| Spear Business Services Ltd | Construction | 2016 |
| Spear Property Management Ltd | Real estate | 2019 |
| Spectrum Print and Creative Services Ltd | Other services | 2007 |
| Spectrum Visas Ltd | Professional & scientific | 2017 |
| Speedie Maintenance Ltd | Administrative & support | 2015 |
| Speedyt Ltd | Health & social care | 2022 |
| Spice Onamika Ltd | Hospitality | 2019 |
| Spit Technologies Limited | Information & communication | 2012 |
| Sport Treasure London Ltd | Wholesale & retail | 2020 |
| Sporty Stars ASC Ltd | Arts & recreation | 2023 |
| Sporty Stars London Ltd | Arts & recreation | 2022 |
| Spot on Cleaning Ltd. | Administrative & support | 2022 |
| Spreet Ltd | Health & social care | 2024 |
| Spri Foods Limited | Wholesale & retail | 2015 |
| Square Atlas Property Ltd | Construction | 2024 |
| Squeeze GUT Alley Limited | Households | 2014 |
| Sraya Solutions Ltd | Information & communication | 2022 |
| SRE Partners Ltd | Hospitality | 2024 |
| Sreestech IT Services Ltd | Information & communication | 2013 |
| SRV Consultancy Limited | Information & communication | 2016 |
| SS Khandelwal Limited | Information & communication | 2019 |
| SS Premium Motors Ltd | Wholesale & retail | 2025 |
| SSH ALI Holding Limited | Financial services | 2026 |
| SSH ALI Ltd | Real estate | 2025 |
| SSH PA Limited | Real estate | 2026 |
| Ssme Infotech Limited | Information & communication | 2016 |
| SSS Consulting Limited | Professional & scientific | 2010 |
| ST Catherine's Catholic School | Education | 2011 |
| ST. Anderson Consultancy Limited | Real estate | 2020 |
| Staden Consulting Ltd | Professional & scientific | 2024 |
| STAMP3D Ltd | Wholesale & retail | 2024 |
| Stana Lett(Ings) CIC | Real estate | 2025 |
| Stanchion Services Limited | Transport & logistics | 2018 |
| Stark Group Limited | Financial services | 2022 |
| Steads Retail Limited | Wholesale & retail | 2006 |
| Steels ARE Steel Ltd | Manufacturing | 2022 |
| Stefan 1SERVICES Limited | Construction | 2020 |
| Stepa Contractors Ltd | Construction | 2020 |
| Stephen J. Burton Limited | Financial services | 2003 |
| Steptoe Flooring Ltd | Construction | 2025 |
| Sterling Roofing & Guttering Ltd | Construction | 2026 |
| Stlk Investment Limited | Real estate | 2023 |
| Stokes Services Limited | Construction | 2025 |
| Stone in My Boot Counselling Ltd | Health & social care | 2022 |
| Stone in My Boot Ltd | Health & social care | 2022 |
| Stone in My Boot Walking Therapy Ltd | Health & social care | 2022 |
| Stonewell Capital Ltd | Financial services | 2012 |
| Stony Investments Ltd | Real estate | 2022 |
| Stratgate Limited | Information & communication | 2010 |
| Stratos Clean Ltd | Administrative & support | 2025 |
| Stratos European Policy Limited | Professional & scientific | 2003 |
| Stride Flow Ltd | Wholesale & retail | 2024 |
| Strike Legal Ltd | Extraterritorial | 2025 |
| Strong Starts Children’S Services Ltd | Health & social care | 2025 |
| Structural Steel Systems Limited | Manufacturing | 1997 |
| Struxure Ltd | Households | 2025 |
| Stuchbery Investments Limited | Financial services | 2000 |
| Student Management Services (Kent) Limited | Education | 2012 |
| Studio YCS Ltd | Professional & scientific | 2025 |
| Stylezofelite Ltd | Other services | 2025 |
| Sukhdev Builders Limited | Construction | 2016 |
| Sukhsheen Films Ltd | Manufacturing | 2022 |
| Summerhouse Fish and Chips Ltd | Hospitality | 2025 |
| Sunday Stores Limited | Hospitality | 2025 |
| Super Alpha Limited | Information & communication | 2014 |
| Super Start 3 Limited | Education | 2020 |
| Super Support Ltd | Health & social care | 2015 |
| Surfaces by Pacific Ltd | Wholesale & retail | 2022 |
| Surveyline UK Limited | Professional & scientific | 2000 |
| Surya Property Limited | Real estate | 2024 |
| Sussex Road Holdings Ltd | Real estate | 2016 |
| Sutton Village Store Ltd | Wholesale & retail | 2026 |
| SW Gifts Limited | Wholesale & retail | 2018 |
| Swanley Station Taxis & Cars Limited | Transport & logistics | 2024 |
| Synclogic Solutions Limited | Information & communication | 2019 |
| Synergise 212 Ltd | Hospitality | 2025 |
| Synergy Solutions Consulting Ltd | Information & communication | 2024 |
| T & T Hair Salon Limited | Other services | 2020 |
| T J Mcquillan Limited | Construction | 2017 |
| T.J. Delivery Services UK Ltd | Transport & logistics | 2026 |
| T.Ogar Health Care Ltd | Health & social care | 2022 |
| Tabpharm Ltd | Wholesale & retail | 2011 |
| Taiba Traders International Limited | Wholesale & retail | 2026 |
| Taimosod Limited | Health & social care | 2010 |
| Talent Trick Consulting Limited | Administrative & support | 2023 |
| Talha Financial Consultancy Ltd | Professional & scientific | 2023 |
| Talk Training Consultancy Ltd | Information & communication | 2011 |
| TAM (UK) Ltd | Wholesale & retail | 2014 |
| Tandag Limited | Hospitality | 2019 |
| Tanning Nail Bar UK Ltd | Other services | 2018 |
| Tanvi & TEJ Limited | Real estate | 2020 |
| Taran Consulting Limited | Information & communication | 2008 |
| Target Legal Limited | Administrative & support | 2019 |
| Taste of Samarkand Ltd | Hospitality | 2024 |
| Tavishi Ltd | Information & communication | 2026 |
| Tax Mantra Ltd | Professional & scientific | 2021 |
| Taxkeeping UK Ltd | Professional & scientific | 2020 |
| Taye and Kenny Ltd | Real estate | 2026 |
| Taylor Made Windows & Doors Limited | Construction | 2011 |
| Taylor Sinclair Ltd | Construction | 2025 |