| Smuthglide Ltd | Health & social care | 2010 |
| Snapped Ankles Limited | Arts & recreation | 2018 |
| Snbc UK Limited | Wholesale & retail | 2019 |
| Snna Properties Ltd | Real estate | 2022 |
| Soft Marketing Limited | Administrative & support | 2016 |
| Solero Group Limited | Financial services | 2015 |
| Solid Oak Solutions Ltd | Administrative & support | 2025 |
| Sonnex Surveying Limited | Professional & scientific | 2013 |
| Sonny Ideas Limited | Professional & scientific | 2017 |
| Sonoak Ltd | | 2011 |
| Soulstream Codex Limited | Wholesale & retail | 2025 |
| Soundex Limited | Extraterritorial | 2012 |
| South East Air-Conditioning & Hvac Ltd | Construction | 2026 |
| Southern Mastic Roofing Limited | Construction | 2016 |
| Spa Fitness Group Ltd | Arts & recreation | 2024 |
| Space Agency Marketing Ltd | Extraterritorial | 2017 |
| Specialist Car Finder Ltd | Wholesale & retail | 2008 |
| Speed Runners Limited | Transport & logistics | 2015 |
| Sphere Game Studios Limited | Information & communication | 2017 |
| Spice Masalla Limited | Hospitality | 2025 |
| Spin Monsters Ltd | Wholesale & retail | 2018 |
| Spitfire Creator Network Ltd | Administrative & support | 2025 |
| Sports Initiative Ltd | Administrative & support | 2024 |
| Spotlight Media Ltd | Information & communication | 2018 |
| Springfield Storage Solutions Ltd | Transport & logistics | 2024 |
| Srdann Limited | Information & communication | 2025 |
| SSR PUB Co. Limited | Hospitality | 2017 |
| ST Peter's School Wraparound Limited | Education | 2008 |
| ST. Paul's Court (Spalding) Limited | Households | 2006 |
| Stanley Flooring Ltd | Construction | 2026 |
| Stanleys Holdings Limited | Professional & scientific | 2008 |
| Stanleys of Marden Limited | Wholesale & retail | 1995 |
| Star Homes Group Limited | Financial services | 2015 |
| Star Homes UK Limited | Real estate | 2000 |
| Star Personnel Limited | Administrative & support | 2012 |
| Starlight Maintenance Solutions Limited | Construction | 2025 |
| Starlocks Healthcare Limited | Health & social care | 2022 |
| Station Haulage (Rainham) Limited | Construction | 2002 |
| Steam & Air Blowing Service Company (Sabsco) Limited | Other services | 2003 |
| Steel Core Defence Systems Limited | Extraterritorial | 2010 |
| Steel Core Designs Limited | Manufacturing | 2010 |
| Steel Core Group Limited | Professional & scientific | 2015 |
| Stelf Properties Ltd | Financial services | 2018 |
| Step Above Ltd | Construction | 2021 |
| Steton Holdings Limited | Financial services | 2019 |
| Stone Farm Estates Ltd | Real estate | 2026 |
| Straight Beam Cabling Ltd | Information & communication | 2012 |
| Streek Industries Ltd | Financial services | 2026 |
| Streetpay Labs Ltd | Information & communication | 2026 |
| Stronger Together Online Coaching Ltd | Education | 2023 |
| Struvalis Group Ltd | Construction | 2025 |
| Stuntsmvp Limited | Information & communication | 2008 |
| Sullivan Investments Limited | Real estate | 2013 |
| Summit Lifting Ltd | Transport & logistics | 2025 |
| Sundial Promotions Ltd | Other services | 2024 |
| SVG Commercial Ltd | Real estate | 2022 |
| SVG Property Ltd | Real estate | 2021 |
| Sweepaway Limited | Professional & scientific | 2003 |
| Sweet Maritime Limited | Hospitality | 2019 |
| Sweet Sensations Catering Limited | Hospitality | 2025 |
| Sweet Sensations Eats & Treats Limited | Hospitality | 2017 |
| Swingband.Co Limited | Arts & recreation | 2015 |
| SWS Real Estate Ltd | Real estate | 2025 |
| SYE Creative Digital & Design Services Ltd | Professional & scientific | 2023 |
| Synarasys Ltd | Information & communication | 2026 |
| T&J Cleaning Solutions Ltd | Administrative & support | 2025 |
| T.A.P. (Executive Search) Limited | Administrative & support | 2017 |
| T2 Construction and Carpentry Limited | Construction | 2026 |
| Talha Esila Ltd | Hospitality | 2024 |
| Talisa Ltd | Wholesale & retail | 2021 |
| Tapers Beauty Box Limited | Other services | 2019 |
| Tapers Hairdressing Limited | Other services | 2007 |
| Tapers Ladies Limited | Other services | 2015 |
| Taps 4 Less Limited | Wholesale & retail | 2013 |
| Tarkin Limited | Professional & scientific | 2026 |
| Tashev Engineering Ltd | Construction | 2010 |
| Taylor Clifford Health Ltd | Health & social care | 2022 |
| Taylor TVR Limited | Wholesale & retail | 2017 |
| TBH (Kent) Limited | Real estate | 2011 |
| TBH (Kings Hill) Limited | Real estate | 2009 |
| TBH Property Holdings Limited | Financial services | 2007 |
| TBH Real Estate Developments Limited | Real estate | 2007 |
| TBH Real Estate Investments Limited | Real estate | 1995 |
| TBH Security Trustee Nominee Limited | Financial services | 2025 |
| Technical Lucidity Limited | Administrative & support | 2008 |
| Techsultant Limited | Information & communication | 2015 |
| Techzone Events Ltd | Arts & recreation | 2024 |
| Teddy Bear Investments Limited | Real estate | 2017 |
| Teleconnect Holdings Limited | | 1985 |
| Telsons Ltd | Manufacturing | 2019 |
| Temple Farm Limited | Wholesale & retail | 2009 |
| Tendi Properties Ltd | Real estate | 2019 |
| Terance Butler Advisory Limited | Professional & scientific | 2009 |
| Terance Butler Farms and Estates Limited | Real estate | 1991 |
| Terance Butler Holdings Limited | Financial services | 1999 |
| Terance Butler Limited | Professional & scientific | 1992 |
| Terance Butler Wealth Limited | Financial services | 2014 |
| Testgrove Limited | Administrative & support | 1999 |
| THE 2ND Spring Ltd | Health & social care | 2026 |
| THE Academia Industry Bridge Ltd | Education | 2025 |