| Streatfields Limited | Construction | 2000 |
| Street & Co Limited | Professional & scientific | 2013 |
| Stride Developments Ltd | Construction | 2024 |
| Strm Ltd | Administrative & support | 2023 |
| Strong Families, Healthy Futures CIC | Health & social care | 2026 |
| Structiv Group Ltd | Construction | 2025 |
| Structural Technical Services Limited | Administrative & support | 2016 |
| STS Marketing Ltd | Professional & scientific | 2025 |
| STS Switchgear and Control Limited | Manufacturing | 2015 |
| Studio Brows Academy Ltd | Other services | 2025 |
| Studio Brows by Ellie Ltd | Other services | 2023 |
| Studio Danmole Limited | Administrative & support | 2021 |
| Studio Stcm Ltd | Professional & scientific | 2025 |
| Study Tours and Services Ltd | Education | 2008 |
| Stupa Inn Limited | Hospitality | 2023 |
| Sturdee Club Developments (Kent) Limited | Construction | 2026 |
| Sturdey Motor Cycles Limited | Wholesale & retail | 1983 |
| STW Properties Ltd | Real estate | 2025 |
| Style Hats Ltd | Wholesale & retail | 2025 |
| Styled-By-Tee Ltd | Other services | 2025 |
| Subcoal Production TSP Ltd | Manufacturing | 2017 |
| Subhrodipa Healthcare Ltd | Health & social care | 2026 |
| Sublime Retail Display Limited | Wholesale & retail | 2011 |
| Success 2B Limited | Education | 2024 |
| Successful TAI Ltd | Wholesale & retail | 2025 |
| Suerose Motors Limited | Wholesale & retail | 1966 |
| SUK Limited | Wholesale & retail | 2015 |
| Sukam Limited | Information & communication | 2019 |
| Sukantra Solutions Limited | Information & communication | 2026 |
| Sularoma Ltd | Information & communication | 2026 |
| Sulh Courtlands PS Ltd | Real estate | 2022 |
| Sulh Finance Ltd | Construction | 2017 |
| Sulh Plantation Wharf PS Ltd | Construction | 2018 |
| Sulh Securities & Investments Ltd | Construction | 2016 |
| Sulh Sevenoaks PS Ltd | Construction | 2024 |
| Sulh Trading Ltd | Construction | 2016 |
| Sulh Yelverton Invest Ltd | Construction | 2018 |
| Sulhill Limited | Construction | 2025 |
| Sulisha Stores Ltd | Wholesale & retail | 2026 |
| Sultan Merchant Ltd | Wholesale & retail | 2024 |
| Sumanat Beauty & Body Treatment Ltd | Health & social care | 2015 |
| Summer Treat Ltd | Wholesale & retail | 2026 |
| Summerfield Academy Limited | Real estate | 2013 |
| Summit Wealth Ltd | Financial services | 2019 |
| Sundara Farm Ltd | Agriculture & fishing | 2025 |
| Sundara PVT Ltd | Construction | 2019 |
| Sundarban Cargo Services UK Limited | Other services | 2022 |
| Sundarban Entities Limited | Real estate | 2024 |
| Sundaze PR Ltd | Professional & scientific | 2023 |
| Sundial Backup Services Limited | Information & communication | 2012 |
| Sundridge Investments Ltd | Real estate | 2008 |
| Sunflower Studio Cafe Ltd | Hospitality | 2025 |
| Sunitek Limited | Financial services | 2016 |
| Sunlite Recruitment Company Limited | Administrative & support | 2014 |
| SUNLITE4U Company Ltd | Extraterritorial | 2019 |
| Sunnydan GAS and Plumbing Solutions Ltd | Construction | 2018 |
| Sunnydene Estates Limited | Real estate | 2012 |
| Sunola Logistics and Procurement Ltd | Transport & logistics | 2026 |
| Sunshine & ME Limited | Wholesale & retail | 2026 |
| Super Start 2 Limited | Education | 2020 |
| Superior Logic Limited | Real estate | 2021 |
| Supermoon Healthcare Ltd | Health & social care | 2022 |
| SUPERRICH88 Group Ltd | Hospitality | 2023 |
| Supersoulseller Ltd | Wholesale & retail | 2020 |
| Supplies 4 YOU Limited | Wholesale & retail | 2020 |
| Supply Staffing 247 Ltd | Administrative & support | 2023 |
| Supportsolve Ltd | Health & social care | 2025 |
| Supra Health Ltd | Health & social care | 2025 |
| Supreme Carpets (Kent) Ltd | Wholesale & retail | 2018 |
| Supreme Dance Competition Ltd | Arts & recreation | 2020 |
| Supreme Fibre Ltd | Information & communication | 2024 |
| Supreme Travels and Logistics Limited | Administrative & support | 2023 |
| Sure & Secure Ltd | Construction | 2016 |
| Sure Build Contractors Ltd | Construction | 2025 |
| Surface Tiling Ltd | Construction | 2019 |
| Surge Electrical Solutions Ltd | Construction | 2019 |
| Surgery Pro Health Ltd | Health & social care | 2010 |
| Surgianos London Road Property Ltd | Real estate | 2023 |
| Surgical Colorectal Care Ltd | Health & social care | 2019 |
| Suri Technologies Ltd | Information & communication | 2014 |
| Surrey Lifts Limited | Manufacturing | 2009 |
| Surrey Quality Care Services Limited | Health & social care | 2015 |
| Surrey Recycling Services Ltd | Construction | 2020 |
| Surya Homes Limited | Real estate | 2020 |
| Surya Tech Solutions Limited | Information & communication | 2020 |
| Susie Bennett Property Limited | Construction | 2018 |
| Suspath International (UK) Ltd | Water & waste | 2017 |
| Suspath UK Ltd | Water & waste | 2010 |
| Sustainable Garden Tech Limited | Information & communication | 2020 |
| Sustainatrade Ltd | Professional & scientific | 2021 |
| Suthar Interiors Limited | Manufacturing | 2025 |
| Suttill Services Ltd | Other services | 2021 |
| Suvango Technology Ltd | Information & communication | 2019 |
| Suzanne Abraham Art Limited | Extraterritorial | 2023 |
| SV IT Services Ltd | Information & communication | 2017 |
| Svaras UK Ltd | Construction | 2018 |
| SVG Business Info Ltd | Information & communication | 2017 |
| Svlt Properties Limited | Real estate | 2020 |
| SVV Homes Ltd | Real estate | 2023 |
| SW Brummitt Holdings Limited | Financial services | 2022 |