| Silver Star Carpentry Limited | Construction | 2015 |
| Silverline Care (Impact) Ltd | Health & social care | 2021 |
| Simcor Reservoir Consultancy Limited | Professional & scientific | 2020 |
| Simple Rent Ltd | Real estate | 2015 |
| Simplemarsh Management Company Limited | Households | 2021 |
| Simply Cinema Limited | Information & communication | 1998 |
| Simply Health Hub Limited | Health & social care | 2025 |
| Simply Oxygen Hyperbaric Chamber Rentals Ltd | Administrative & support | 2021 |
| Simply Oxygen Ltd | Other services | 2016 |
| Sirb Logistics Ltd | Transport & logistics | 2017 |
| Sirvana Limited | Transport & logistics | 2012 |
| SJY Retail Limited | Wholesale & retail | 2024 |
| Skvc Limited | Real estate | 2021 |
| Slamway Limited | Administrative & support | 1982 |
| SLB Compliance Ltd | Professional & scientific | 2025 |
| Slough Kitchen Limited | Hospitality | 2024 |
| Sltec Limited | Administrative & support | 2018 |
| Smart Sort Logistic Ltd | Transport & logistics | 2022 |
| SMC Quality Consulting Ltd | Information & communication | 2024 |
| Smeeton Limited | Real estate | 2017 |
| Smiles by Nyasha Ltd | Health & social care | 2025 |
| Smith Arthur Limited | Professional & scientific | 2015 |
| Smunir Ltd | Transport & logistics | 2022 |
| SMV Heating & Plumbing Limited | Construction | 2017 |
| Sneakersnstuff Ltd | Wholesale & retail | 2013 |
| Soanj Limited | Real estate | 2023 |
| Socialise Media Limited | Administrative & support | 2025 |
| Softway Computer Consultancy Limited | Information & communication | 1998 |
| Sofuture Properties Limited | Real estate | 2019 |
| Solmare Investments Limited | Real estate | 2013 |
| Solve Heating Services Limited | Construction | 2021 |
| Solway House Hounslow Limited | Real estate | 2020 |
| Somerton Technic Limited | Wholesale & retail | 2017 |
| Sophie Paterson Interiors Limited | Administrative & support | 2008 |
| Sound Check Systems Ltd | Professional & scientific | 2024 |
| Source Group International Holdings Limited | Other services | 2017 |
| Source Group International Limited | Administrative & support | 2015 |
| Southcott Consultancy Limited | Professional & scientific | 2014 |
| Southeast Power Engineering Ltd | Energy | 2007 |
| Soxx London Limited | Wholesale & retail | 2022 |
| Specialist Screeding Services Ltd | Construction | 2024 |
| Spectra Investments Limited | Real estate | 1989 |
| Spice Insight Ltd | Professional & scientific | 2015 |
| Spinney Hill Tyres Limited | Wholesale & retail | 2024 |
| Spiran Ltd | Wholesale & retail | 2020 |
| SPO Developments Limited | Construction | 2013 |
| SQN Asset Management Limited | Financial services | 2017 |
| SRF Interiors (UK) Limited | Wholesale & retail | 2022 |
| ST Antony's H&H Ltd | Real estate | 2024 |
| ST George's Weybridge | Education | 1993 |
| ST George's Weybridge and Surrey County Tennis Centre Limited | Education | 1993 |
| Staines Demolition Limited | Construction | 1961 |
| Stansty House Ltd | Extraterritorial | 2008 |
| Star Mountain: Design for Web Ltd | Information & communication | 2017 |
| Stark Renovations Ltd | Construction | 2018 |
| Station Ventures Ltd | Wholesale & retail | 2025 |
| Stay Grounded Overhead Services Ltd | Construction | 2026 |
| Stellar Scale Ltd | Wholesale & retail | 2026 |
| Step Electrical Limited | Construction | 2010 |
| Stephen Rawling Consulting Limited | Information & communication | 2015 |
| Sterling ER Ltd | Professional & scientific | 2019 |
| Steve's Repairs & Installations Limited | Administrative & support | 2014 |
| Stevens & Co Estates Limited | Real estate | 2025 |
| Stevenson Equity Ltd | Real estate | 2024 |
| Stirling Rentals Limited | Hospitality | 2025 |
| STR Distribution Limited | Professional & scientific | 2007 |
| Strange of London Limited | Wholesale & retail | 2011 |
| Strategy Stack Ltd | Information & communication | 2025 |
| Strongbow Management Company (Ashtead) Limited | Real estate | 1982 |
| Study in Britain and Abroad Limited | Education | 2012 |
| Stungbysplendour Limited | Arts & recreation | 2022 |
| Stylo-Milo Snack House Ltd | Hospitality | 2023 |
| Subway Addlestone Ltd | Hospitality | 2017 |
| Sufyan Home Ltd | Real estate | 2023 |
| Sugar Pine Interiors Limited | Professional & scientific | 2024 |
| Sunn Foods Ltd | Hospitality | 2024 |
| Sunnifa Trading Limited | Wholesale & retail | 2022 |
| Sunwood Properties Limited | Real estate | 1998 |
| Super Road Ltd | Transport & logistics | 2024 |
| Superior Steppers Ltd | Health & social care | 2021 |
| Supportmonkey.Net Ltd | Other services | 2005 |
| Supreme Being Fitness Surrey Ltd | Administrative & support | 2017 |
| Supreme International Business Service Ltd | Wholesale & retail | 2016 |
| Suresat Limited | Construction | 2015 |
| Surrey Alarms Ltd | Administrative & support | 2022 |
| Surrey Construction Group Ltd | Construction | 2024 |
| Surrey Courses Ltd | Education | 2021 |
| Surrey Exterior Cleaning Ltd | Administrative & support | 2019 |
| Surrey Green Gardens Ltd | Administrative & support | 2014 |
| Surrey Heat Co Ltd | Construction | 2026 |
| Surrey Lofts and Extensions Limited | Construction | 2025 |
| Surrey Plumbing & Heating Guildford Limited | Construction | 2024 |
| Surrey Pressure Clean Ltd | Administrative & support | 2017 |
| Surrey Property Care Limited | Administrative & support | 2026 |
| Surrey Property Professionals Limited | Real estate | 2008 |
| Surrey Roofing Specialists Limited | Construction | 2016 |
| Surrey Scaffolding Ltd | Construction | 2020 |
| Surrey Solutions Ltd | Construction | 2021 |
| Surrrey Property Developments Ltd | Real estate | 2025 |
| Sustainable Superfoods (UK) Private Limited | Professional & scientific | 2021 |