| Sparks Taekwondo Ltd | Education | 2024 |
| Speed Mobile Mechanic Ltd | Wholesale & retail | 2026 |
| Spellbinding Toys and Games Ltd | Wholesale & retail | 2021 |
| Sphc(Uk) Ltd | Professional & scientific | 2014 |
| Spirisical Limited | Information & communication | 2009 |
| Spob Electrical Services Ltd | Construction | 2021 |
| Springbok IT Ltd | Information & communication | 2015 |
| Squeeze Science Limited | Information & communication | 2011 |
| Squires Building Services Ltd | Construction | 1997 |
| Srlb Entertainment Limited | Hospitality | 2025 |
| Srvfx Ltd | Information & communication | 2023 |
| SSS Solutions Ltd | Professional & scientific | 2015 |
| ST John's Aerospace Trading Limited | Professional & scientific | 2012 |
| ST John's Flooring Limited | Construction | 2014 |
| Stadbury Meadow Car Park Limited | Households | 1986 |
| Starbright Housing Limited | Administrative & support | 2016 |
| Starbright Solutions Ltd | Professional & scientific | 2015 |
| Startline Sport Ltd | Professional & scientific | 2026 |
| Stella Motorsport Limited | Arts & recreation | 2007 |
| Steven H Wright Limited | Professional & scientific | 2014 |
| Stoic Property Ltd | Real estate | 2026 |
| Stone-Martin Limited | Wholesale & retail | 2026 |
| Storm Blue Plus Limited | Real estate | 2024 |
| Strategic Intelligence Systems Limited | Extraterritorial | 2015 |
| Strawberry Bins Limited | Administrative & support | 2023 |
| Strong Nutrients Limited | Administrative & support | 2012 |
| Stylestreet Windows & Doors Ltd | Construction | 2020 |
| Sukma Homes Ltd | Real estate | 2022 |
| Sunbury Services Limited | Administrative & support | 2003 |
| Surrey Bespoke Limited | Manufacturing | 2018 |
| Surrey Building Projects Limited | Construction | 2017 |
| Surrey Car Maintenance Ltd | Wholesale & retail | 2014 |
| Surrey Classics Ltd | Wholesale & retail | 2026 |
| Surrey Coatings Ltd | Manufacturing | 2018 |
| Surrey Electrical Solutions Limited | Construction | 2005 |
| Surrey Roof Windows Limited | Extraterritorial | 2021 |
| Surrey Roofing Service Limited | Construction | 2015 |
| SWD Commissioning Consultants Ltd | Professional & scientific | 2016 |
| Syonica Limited | Information & communication | 2013 |
| System 2000 Windows Limited | Construction | 2003 |
| Tanden Testing Services Limited | Information & communication | 2014 |
| Taurus Delivery Solutions Ltd | Professional & scientific | 2015 |
| Tclc Limited | Other services | 2017 |
| TDS Financial Advisers Ltd | Financial services | 2024 |
| Teamfollow Services Limited | Professional & scientific | 2015 |
| TEC Greens Limited | Administrative & support | 2024 |
| Tech PM Limited | Administrative & support | 2025 |
| Technical Programme Delivery Ltd | Professional & scientific | 2006 |
| Technology in Formation Limited | Information & communication | 2022 |
| Techsquid Limited | Information & communication | 2014 |
| Teddington & Hampton Construction Ltd | Construction | 2022 |
| Tegwynne Goldthorpe Architect Ltd | Professional & scientific | 2021 |
| Tennay Properties Limited | Real estate | 1962 |
| Terra Firma IT Ltd | Information & communication | 2013 |
| Territory Brands UK Ltd | Wholesale & retail | 2022 |
| Tesla Installations Limited | Construction | 2014 |
| Thames Boat House Limited | Administrative & support | 2004 |
| Thames Covers Limited | Manufacturing | 2014 |
| Thames Riverworks Ltd | Construction | 2013 |
| Thames Riverworks Piling Limited | Construction | 2004 |
| Thames Rooms Limited | Construction | 2012 |
| Thames Street Consulting Ltd | Professional & scientific | 2015 |
| Thames West Interiors Limited | Manufacturing | 2020 |
| Thamesfield Court Management Ltd | Real estate | 2009 |
| Thameside.Tv UK LLP | | 2013 |
| Thamesmead School | Education | 2011 |
| THE 5TH P Ltd | Professional & scientific | 2019 |
| THE Comms House Ltd. | Professional & scientific | 2022 |
| THE Culture Wing Ltd | Arts & recreation | 2014 |
| THE Early Weeks Studio Ltd | Education | 2026 |
| THE Ferry Coffee Shop Limited | Hospitality | 2019 |
| THE Ferry Point Holdings Limited | Professional & scientific | 2025 |
| THE Ferry Point Limited | Real estate | 2014 |
| THE Flat That Jack Built Film Services Limited | Construction | 2016 |
| THE Freight Company Global Limited | Transport & logistics | 2007 |
| THE Games Angels Limited | Financial services | 2025 |
| THE Interior Design Company Limited | Construction | 1993 |
| THE Mere FLY Fishing Limited | Agriculture & fishing | 2024 |
| THE Mindful Ninja Ltd | Health & social care | 2020 |
| THE Old Manor House Estate Limited | Real estate | 2010 |
| THE Pine Prodigy Limited | Agriculture & fishing | 2022 |
| THE Shutter & Blind Company Limited | Manufacturing | 2016 |
| THE Solution ZOO Ltd | Professional & scientific | 2001 |
| THE Spark L&D Consultancy Ltd | Professional & scientific | 2024 |
| THE Swan Sanctuary Limited | Professional & scientific | 1997 |
| THE Taste of Sushi Limited | Hospitality | 2025 |
| THE Tonne Gym Ltd | Arts & recreation | 2015 |
| THE Uprisers Limited | Wholesale & retail | 2022 |
| THE Virtual Health Group Ltd | Health & social care | 2025 |
| THE Wabi-Sabi House Ltd | Wholesale & retail | 2021 |
| THE Willows (Charlton) Management Limited | Households | 2007 |
| THE Wool Studios Limited | Wholesale & retail | 2022 |
| Theta Commissioning Services Limited | Professional & scientific | 2018 |
| Thewiserhome Limited | Construction | 2024 |
| Three Point Studio Ltd | Construction | 2021 |
| Thrive Consulting Partners Ltd | Professional & scientific | 2023 |
| Tideway Consulting Solutions Limited | Professional & scientific | 2015 |
| Tiny Spaces Limited | Construction | 2025 |
| Titanium Roofing Limited | Construction | 2025 |
| TMM Financial Solutions Ltd | Administrative & support | 2013 |