| Skyline Sports and Entertainment Limited | Construction | 2018 |
| Smith Coffin Private Finance Limited | Financial services | 2011 |
| Soapbox Video Ltd | Information & communication | 2024 |
| Southern Land Holdings Ltd | Real estate | 2017 |
| Southern Land Projects Ltd | Administrative & support | 2023 |
| SPS Environmental Limited | Water & waste | 2013 |
| ST John Estates LLP | | 2005 |
| Stocks Green Pre-School | Education | 2007 |
| Stone Street Consultants Limited | Extraterritorial | 2009 |
| Storm Advisors Ltd | Administrative & support | 2022 |
| Sussex Property Consultancy LLP | | 2010 |
| Swiftflow Solutions Ltd | Water & waste | 2024 |
| Table 13 Consulting Limited | Professional & scientific | 2025 |
| Taillour MTM Limited | Wholesale & retail | 2025 |
| Tempest Healthcare Limited | Health & social care | 2013 |
| Tenstruct Limited | Manufacturing | 2026 |
| THE Feed Co-Operative Limited | Hospitality | 2022 |
| THE HOP Bine Limited | Hospitality | 2014 |
| THE Progressive Group Limited | Construction | 1989 |
| THE Simpson Company (Kent) Ltd | Construction | 2023 |
| Thornhill Galleries (UK) Limited | Wholesale & retail | 2006 |
| Tide and Timber Renovations Limited | Construction | 2025 |
| Tiryns Properties Limited | Extraterritorial | 2016 |
| Trend Garden Design Limited | Administrative & support | 2025 |
| TWR Nominees Limited | Administrative & support | 2016 |
| United Sports & Entertainment Africa Ltd | Other services | 2025 |
| Unknown Brand Group Limited | Financial services | 2025 |
| Vantir Group Ltd | Information & communication | 2026 |
| Venturo Limited | Other services | 2026 |
| Victoria Neale Consultancy Ltd | Professional & scientific | 2025 |
| Vjba Limited | Professional & scientific | 2016 |
| Walbrook PR Limited | Professional & scientific | 2009 |
| Walker-Brown Electrical Ltd | Professional & scientific | 2015 |
| Washington Kent Limited | Professional & scientific | 2021 |
| Wenlock Road Investments Ltd | Real estate | 2018 |
| Westbourne & Partners LLP | | 2025 |
| Whale Hospitality Limited | Hospitality | 2019 |
| Wheble Financial Services Limited | Financial services | 2005 |
| William Minto LLP | | 2021 |
| Willowsbourne Limited | Construction | 2014 |
| Willowstone Property Solutions Limited | Real estate | 2025 |
| Witchell Holdings Limited | Information & communication | 2026 |
| Wonderland Fields Limited | Administrative & support | 2020 |
| Words in Business Limited | Professional & scientific | 2015 |
| YOO HOO! Speech and Language Therapy Limited | Education | 2014 |
| Yorgos Properties Limited | Real estate | 2024 |