| S&M Creation Limited | Professional & scientific | 2021 |
| S.Bogdan Ltd | Transport & logistics | 2023 |
| S.W.Brickwork and Masonry Ltd | Construction | 2020 |
| S.W.Window and Cleaning Services Ltd | Administrative & support | 2024 |
| Safe Harbour Property Ltd | Real estate | 2026 |
| Safekeeping Ltd | Professional & scientific | 2024 |
| Sage Newt Limited | Real estate | 2016 |
| Sagittarius Property Limited | Real estate | 2022 |
| Sahih Salaam Limited | Extraterritorial | 2015 |
| Salisbury Place Residents Limited | Households | 1993 |
| Sandford Services Limited | Financial services | 1982 |
| Sanjeevani Estates Ltd | Real estate | 2025 |
| SAS Holdings (Byfleet) Ltd | Real estate | 2019 |
| Satara Equity Partners LLP | | 2009 |
| Savvy Ventures Limited | Hospitality | 2019 |
| SBM Surrey Building Maintenance Ltd | Construction | 2021 |
| Scale Models Limited | Manufacturing | 2023 |
| Scandinavian Trading Limited | Wholesale & retail | 2013 |
| Schniepp Consulting Services Ltd | Professional & scientific | 2019 |
| Scott Gallagher Electrical Services Limited | Construction | 2007 |
| SDI Contracts Limited | Manufacturing | 2023 |
| Sebastian 96 Transport Ltd | Transport & logistics | 2023 |
| Seminal Financial Limited | Professional & scientific | 2023 |
| SEN Swimming UK | Education | 2025 |
| Send IT Aerial Studios Ltd | Arts & recreation | 2026 |
| Sesame Access for ALL Limited | Manufacturing | 2016 |
| Sesame Access Systems Limited | Manufacturing | 1996 |
| SHE Races C.I.C. | Education | 2022 |
| Shedev Ltd | Wholesale & retail | 2026 |
| Sheikh Logistics Limited | Transport & logistics | 2024 |
| Shemac Investments Limited | Financial services | 2020 |
| Shirley White Ltd | Wholesale & retail | 2015 |
| SHR Property Holdings Ltd | Real estate | 2026 |
| Shubh-Labh Investment Limited | Real estate | 2020 |
| Shun Feng Catering Ltd | Hospitality | 2016 |
| Sidegreen Limited | Wholesale & retail | 1984 |
| Sidsen Limited | Real estate | 2024 |
| Sierra Bravo Airsoft Ltd | Real estate | 2018 |
| Sigma International Trading Limited | Administrative & support | 2024 |
| Sigma Intl. Consultants Limited | Financial services | 2023 |
| Signai Ltd | Information & communication | 2019 |
| Siloam Hearing Ltd | Health & social care | 2024 |
| Simply Ethical Limited | Health & social care | 2010 |
| Sippio UK Ltd | Information & communication | 2021 |
| Sissinghurst Consulting Limited | Professional & scientific | 2023 |
| Siwhat Management Limited | Extraterritorial | 2011 |
| Skillsearcher Limited | Professional & scientific | 2005 |
| Sleepy Einsteins Ltd | Other services | 2024 |
| SLK Dental Hygiene Ltd | Health & social care | 2013 |
| Smart Auto Classics Limited | Wholesale & retail | 2019 |
| Smart Edge Data Centres Limited | Information & communication | 2018 |
| Smartspin Launderette Ltd | Other services | 2025 |
| SMB Brickwork Ltd | Construction | 2018 |
| Socialoptic Ltd | Information & communication | 2009 |
| Soin Dental Care Ltd | Health & social care | 2012 |
| Solar Condover Limited | Energy | 2014 |
| Solar Securities International Limited | Energy | 2016 |
| Solar Securities Limited | Professional & scientific | 2009 |
| Solar Securities Tanzania Ltd | Energy | 2016 |
| Sole Associates Accountants Ltd | Real estate | 2005 |
| Sole Associates SVR Limited | Professional & scientific | 2018 |
| Soutter Transport Management Services Ltd | Transport & logistics | 2024 |
| Space Joinery & Interiors Ltd | Manufacturing | 2021 |
| Spartan Security Systems Limited | Administrative & support | 2019 |
| Spelthorne Water-Ski Club Limited | Arts & recreation | 2026 |
| Spice Garden Surrey Ltd | Hospitality | 2023 |
| Spiced RUM Box Ltd | Wholesale & retail | 2021 |
| Spira Ventures Limited | Professional & scientific | 2012 |
| Squaire Ltd | Professional & scientific | 2018 |
| Square Aupair Limited | Administrative & support | 2017 |
| Squires Road Management Company Limited | Real estate | 2025 |
| ST. Michaels Mews Management Company Limited | Households | 1997 |
| Static Monsters Ltd | Arts & recreation | 2025 |
| Stepping Stones Psychology Ltd | Education | 2023 |
| Stevens Coaching Ltd | Health & social care | 2024 |
| Still Winter Craft Ltd | Wholesale & retail | 2023 |
| Stoneworks Productions Limited | Information & communication | 2006 |
| Storm Psychotherapy Ltd | Health & social care | 2024 |
| Strail (UK) Limited | Wholesale & retail | 1987 |
| Strands Cargo Connect Limited | Transport & logistics | 2024 |
| Structural Digest Ltd | Professional & scientific | 2025 |
| Structure Matters Ltd | Professional & scientific | 2021 |
| Studland Projects Ltd | Wholesale & retail | 2026 |
| Suburban Optical Limited | Health & social care | 2017 |
| Superclean Services Limited | Administrative & support | 1991 |
| Surbiton Claremont Limited | Households | 2002 |
| Surrey Fires & Stoves Ltd | Construction | 2025 |
| Surrey Groundworks and Civil Engineering Limited | Construction | 2026 |
| Surrey Home Renovation Group Ltd | Construction | 2025 |
| Surrey Laser Clinic Limited | Health & social care | 2021 |
| Surrey Outdoor Living Ltd | Wholesale & retail | 2021 |
| Surrey Parade Shine and Polish Limited | Other services | 2026 |
| Surrey Phoenix Basketball Club Limited | Arts & recreation | 2026 |
| Surrey Phoenix Basketball Ltd | Education | 2026 |
| Surrey Premier Construction Ltd | Manufacturing | 2016 |
| Surrey Prestige Maintenance Ltd | Administrative & support | 2020 |
| SURREY2026 Ltd | Hospitality | 2026 |
| Sweet Passion Cakes Ltd | Hospitality | 2014 |
| Swiss Food and Wine Limited | Wholesale & retail | 2014 |
| Synergy Software Limited | Information & communication | 2020 |