| Rowing World Limited | Information & communication | 2014 |
| Scorpion Pest & Vermin Control Ltd | Other services | 2015 |
| Seki Consulting Limited | Professional & scientific | 2018 |
| Senna's Plastering Solutions Ltd | Construction | 2025 |
| Serial Ideas Ltd | Administrative & support | 2013 |
| Sheldon Developments Ltd | Construction | 2023 |
| Shopland and Hough Contracts Limited | Construction | 2018 |
| Simonjhardy International Coaching Ltd | Other services | 2016 |
| Smarter Mobile Finance Limited | Administrative & support | 2019 |
| SMH Garage Limited | Manufacturing | 2012 |
| Smidstrup Strand Ltd | Professional & scientific | 2018 |
| Soloman Property Services Ltd | Real estate | 2021 |
| Spill the Cleanz Ltd | Administrative & support | 2021 |
| SSR Services Limited | Other services | 2003 |
| Standard Road Flat Management Company Limited | Households | 2022 |
| Steven Celimon Limited | Real estate | 2010 |
| Stirling Cars Limited | Wholesale & retail | 2020 |
| Stirling Group London Limited | Financial services | 2022 |
| Stirling Holdings London Limited | Real estate | 2022 |
| Stone Hardy Limited | Wholesale & retail | 1987 |
| Symbyliad Consulting Limited | Professional & scientific | 2024 |
| Techkno Ltd | Information & communication | 2020 |
| Tembo Property Limited | Households | 2020 |
| Templar Installations Group Ltd | Construction | 2019 |
| Thatcher Fitness Ltd | Other services | 2017 |
| THE Bayford Group Limited | Construction | 2025 |
| THE Brambles (Romford) Limited | Households | 2006 |
| THE Devine Group 2023 Ltd | Construction | 2023 |
| THE Digital Index Limited | Information & communication | 2017 |
| THE Grey Area Ltd | Other services | 2018 |
| THE Old Guinea Trading Company Limited | Hospitality | 2011 |
| THE Pharmaceutical Microbiology Interest Group (Pharmig) | Education | 2000 |
| THE Teatro Group Ltd | Hospitality | 2021 |
| Thomas Philip Kerkham Ltd | Extraterritorial | 2024 |
| Tinypl Ltd | Hospitality | 2025 |
| TOM COX Ltd | Agriculture & fishing | 2009 |
| Transco Worldwide Moving and Storage Limited | Transport & logistics | 1985 |
| TSR Installations Limited | Construction | 2019 |
| Two Greedy Pigs Ltd | Hospitality | 2023 |
| Valiant Cleaning Services(Uk) Ltd | Administrative & support | 2018 |
| Virve Limited | Professional & scientific | 2024 |
| VVI Properties Ltd | Real estate | 2018 |
| Walk Tall Health Ltd | Health & social care | 2014 |
| Wessex Lift Co Ltd | Manufacturing | 1976 |
| Whitehawk Corporate Services Limited | Other services | 2011 |
| Widow's Walk Film Ltd | Information & communication | 2016 |
| Wood HR Consulting Ltd | Professional & scientific | 2020 |
| Woof Walkers Ltd | Other services | 2019 |
| Wordman Copywriting Limited | Information & communication | 2008 |
| Zero PER Kilo Limited | Agriculture & fishing | 2025 |