| Speckie Limited | Construction | 2015 |
| SS Sales & Marketing Limited | Information & communication | 2015 |
| Sttich With Touoch Ltd | Other services | 2024 |
| Supporting Young Futures Limited | Administrative & support | 2013 |
| Swansura Ltd | Wholesale & retail | 2025 |
| Tack Trades Limited | Construction | 2015 |
| Talking Property Ltd | Real estate | 2017 |
| Tally Lucas Associates Ltd | Professional & scientific | 2018 |
| Taqwa Hijama Hub Ltd | Health & social care | 2024 |
| Taxtracker Limited | Information & communication | 1998 |
| Teen Challenge London | Other services | 1998 |
| THE Glade London Ltd | Real estate | 2026 |
| THE Little Runners Sports in Schools Limited | Arts & recreation | 2009 |
| THE Music Partnership Limited | Professional & scientific | 1998 |
| Thornton Secretarial Services Ltd | Professional & scientific | 1998 |
| Timepatch Property Management Limited | Households | 1992 |
| Trans Marine (London) Limited | Transport & logistics | 1990 |
| Tuberoseuk Ltd | Households | 2022 |
| Tunedin Payroll Limited | Professional & scientific | 2024 |
| UK Utility Experts Ltd | Professional & scientific | 2017 |
| Vasily Enterprises Limited | Health & social care | 2001 |
| Village Grays Ltd | Hospitality | 2021 |
| Vincent Holdings Enterprise Ltd | Financial services | 2020 |
| VNR Windows Ltd | Manufacturing | 2015 |
| Watchstrapson Ltd | Wholesale & retail | 2016 |
| Westberry Enterprises Limited | Education | 2026 |
| WJ Construction Limited | Construction | 2017 |
| Woodbridge Auto Repairs Limited | Wholesale & retail | 2026 |
| Woodford Interiors Limited | Construction | 2003 |
| Woodford Roofing & Maintenance Limited | Construction | 2018 |
| Woodford World Limited | Financial services | 2025 |
| Worldwide Investment Properties Ltd | Real estate | 2024 |
| Xenica Properties Limited | Real estate | 2017 |
| Your Data Ltd | Information & communication | 2014 |
| ZAK (Goldberg) Ltd | Construction | 2022 |