| Southern Electromotive Distribution Limited | Wholesale & retail | 1995 |
| Southern Livestock Enterprises Limited | Wholesale & retail | 2004 |
| Sovereigntech Ltd | Wholesale & retail | 2020 |
| Sozdar Limited | Other services | 2023 |
| SP Tax Limited | Professional & scientific | 1999 |
| SP Worktops Ltd | Construction | 2021 |
| Spa (Farnham) Limited | Real estate | 2019 |
| Space Squirrel Ltd | Information & communication | 2015 |
| Spaceplan Limited | Construction | 1998 |
| Spada Capital Limited | Financial services | 2026 |
| Sparkline YM Ltd | Wholesale & retail | 2026 |
| Spearhead Projects Ltd | Wholesale & retail | 2024 |
| Spearhead Spirits Ltd | Wholesale & retail | 2022 |
| Spec Solutions Limited | Professional & scientific | 2023 |
| Special Process Consultants Limited | Professional & scientific | 2012 |
| Specialised Pigs Limited | Agriculture & fishing | 2011 |
| Specialist Ceiling Installation Limited | Construction | 2005 |
| Specialist Engineering Consultancy Ltd | Professional & scientific | 2018 |
| Speciality Elastomers Limited | Administrative & support | 2009 |
| Speciality Polymers Limited | Administrative & support | 2008 |
| Spectrum Carpentry Projects Limited | Construction | 2025 |
| Spectrum Construction Projects Ltd | Construction | 2025 |
| Speedbird 003 Ltd | Health & social care | 2024 |
| Speedline Taxis Farnham Ltd | Transport & logistics | 2023 |
| Speedtech Business Ltd | Information & communication | 2012 |
| Spencer Close (Management Co.) Ltd | Other services | 2011 |
| Spexico Limited | Financial services | 2022 |
| Speyer D'Albazzi Limited | Administrative & support | 2009 |
| Speyer Professional Systems Limited | Professional & scientific | 2009 |
| Sphere Property Services Ltd | Construction | 2022 |
| Sphere Sports Limited | Wholesale & retail | 2025 |
| SPI Capital Ltd | Real estate | 2019 |
| Spikes & Curls Ltd | Other services | 2004 |
| Spikkels Ltd | Real estate | 2022 |
| Spirited Marketing LLP | | 2021 |
| Sponge Creative Ltd | Manufacturing | 2008 |
| Sporting Giants Ltd | Administrative & support | 2015 |
| Sports Reciprocal Limited | Information & communication | 2025 |
| Sportslaw Limited | Arts & recreation | 2009 |
| Spotted COW Farnham Ltd | Hospitality | 2015 |
| Spreakley House Associates LLP | | 2009 |
| Spree Ltd | Information & communication | 2024 |
| Spring Construction Limited | Construction | 2012 |
| Spring Homes (Surrey) Ltd | Construction | 2016 |
| Spring House (Basingstoke) Management Limited | Households | 2004 |
| Springfield Strategy Ltd | Professional & scientific | 2009 |
| Springside Court Management Limited | Households | 1985 |
| Springwood Insights Limited | Professional & scientific | 2018 |
| Sprinkle of Saffron Ltd | Hospitality | 2024 |
| Sprout Plan B Ltd | Real estate | 2004 |
| SQ Car Centre Ltd | Wholesale & retail | 2025 |
| SQE Management Ltd | Health & social care | 2010 |
| Squarcina Ltd | Manufacturing | 2013 |
| Square Live Limited | Administrative & support | 2023 |
| Square Music Ltd | Information & communication | 2003 |
| Square One Planning Limited | Professional & scientific | 2025 |
| Square One Property Solutions Ltd | Construction | 2024 |
| Square Production Ltd | Administrative & support | 2003 |
| Squires Holt Advisory Ltd | Professional & scientific | 2026 |
| Squirrel Tech Solutions Ltd | Information & communication | 2015 |
| SRM Group Holdings Ltd | Financial services | 2023 |
| SS Food and Wine (PVT) Ltd | Wholesale & retail | 2024 |
| ST Aubyns Management Ltd | Real estate | 1999 |
| ST Clements Cake Company Limited | Manufacturing | 2009 |
| ST George Roofing & Guttering Limited | Construction | 2026 |
| ST George's (Badshot LEA) Management Company Limited | Real estate | 2000 |
| ST Georges Mews Freehold Company Limited | Households | 2017 |
| ST Georges Residential Management Limited | Households | 1989 |
| ST Global Exports Ltd | Wholesale & retail | 2024 |
| ST Ives Houses Management Company Limited | Construction | 2015 |
| ST Josephs Road Management Company Limited | Households | 2013 |
| ST Mary's Freehold (Farnham) Ltd | Real estate | 2022 |
| ST Michael's Place Residents Management Co Limited | Households | 1999 |
| ST. Andrews Court (Farnham) Management Company Limited | Real estate | 1994 |
| ST. Christophers Management Company Limited | Professional & scientific | 1993 |
| ST. Joseph's Lightwater Limited | Real estate | 2026 |
| ST. Michael's Close Residents Association Limited | Households | 1984 |
| ST. Thomas Close Farnham Management Company Limited | Real estate | 2009 |
| Stabilis Group Ltd | Professional & scientific | 2016 |
| Stable Meadow Consulting Limited | Extraterritorial | 2019 |
| Stablewood Residential Park Ltd | Real estate | 2025 |
| Staceys Residents Association Limited | Households | 2002 |
| Stacked Technologies Limited | Manufacturing | 2023 |
| Stage School Limited | Extraterritorial | 2024 |
| Stampede International | Other services | 2018 |
| Standridge Consultants Limited | Professional & scientific | 2012 |
| Stanmatic Precision (UK) Limited | Wholesale & retail | 1989 |
| Stanmore Townsend Limited | Professional & scientific | 2016 |
| Stanzamere Limited | Households | 1985 |
| Star Travel 365 Limited | Administrative & support | 2025 |
| Starfish Childcare Limited | Education | 2013 |
| Starlight International Limited | Transport & logistics | 1996 |
| Staron Transport Solutions Ltd | Transport & logistics | 2018 |
| Stateline Plant & Commercial Limited | Wholesale & retail | 2012 |
| Station Hill Stores Farnham Limited | Wholesale & retail | 2021 |
| Station IX Limited | Wholesale & retail | 2024 |
| Status PR Limited | Professional & scientific | 2016 |
| Stedman Blower Limited | Real estate | 1999 |
| Stelry Limited | Real estate | 1960 |
| Stem Arboricultural Consultancy Ltd | Administrative & support | 2024 |