| SUPER138 Ltd | Hospitality | 2014 |
| SYS2 Quantico Ltd | Information & communication | 2025 |
| Syzu Ventures Ltd | Hospitality | 2025 |
| T&B Services Limited | Health & social care | 2024 |
| Talent Wise Limited | Administrative & support | 2016 |
| Tares Food Limited | Hospitality | 2016 |
| Technosol Ltd | Information & communication | 2018 |
| Teddy Music Ltd | Information & communication | 2012 |
| Thai Imperial Limited | Hospitality | 2022 |
| THE HSE of Drinks Ltd | Wholesale & retail | 2018 |
| THE Independent Newham Users Forum (Mental Health) | Health & social care | 1999 |
| THE Melbourne Spectrum Ltd | Professional & scientific | 2024 |
| THE Nexus Youth Project CIC | Health & social care | 2022 |
| THE Sarah Bonnell Foundation Ltd | Education | 2020 |
| THE Thoughts Coach Ltd | Other services | 2021 |
| Theatre Workshop Trust | Other services | 1993 |
| Thermal Health Ltd | Real estate | 2011 |
| Timeline HS Ltd. | Wholesale & retail | 2014 |
| Timewise Marketing Services Ltd | Professional & scientific | 2012 |
| Token Inc Ltd | Wholesale & retail | 2024 |
| Top Beds & Furniture Limited | Wholesale & retail | 2018 |
| Topnotch Clean Ltd | Administrative & support | 2016 |
| Transcend Managed Services (U.K.) Ltd | Administrative & support | 2023 |
| Travixum Ltd | Transport & logistics | 2021 |
| Tregain Properties Limited | Construction | 1988 |
| Trinity Taylor Solicitors Ltd | Professional & scientific | 2024 |
| Troystyle Limited | | 1984 |
| Turkin Limited | Construction | 1987 |
| Twenty Nine WS Ltd | Real estate | 2015 |
| Upright Build Ltd | Construction | 2018 |
| Uyghur Language Studies Ltd | Information & communication | 2012 |
| V.I.P Kids Wigs Limited | Other services | 2015 |
| Vape Cloudz Ltd | Wholesale & retail | 2015 |
| Viacona Limited | Hospitality | 2011 |
| Vicol Generation Business Ltd | Wholesale & retail | 2021 |
| Vigilance Care Services Ltd | Public administration | 2024 |
| Viki Park Limited | Other services | 2008 |
| Watfood Limited | Hospitality | 2019 |
| West HAM Pump House Ltd | Arts & recreation | 2022 |
| Whcoshoal Limited | Financial services | 2021 |
| Whitechapel College Ltd | Education | 2005 |
| World of Ecstacy Ltd | Wholesale & retail | 2024 |
| WR Property Investments Limited | Real estate | 2024 |
| Wright Cafe Limited | Hospitality | 2014 |
| Yachen Tsui Ltd | Wholesale & retail | 2025 |
| Yaman Properties Limited | Real estate | 2006 |
| Yaram Arts C.I.C. | Arts & recreation | 2000 |
| YES Philippines Publications Ltd | Information & communication | 2018 |
| Youstar Connect Ltd | Administrative & support | 2017 |
| Zikora Day Nursery & Preschool Limited | Education | 2017 |
| ZK Property Holdings Limited | Real estate | 2025 |
| ZOE Film and Drama Promotions Limited | Other services | 2017 |