| ST Vincents Veterinary Practice Limited | Professional & scientific | 2015 |
| Stock Road Dental Surgery Limited | Health & social care | 2008 |
| Straighway Team Ltd | Wholesale & retail | 2021 |
| Studio 1-2-3 Limited | Wholesale & retail | 2019 |
| Submarine Travel Ltd | Administrative & support | 2023 |
| Subrata Medical Services Limited | Administrative & support | 2014 |
| Supergreen Investments Limited | Real estate | 2017 |
| Swangold Limited | Households | 1985 |
| Taylor Matrix Solutions Design Limited | Information & communication | 2017 |
| Taylor Mitchell Limited | Other services | 2023 |
| Temvox LLP | | 2023 |
| TEN Dental Practice LLP | | 2010 |
| TEN Property Holdings Limited | Real estate | 2025 |
| Tenacitics Limited | Information & communication | 2019 |
| THE Devonshire Clinic Limited | Professional & scientific | 1998 |
| THE Facial Aesthetic Skin Clinic Limited | Other services | 2017 |
| THE Implant Dentist Limited | Health & social care | 2026 |
| THE Implant Experts Ltd | Health & social care | 2013 |
| THE London Fire Safety Compliance Solutions Ltd | Public administration | 2022 |
| THE London GAS Compliance Company Ltd | Construction | 2022 |
| THE Piper Retail Fund | | 1988 |
| THE Playground Theatre Company Limited | Arts & recreation | 1998 |
| THE Polo Magazine Limited | Information & communication | 1992 |
| Thirty Stanhope Gardens Limited | Households | 1974 |
| Toptier Padel Ltd | Arts & recreation | 2024 |
| Translation Experts Limited | Information & communication | 1992 |
| Travolab Ltd | Information & communication | 2003 |
| Treasure Orbit (UK) Ltd | Wholesale & retail | 2018 |
| UK NRG Ltd | Professional & scientific | 2021 |
| Uplift Capital 3 Limited | Real estate | 2018 |
| Uplift Capital Limited | Real estate | 2011 |
| Valdere Group UK Ltd | Administrative & support | 2019 |
| Vera Sweden Ltd | Administrative & support | 2020 |
| Victoria Smiles Limited | Health & social care | 2022 |
| VN13 Ethics Ltd | Wholesale & retail | 2016 |
| W1 Healthcare Services Ltd | Health & social care | 2020 |
| Waste Re-Energiser Limited | Energy | 2022 |
| WCS Engineering Recruitment Ltd | Construction | 2019 |
| Wesley Court Dental Surgery Limited | Health & social care | 2010 |
| Westcott Medical Holdings Limited | Financial services | 2020 |
| Westcott Medical Investments Limited | Health & social care | 2020 |
| Westville Dental Limited | Health & social care | 2022 |
| William Eikos Limited | Manufacturing | 2018 |
| Winterinvestmentgroup Limited | Financial services | 2020 |
| Worldwide Business Applied Ltd | Wholesale & retail | 2020 |
| Young Forever Limited | Wholesale & retail | 2018 |
| Zero:Seven Dental Practice Limited | Health & social care | 2008 |
| Zero:Seven Holdings Limited | Financial services | 2021 |