| Shepperton Property Investments Limited | Real estate | 2024 |
| Shiv Shakti NGO | Health & social care | 2019 |
| Shivaay UK Properties Limited | Real estate | 2020 |
| Sidhu Consultants Ltd. | Other services | 2011 |
| Simms Services Limited | Administrative & support | 2024 |
| Simran Convenience UK Limited | Wholesale & retail | 2018 |
| Skinlogix London Limited | Other services | 2021 |
| Skinmedic London Limited | Other services | 2022 |
| Skinmedics London Limited | Other services | 2022 |
| Smart Cube Consultancy Limited | Information & communication | 2019 |
| Smart Utility Solutions Ltd | Wholesale & retail | 2012 |
| Smiths Farm Limited | Real estate | 2023 |
| SMK Prop Limited | Real estate | 2018 |
| Snowflake Housing Association Ltd | Hospitality | 2020 |
| Sodhi Enterprise UK Limited | Wholesale & retail | 2016 |
| Soufee Limited | Wholesale & retail | 2026 |
| Souni Estates Ltd | Real estate | 2019 |
| Southall Sewa Services | Transport & logistics | 2020 |
| Speedy Airport Services Ltd | Other services | 2011 |
| Spurfoods Ltd | Wholesale & retail | 2021 |
| SRK Convenience Store Limited | Wholesale & retail | 2016 |
| SRK Food & Wine Limited | Wholesale & retail | 2016 |
| SRK Prop Investments Limited | Real estate | 2023 |
| SRK Ventures Limited | Real estate | 2018 |
| SS11 Ltd | Real estate | 2023 |
| STAG2STAGE Limited | Administrative & support | 2019 |
| Starlight Real Estates Limited | Real estate | 2021 |
| Stuart Peter Mills Ltd | Construction | 2017 |
| Superb Wholesale Limited | Wholesale & retail | 2019 |
| Surbiton Homeware Store Limited | Wholesale & retail | 2024 |
| Surefit Ceiling Tiles Limited | Wholesale & retail | 2013 |
| Sutton Wines Hillingdon Limited | Wholesale & retail | 2024 |
| SV Store Limited | Wholesale & retail | 2020 |
| Swansong Chauffeurs Ltd | Transport & logistics | 2025 |
| Synergie Counselling Services Limited | Health & social care | 2008 |
| Syzygy Advisers Ltd | Professional & scientific | 2019 |
| T&T Stores Limited | Wholesale & retail | 2022 |
| T1 Digital Consulting Limited | Information & communication | 2020 |
| T1 Digital Consultants Limited | Professional & scientific | 2018 |
| TAJ Property Investments Ltd | Real estate | 2019 |
| Talwar Construction Ltd | Construction | 2014 |
| Tash Investments Limited | Real estate | 2020 |
| Taste of Village Slough Ltd | Hospitality | 2026 |
| Tathagata PTE Limited | Information & communication | 2014 |
| Tatva Private Limited | Information & communication | 2023 |
| Tecbow Ltd | Professional & scientific | 2010 |
| TEE JAY Traders Limited | Wholesale & retail | 2016 |
| Templeland Holdings Limited | Real estate | 2025 |
| THE Barfi Box Limited | Wholesale & retail | 2021 |
| THE OCC Dining Limited | Hospitality | 2023 |
| THE Rack and Cable Company UK Limited | Information & communication | 2015 |
| Theale Convenience Store Limited | Wholesale & retail | 2014 |
| Think Real Estate Ltd | Real estate | 2021 |
| Tomar's Radiant Limited | Real estate | 2025 |
| Tomay Limited | Hospitality | 2023 |
| Top One Traders Ltd | Wholesale & retail | 2019 |
| Topalov 2025 Ltd | Construction | 2020 |
| TRE Finance Ltd | Professional & scientific | 2020 |
| Tristan James Ltd | Wholesale & retail | 2011 |
| TSC Enterprises Limited | Administrative & support | 2017 |
| TSC Traders Limited | Wholesale & retail | 2015 |
| U K Refrigeration Ltd | Manufacturing | 2020 |
| UB4 Motors Ltd | Wholesale & retail | 2025 |
| UKC Enterprises Limited | Real estate | 2017 |
| UMT Advisors Ltd | Administrative & support | 2014 |
| Upbrook Associates Ltd | Real estate | 2022 |
| US9 Developers Limited | Real estate | 2020 |
| Uxbridge Masonic Hall Limited | Other services | 1947 |
| Vape Tech Group Limited | Wholesale & retail | 2016 |
| Veer Food & Wine Limited | Wholesale & retail | 2016 |
| Veer Jewellers Ltd | Wholesale & retail | 2008 |
| VIK Transport Ltd | Transport & logistics | 2024 |
| Virtuemart Ltd | Wholesale & retail | 2025 |
| Vision Link Electronics Ltd | Manufacturing | 2007 |
| Vivaan Homes Limited | Real estate | 2018 |
| Watford Convenience Store Limited | Wholesale & retail | 2015 |
| Watford Food & Wine Store Limited | Wholesale & retail | 2019 |
| Wayne & Co Estates Ltd | Real estate | 2025 |
| West Drayton Limited | Construction | 2013 |
| West London Autos Servicing Limited | Wholesale & retail | 2023 |
| West London Flooring Ltd | Construction | 2013 |
| West London Site Ltd | Real estate | 2023 |
| Wexham Sweets Limited | Wholesale & retail | 2023 |
| Willow END Residents (Northwood) Limited | Households | 1992 |
| WMK Grab Hire Ltd | Water & waste | 2026 |
| Wordy & Wild Ltd | Wholesale & retail | 2025 |
| Woud Care Limited | Health & social care | 2025 |
| XO Wine Merchants Ltd | Wholesale & retail | 2014 |
| XYZ Recuirtment Ltd | Administrative & support | 2025 |
| Your Local Fruit and VEG Limited | Wholesale & retail | 2026 |
| Yukay Ltd | Wholesale & retail | 2021 |
| YUM Sing Limited | Hospitality | 2026 |
| Zabka London Limited | Wholesale & retail | 2016 |
| Zallium Traders Ltd | Wholesale & retail | 2008 |
| Zara Gems Ceylon Limited | Wholesale & retail | 2018 |
| Zeera Trading Ltd | Hospitality | 2015 |
| Zinga FS Limited | Financial services | 2021 |