| Subculture Music Ltd | Information & communication | 2026 |
| Subtle Radio C.I.C. | Information & communication | 2018 |
| Supersavers Store Ltd | Wholesale & retail | 2023 |
| Sweeney's Boxing Limited | Arts & recreation | 2022 |
| Sweetyfusion Ltd | Wholesale & retail | 2023 |
| T.G. BOW Ltd | Transport & logistics | 2014 |
| Tantrums Children's Creative Centre | Education | 2004 |
| Tauraro Tuition Ltd | Households | 2021 |
| Teck NIK Ltd | Wholesale & retail | 2024 |
| That Creative Experience Ltd | Hospitality | 2023 |
| THE Cleana Group Ltd | Administrative & support | 2025 |
| THE Focus Education Centre Focus Learning- Tuition Stokenewington Ltd | Education | 2018 |
| THE Leaf London Ltd | Hospitality | 2023 |
| THE PHANT9M Group Ltd | Wholesale & retail | 2025 |
| THE Right Sales Company International Limited | Professional & scientific | 2023 |
| THE Steam Room East Limited | Other services | 2023 |
| THE Word Christian Centre | Other services | 2016 |
| Thermodynamic Building Services Limited | Construction | 2008 |
| Thirteenth Toll Ltd | Professional & scientific | 2020 |
| Tiny Room Studios Ltd | Professional & scientific | 2024 |
| Titan JR Services Ltd | Construction | 2023 |
| Topfnorth Ltd | Real estate | 2024 |
| TPK Accountancy Limited | Professional & scientific | 2016 |
| TRE Viet Trading Limited | Hospitality | 2004 |
| Truvine Care Ltd | Administrative & support | 2018 |
| Ttkd Ltd | Construction | 2025 |
| TV Londra Limited | Information & communication | 2017 |
| UK Smart Phones Ltd | Wholesale & retail | 2019 |
| Upperclaptonbar Ltd | Hospitality | 2020 |
| Urgent Roof Repairs Ltd | Construction | 2026 |
| UT Delivery Networks Ltd | Transport & logistics | 2026 |
| Visceral Visuals Ltd | Information & communication | 2023 |
| Whole World Estates Ltd | Real estate | 2021 |
| Windscale Properties Ltd | Real estate | 2018 |
| Woodley Logistics Limited | Transport & logistics | 2019 |
| World Famous Incense Ltd | Manufacturing | 2025 |
| Wynk Ltd | Other services | 2020 |
| Yarkon Holdings Ltd | Financial services | 2018 |
| Yemisistars Ltd | Arts & recreation | 2020 |
| YOD Ltd | Construction | 2019 |
| YUNUS1 Ltd | Hospitality | 2025 |