| Scales & Tales Limited | Education | 2022 |
| Scantrack Limited | Information & communication | 2000 |
| Schnauzer Property Consultants Ltd | Extraterritorial | 2021 |
| Sci-Comm Studios Ltd | Information & communication | 2010 |
| Science Sorted Ltd | Administrative & support | 2025 |
| Score Accounting Ltd | Professional & scientific | 2019 |
| Screen Art Connect Limited | Information & communication | 2013 |
| Scushconsult Ltd | Information & communication | 2016 |
| SD TEL Ltd | Information & communication | 2021 |
| Seagrave Studio Ltd | Information & communication | 2023 |
| Seashore Fish Ltd | Hospitality | 2018 |
| Seasons Art Class Sunbury Limited | Arts & recreation | 2023 |
| Seatreefarms Limited | Agriculture & fishing | 2022 |
| SEC Property Limited | Real estate | 2024 |
| Securities & Credits Limited | Real estate | 1960 |
| Selin Advisory Ltd | Professional & scientific | 2023 |
| Semali Ltd | Real estate | 2026 |
| Sensibal Recruitment Ltd | Administrative & support | 2026 |
| Sentinall Limited | Information & communication | 2013 |
| Sentus Industries Ltd | Information & communication | 2026 |
| Senzu Limited | Wholesale & retail | 2025 |
| SEO Software Ltd | Information & communication | 2011 |
| Sepanta Ltd | Wholesale & retail | 2024 |
| Serenity Surbiton Ltd | Other services | 2021 |
| Seven Hills Property Ventures Ltd | Real estate | 2025 |
| Sevensbt Ltd | Households | 2020 |
| Severance Film Services Limited | Information & communication | 2015 |
| Severance Productions Ltd | Information & communication | 2013 |
| Sexy Fries Limited | Hospitality | 2025 |
| Seydamour Limited | Other services | 2021 |
| Seymour Court Briar Walk Management Company Limited | Households | 2002 |
| Seymour Court West Putney SW15 Management Company Limited | Households | 2004 |
| Sggbuild Limited | Construction | 2017 |
| Shady Bodyworx Ltd | Wholesale & retail | 2021 |
| Shanaa Enterprise Ltd | Hospitality | 2026 |
| Shani Construction Limited | Construction | 2013 |
| Shareforce Limited | Administrative & support | 2010 |
| Shariefi Constructions Limited | Construction | 2013 |
| Shawki Medics Limited | Health & social care | 2008 |
| Shayaan Traders Ltd | Wholesale & retail | 2017 |
| SHC Enterprises Limited | Arts & recreation | 2015 |
| SHD Real Estate Limited | Real estate | 2026 |
| Shelley Court Limited | Households | 1995 |
| Sheridan Decor Limited | Wholesale & retail | 2025 |
| Shiba Photography Ltd | Professional & scientific | 2012 |
| Shifa Care Limited | Health & social care | 2019 |
| Shiftwave Ltd | Education | 2026 |
| Shimi (a Touch of Class) Limited | Other services | 2004 |
| Shine Community Ltd | Public administration | 2023 |
| Shinehub Service Limited | Wholesale & retail | 2026 |
| Shingwedzi Ltd | Real estate | 2020 |
| Ship in Shape Ltd | Wholesale & retail | 2025 |
| Shipdirect Limited | Wholesale & retail | 2025 |
| Shop Nest Ltd | Wholesale & retail | 2020 |
| Shrabani Basu Limited | Other services | 2016 |
| Shree Radhe Krishna Limited | Wholesale & retail | 2025 |
| Shri Gajanan Technologies Limited | Information & communication | 2017 |
| Shrii PVT Ltd | Information & communication | 2018 |
| Shrubbery Residents Association Limited(The) | Households | 1981 |
| Shubaanan & Co Ltd | Health & social care | 2011 |
| Shuhari Limited | Arts & recreation | 2004 |
| Shutters in Tolworth Limited | Manufacturing | 2024 |
| Sigiriya Ltd | Construction | 2020 |
| Sigma Surge Ltd | Information & communication | 2017 |
| Sigmar Development Ltd | Information & communication | 2023 |
| Silent Glades Consulting Limited | Information & communication | 2007 |
| Silksmith Ltd | Wholesale & retail | 2018 |
| Siloam Ltd | Hospitality | 2025 |
| Silver Sentinal Productions Ltd | Information & communication | 2025 |
| Silverine Consulting Limited | Information & communication | 2016 |
| Silverline Fitness Ltd. | Arts & recreation | 2024 |
| Silverstone Holdco Ltd | Financial services | 2026 |
| Silvextribal Limited | Wholesale & retail | 2025 |
| Simibel Accounting Limited | Professional & scientific | 2024 |
| Simibel Limited | Administrative & support | 2021 |
| Simin Beauty Salon Ltd | Other services | 2020 |
| Simpkins Design Ltd | Arts & recreation | 2016 |
| Simple Fruit and VEG Limited | Wholesale & retail | 2019 |
| Simply Bathrooms (Surrey) Limited | Construction | 2012 |
| Simply Sales Traders Ltd | Wholesale & retail | 2024 |
| Simply Wright Aesthetics Ltd | Other services | 2025 |
| Single Access Point Ltd | Information & communication | 2022 |
| Singulx Ltd | Professional & scientific | 2024 |
| Sinton Douglas Ltd | Wholesale & retail | 2025 |
| Sirius Construction Surrey Ltd | Construction | 2015 |
| Sirop Supplies Limited | Wholesale & retail | 2025 |
| Siteserv Facilities Limited | Administrative & support | 2023 |
| SIV Properties Limited | Real estate | 2020 |
| Siva Cash & Carry Limited | Wholesale & retail | 2005 |
| Sivitas Limited | Information & communication | 2023 |
| SIX Seven Studio Ltd | Information & communication | 2018 |
| Sixteen ST. Marks Hill Limited | Households | 1962 |
| SJ Neal Services Limited | Construction | 2014 |
| SJB Construction Surrey Limited | Construction | 1994 |
| SJH Advisory Ltd | Professional & scientific | 2025 |
| Sjkim Solutions Ltd | Other services | 2020 |
| SJP Consulting Group Limited | Professional & scientific | 2025 |
| Sjsrs Limited | Wholesale & retail | 2018 |
| SK Phones & Smokes Limited | Wholesale & retail | 2023 |
| Skaezen Limited | Manufacturing | 2020 |