| SO Fresh SO Clean Carpet & Upholstery Limited | Administrative & support | 2019 |
| Social Development Agency Care Ltd | Health & social care | 2017 |
| Socialclique Ltd | Information & communication | 2023 |
| Socium People Ltd | Administrative & support | 2018 |
| Soil Reengineering Services Ltd | Professional & scientific | 2022 |
| Solar Projects & Services Ltd | Construction | 2009 |
| Solas Fibre Ltd | Information & communication | 2024 |
| Solatium Properties Ltd | Real estate | 2016 |
| Solenne Ltd | Wholesale & retail | 2026 |
| Soper Hall Community Centre Ltd | Arts & recreation | 2010 |
| Sorrel AI Limited | Information & communication | 2022 |
| Soundproofing UK Ltd | Construction | 2015 |
| South Hill Residents Association Limited | Households | 1962 |
| Southbuild Ltd | Construction | 2026 |
| Southeast Landscapes Ltd. | Administrative & support | 2002 |
| Southern Laser Cleaning Ltd | Administrative & support | 2025 |
| Sovereign Cars Surrey Ltd | Wholesale & retail | 2016 |
| Space Construction Limited | Construction | 2026 |
| Space Garden Rooms Limited | Construction | 2023 |
| Spark Cool Services Ltd | Construction | 2025 |
| Specialist Consultancy Limited | Professional & scientific | 2022 |
| Spectra Finishes Ltd | Construction | 2017 |
| Speculative Projects Ltd | Professional & scientific | 2024 |
| Speedcom Holdings Limited | Financial services | 2016 |
| Speeding JET Aviation Limited | Administrative & support | 2022 |
| Speedy Media Ltd | Information & communication | 2023 |
| Speedyclearance Limited | Water & waste | 2017 |
| Spencer Collings & Co Limited | Manufacturing | 2005 |
| Sports Clubhouses Ltd | Construction | 2013 |
| Sports Science Limited | Wholesale & retail | 2020 |
| Sportsgenie Limited | Arts & recreation | 2025 |
| Springfield Gardens (Felbridge) Residents Company Limited | Households | 2007 |
| Spry Communications Limited | Administrative & support | 2014 |
| SPV Developments Limited | Construction | 2019 |
| SRI Traders UK Limited | Wholesale & retail | 2026 |
| SRS Windows and Doors Limited | Construction | 2014 |
| ST Andre Services Ltd | Real estate | 2021 |
| ST Nails LDN Limited | Other services | 2025 |
| ST. Lawrence Management Limited | Households | 1998 |
| ST. Merryn Freehold Limited | Real estate | 2005 |
| ST. Merryn Management Limited | Real estate | 1979 |
| Stablecourt Residents Association Limited | Households | 1972 |
| Standard Plant Hire Limited | Administrative & support | 2009 |
| Standard Property Holdings Limited | Real estate | 2018 |
| Standard UK Property Holdings Ltd | Real estate | 2023 |
| Stash Holdings Limited | Financial services | 2024 |
| Stash Technologies Ltd | Wholesale & retail | 2024 |
| Steadfast Property Holdings Ltd | Construction | 2022 |
| Steelyes Ltd | Manufacturing | 2021 |
| STEP1ONE Limited | Real estate | 2018 |
| Stephen Fortune Consulting Ltd | Professional & scientific | 2016 |
| Sterdy Communications Ltd | Information & communication | 2003 |
| Sterling Foods Ltd | Hospitality | 2018 |
| Stock Property Group Limited | Real estate | 2023 |
| Straight Line Properties Limited | Real estate | 2013 |
| Strategic Accounting Solutions Ltd | Professional & scientific | 2020 |
| Stratella Sports Ltd | Arts & recreation | 2014 |
| Stratinovate Solutions Limited | Information & communication | 2026 |
| Stratus (ENG) Limited | Administrative & support | 2019 |
| Straylight Energy Limited | Professional & scientific | 2024 |
| Streamers Connected Media Ltd | Other services | 2023 |
| Strevens Joinery Ltd | Manufacturing | 2023 |
| Stride Plumbing & Heating Ltd | Construction | 2018 |
| Stuff Limited | Wholesale & retail | 1995 |
| Styled by Jodie Limited | Wholesale & retail | 2025 |
| Styled by Susie Limited | Other services | 2019 |
| Styled Right Ltd | Other services | 2023 |
| Sulbo Limited | Professional & scientific | 2024 |
| Sultra Productions Limited | Arts & recreation | 2003 |
| Summit Homes Limited | Construction | 1964 |
| Summit M&E Solutions Limited | Construction | 2025 |
| Super Squirrel Ltd | Information & communication | 2025 |
| Superior Scooters Ltd | Wholesale & retail | 2024 |
| Supremacy Connected Limited | Administrative & support | 2016 |
| Supreme Roofing and Construction Limited | Construction | 2017 |
| Supreme Sport & Camps Ltd | Arts & recreation | 2022 |
| Surrey and Sussex Stoves Ltd | Administrative & support | 2025 |
| Surrey Business Partnership LLP | | 2016 |
| Surrey Demolition & Plant Hire Ltd | Construction | 2025 |
| Surrey Event Planners Limited | Hospitality | 2025 |
| Surrey Greens Ltd | Wholesale & retail | 2025 |
| Surrey Homes & Gardens Limited | Administrative & support | 2022 |
| Surrey IT Services Limited | Information & communication | 2016 |
| Surrey Kitchen Facelift Ltd | Manufacturing | 2025 |
| Surrey Knee Clinic Limited | Health & social care | 2014 |
| Surrey Land Limited | Real estate | 2014 |
| Surrey Martial Arts Ltd | Arts & recreation | 2023 |
| Surrey Offroad Specialists Limited | Wholesale & retail | 1989 |
| Surrey Studios Limited | Information & communication | 2019 |
| Surrey Supported Living Ltd | Health & social care | 2023 |
| Surrey Zinc Roofing Ltd | Construction | 2015 |
| Surveyors of Surrey Ltd | Professional & scientific | 2024 |
| Sussex Fire Protection Ltd | Public administration | 2021 |
| Sussex Forge Limited | Administrative & support | 1955 |
| Sussex Loft Rooms Limited | Construction | 2012 |
| Sustainable Markets Ltd | Professional & scientific | 1999 |
| Sutton High Street Ltd | Construction | 2022 |
| Suzaku Izakaya Holding Limited | Hospitality | 2025 |
| Suzaku Izakaya Limited | Hospitality | 2025 |
| SV Properties Limited | Real estate | 2021 |