ltd | Professional & scientific | 2016 |
| Taylor Cooperative Ltd | Construction | 2025 |
| Taylor Stone Contractors Ltd | Construction | 2024 |
| Taylors Hairdressing Rayleigh Limited | Other services | 2018 |
| Taylors Hairdressing Southend Limited | Other services | 2015 |
| Taylors of London Limited | Other services | 2011 |
| TAZ Bengal Spice Ltd | Hospitality | 2026 |
| Tbha Limited | Hospitality | 2021 |
| TBK Fitness Limited | Arts & recreation | 2023 |
| TCR Training Limited | Education | 1998 |
| TDM Systems Limited | Administrative & support | 2020 |
| Teaching Buzz Tutoring Ltd | Education | 2021 |
| Team Benn Limited | Arts & recreation | 2016 |
| Tech City Ventures Ltd | Professional & scientific | 2017 |
| Technik Hurrell Limited | Administrative & support | 2013 |
| Technoconsult Limited | Information & communication | 2025 |
| Techsource Asset and Management Ltd | Information & communication | 2025 |
| Techstoredirect Ltd | Information & communication | 2020 |
| Tedaisy Investments Limited | Professional & scientific | 2014 |
| Teddy Scaffolding Services Ltd | Construction | 2024 |
| Teeny Turtles Limited | Health & social care | 2025 |
| Teleios UK Limited | Hospitality | 2025 |
| Tempo Tuition Limited | Education | 2018 |
| Tempra Vanillo Limited | Administrative & support | 2017 |
| Tenby Systems Limited | Manufacturing | 1986 |
| Terra Firma Farming Limited | Agriculture & fishing | 2024 |
| Terra Firma Group Limited | Administrative & support | 2019 |
| Terra Firma Rail Limited | Construction | 2019 |
| Tetatec Ltd | Information & communication | 2011 |
| Tetatec Property Trading Ltd | Real estate | 2026 |
| Tetrad Groundworks Ltd | Professional & scientific | 2019 |
| Tetrad Plant Training Ltd | Construction | 2021 |
| TFA Interior Projects Limited | Construction | 1997 |
| TGL Site Services Ltd | Construction | 2025 |
| Thackray Car Sales Limited | Wholesale & retail | 2009 |
| Thaiandco Ltd | Hospitality | 2025 |
| Thames Gateway Logistics Limited | Transport & logistics | 2025 |
| That Management Limited | Professional & scientific | 2008 |
| THE 2 Johns Group Limited | Professional & scientific | 2020 |
| THE Academy of Aesthetics Science Ltd | Education | 2026 |
| THE Academy of Beauty Ltd | Other services | 2026 |
| THE Aesthetic Laser Suite Limited | Other services | 2026 |
| THE Airgun Centre Limited | Wholesale & retail | 2003 |
| THE Aspire Regulated Aesthetics Academy Ltd | Education | 2026 |
| THE Aspire Regulated Beauty Academy Ltd | Wholesale & retail | 2026 |
| THE Avington Affair Limited | Professional & scientific | 2010 |
| THE Big Trade Counter Limited | Wholesale & retail | 2018 |
| THE Big YIN Salon Limited | Other services | 2002 |
| THE Bigg Trading Company Limited | Real estate | 1996 |
| THE Board Room Darts Ltd | Wholesale & retail | 2025 |
| THE Boat Upholstery Co Ltd | Other services | 2025 |
| THE Body Diagnostic Ltd | Education | 2025 |
| THE Bookkeepers Business Coach Limited | Administrative & support | 2024 |
| THE Brading Group Limited | Hospitality | 2019 |
| THE Brook Road Cafe Limited | Hospitality | 2019 |
| THE Bubbly Bar Essex Ltd | Hospitality | 2022 |
| THE Calm Corner CIC | Administrative & support | 2023 |
| THE Card Company Hornchurch Limited | Wholesale & retail | 2021 |
| THE Cork Collective Ltd | Hospitality | 2025 |
| THE Delicatessen Company Limited | Hospitality | 2018 |
| THE Destroyer Limited | Arts & recreation | 2016 |
| THE Driving Instructor Training Academy Ltd | Education | 2018 |
| THE Essence Club Limited | Wholesale & retail | 2025 |
| THE Essex Autolocksmith Ltd | Other services | 2020 |
| THE Essex Therapy Hub Ltd | Health & social care | 2023 |
| THE Event Co - London Ltd | Arts & recreation | 2016 |
| THE Event Co - Productions Ltd. | Administrative & support | 2026 |