| Speed CNC Limited | Professional & scientific | 2006 |
| Speedcam Systems Limited | Administrative & support | 2011 |
| Spencer Advisory Services Limited | Professional & scientific | 2020 |
| Spend a Penny Installations Ltd | Construction | 2004 |
| Spider Web Services Ltd | Information & communication | 2023 |
| Spires View Management Company Limited | Households | 2021 |
| Spirited Business Ltd | Other services | 2021 |
| Spitfire Meadow Management Company Limited | Households | 2025 |
| Spitroast Enterprises LLP | | 2009 |
| Splashmobile Limited | Information & communication | 2000 |
| Sport Welcome Limited | Education | 2021 |
| Sports Trading Cards UK Limited | Wholesale & retail | 2019 |
| Springs Development Limited | Construction | 2020 |
| Springwood Manor Limited | Households | 1998 |
| Springwood Park Limited | Households | 2000 |
| Sprocket Holdings Ltd | Real estate | 2019 |
| SQI Pro Limited | Manufacturing | 2019 |
| Squad Safe Ltd | Professional & scientific | 2026 |
| Square Inch Limited | Professional & scientific | 2013 |
| Square Land & Developments Limited | Construction | 2020 |
| Srfnd Limited | Financial services | 2022 |
| SRI Srikala Ltd | Information & communication | 2026 |
| SRI Storage Services Limited | Information & communication | 2015 |
| SSJ Convenience Store Ltd | Wholesale & retail | 2026 |
| ST Accounting Services Limited | Professional & scientific | 2014 |
| ST Bookkeeping and Payroll Ltd | Professional & scientific | 2021 |
| ST John Advisers Limited | Financial services | 2006 |
| ST John Estates Limited | Construction | 2006 |
| ST John Priory Cottages Limited | Real estate | 2021 |
| ST Paul's Court (1-19) RTM Company Limited | Households | 2016 |
| ST Paul's Court (20-35) RTM Company Limited | Households | 2016 |
| ST. Augustine's Chapel Charity | Other services | 1991 |
| Stables Daycare Holdings Ltd | Financial services | 2024 |
| Stables Daycare Limited | Health & social care | 2009 |
| Stadden Media Ltd | Information & communication | 2014 |
| Stadion Ltd | Information & communication | 2014 |
| Staffswift Limited | Administrative & support | 2023 |
| Stakeholder Management Ltd | Administrative & support | 2011 |
| Standard Medical Services Limited | Health & social care | 2025 |
| Stanley Holmes Limited | Professional & scientific | 2005 |
| Stansfeld Potter Consulting Limited | Professional & scientific | 2017 |
| Staple Designs Ltd | Professional & scientific | 2024 |
| Staplehurst Accounts Limited | Professional & scientific | 2021 |
| Staplehurst Coffee Ltd | Manufacturing | 2022 |
| Staplehurst Country Stores Limited | Wholesale & retail | 2015 |
| Staplehurst Free Church | Other services | 2008 |
| Staplehurst Kebab & Pizza Ltd | Hospitality | 2023 |
| Staplehurst MOT Centre Ltd | Wholesale & retail | 2012 |
| Staplehurst Osteopathy Limited | Health & social care | 2020 |
| Staplehurst Physiotherapy and Sports Injury Clinic Limited | Other services | 2022 |
| Staplehurst Small Plant & Mowers Limited | Other services | 2008 |
| Star and the Rose Limited | Wholesale & retail | 2024 |
| Starcatcher Productions Ltd | Arts & recreation | 2019 |
| Starlight Health Protection Limited | Wholesale & retail | 2015 |
| Starr Bros Ltd | Construction | 2014 |
| Startpoint Limited | Hospitality | 2014 |
| Stateside Sports Ltd | Wholesale & retail | 2021 |
| Statfirst Ltd | Information & communication | 2016 |
| Static Installs Limited | Construction | 2019 |
| Station Pharmacy Limited | Wholesale & retail | 2002 |
| Stax Boutique Property Ltd | Real estate | 2026 |
| Stay Fresh Products Limited | Wholesale & retail | 2006 |
| Steers Place Land Limited | Agriculture & fishing | 2010 |
| Steller Packing Ltd | Administrative & support | 2020 |
| Stelmar Holdings Limited | Professional & scientific | 1996 |
| STEP3 Digital Limited | Information & communication | 2016 |
| Stepper (UK) Limited | Wholesale & retail | 1990 |
| Stepstart Renovations Limited | Construction | 2025 |
| Stepstone Imaging Ltd | Professional & scientific | 2020 |
| Sterndale Consulting Limited | Professional & scientific | 2024 |
| Sternline Ltd | Professional & scientific | 2026 |
| Steve Baker Architect Limited | Professional & scientific | 2018 |
| Stevens Enterprises Limited | Wholesale & retail | 2024 |
| Steward Logistics Limited | Transport & logistics | 2025 |
| Steyn Studio Ltd | Professional & scientific | 2016 |
| Stick & Twist Ltd | Professional & scientific | 2017 |
| Stile Bridge Operations Ltd | Hospitality | 2021 |
| Still Acres Limited | Hospitality | 2016 |
| Still Lane Management (PVT) Ltd | Real estate | 2024 |
| STILLMANSOFSEVENOAKS1 Ltd | Wholesale & retail | 2025 |
| STM (Sussex) Limited | Wholesale & retail | 2016 |
| Stockman Limited | Extraterritorial | 1996 |
| Stockmarkets Digest Limited | Information & communication | 2000 |
| Stone Floor Refurbishment Ltd | Manufacturing | 2019 |
| Stone Labels Limited | Administrative & support | 1984 |
| Stonehenge Group Ltd | Financial services | 2026 |
| Stradale Icons Limited | Professional & scientific | 2025 |
| Strategic Family Office Limited | Financial services | 2013 |
| Strategic Partners Europe Limited | Professional & scientific | 2014 |
| Strategic Professional Consulting Ltd | Financial services | 2008 |
| Strategic Sight Limited | Professional & scientific | 2012 |
| Strategic Wealth Management Limited | Financial services | 1987 |
| Strathnaver Ltd | Real estate | 2016 |
| Stratus Vista Limited | Professional & scientific | 2025 |
| Streetens Construction Limited | Construction | 2014 |
| Stuart Lane Design Limited | Professional & scientific | 2017 |
| Stuart Notholt Communications Limited | Information & communication | 2006 |
| Stubbsy Ltd | Information & communication | 2013 |
| Student Market Ltd | Information & communication | 2026 |
| Studio Abacus Limited | Wholesale & retail | 2020 |