| Speedy Recovery Ltd | Wholesale & retail | 2026 |
| Spick and Spice Ltd | Wholesale & retail | 2017 |
| Spirada Candle Flame Ltd | Manufacturing | 2025 |
| Spirada Motor Ltd | Wholesale & retail | 2025 |
| Splice London Ltd | Information & communication | 2015 |
| Sport Karate Coalition Ltd | Arts & recreation | 2016 |
| Sporty Zone 22 Ltd | Arts & recreation | 2023 |
| Spring Grove Hounslow Ltd | Real estate | 2024 |
| Sprinters-Couriers Ltd | Wholesale & retail | 2021 |
| SPV Founders Homes Limited | Real estate | 2023 |
| Square and Circle Productions Ltd | Professional & scientific | 2021 |
| SR Lanchawa Limited | Wholesale & retail | 2024 |
| SRI Flyvel Ltd | Administrative & support | 2023 |
| Sritec Ltd | Wholesale & retail | 2023 |
| Srkal Ltd | Wholesale & retail | 2025 |
| SRS (UK) Haulage Limited | Construction | 2014 |
| SRS Builders and Contractors Ltd | Construction | 2021 |
| SRS Expert Roofing Ltd | Construction | 2025 |
| SRS London Properties Ltd | Real estate | 2021 |
| SRV Ventures Ltd | Arts & recreation | 2026 |
| SSB Automotive Limited | Wholesale & retail | 2022 |
| SSD Devon Ltd | Hospitality | 2022 |
| Sshp Sales Ltd | Wholesale & retail | 2021 |
| SSL Healthcare Ltd | Other services | 2010 |
| SSS and K PVT Ltd | Hospitality | 2019 |
| SSS Properties MK Ltd | Real estate | 2019 |
| Sssb Property Ltd | Real estate | 2025 |
| Sssj Property Ltd | Real estate | 2026 |
| ST Kilda W7 Ltd | Households | 2022 |
| ST Visioncare Ltd | Health & social care | 2026 |
| ST. Clair Associates Limited | Professional & scientific | 2025 |
| Stags R US Ltd | Construction | 2025 |
| Staha International Ltd | Real estate | 2019 |
| Stallion Acquisitions Limited | Professional & scientific | 2014 |
| Stallion House Ltd | Information & communication | 2024 |
| Stalownia Ltd | Administrative & support | 2016 |
| Star Commodity Ltd | Wholesale & retail | 2021 |
| Star Print London Limited | Manufacturing | 2017 |
| Star Retail Ltd | Wholesale & retail | 2023 |
| Starweld Ltd | Professional & scientific | 2022 |
| Statistical Consultancy Service Ltd | Professional & scientific | 2016 |
| Stawbuild Limited | Construction | 2015 |
| Stay Safe Food Safety 1 Ltd | Professional & scientific | 2024 |
| Steamz Auto Detailing Ltd | Other services | 2025 |
| Steelena Limited | Construction | 2015 |
| Stella Elizabeth Harding Ltd | Extraterritorial | 2022 |
| Stellarbargain Ltd | Wholesale & retail | 2020 |
| Steps Builders Ltd | Construction | 2021 |
| Sterling N3 Contractors Ltd | Construction | 2020 |
| Sterlingo Limited | Wholesale & retail | 2026 |
| Stfmz Ltd | Professional & scientific | 2025 |
| STL Retail Ltd | Wholesale & retail | 2024 |
| STN Retail Limited | Wholesale & retail | 2019 |
| Stoe Ltd | Transport & logistics | 2016 |
| STR8UP Limited | Health & social care | 2019 |
| Stradeswestlondon Ltd | Construction | 2018 |
| Strategem Consultants Limited | Wholesale & retail | 2014 |
| Street Sign Ltd | Construction | 2022 |
| Stride Commercial Ltd | Real estate | 2026 |
| Stronex Group Ltd | Wholesale & retail | 2025 |
| Strrp GP PVT Ltd | Health & social care | 2019 |
| Studio 44 Hair & Nails Ltd | Other services | 2021 |
| Subhu Construction Ltd | Construction | 2021 |
| Suerte Pharma Limited | Wholesale & retail | 2016 |
| Suitespot Properties Ltd | Real estate | 2025 |
| Sukpreet Supermarket Ltd | Wholesale & retail | 2022 |
| Sulko Construction Ltd | Construction | 2017 |
| Sully Cars Ltd | Information & communication | 2024 |
| Sultan Co Services Ltd | Information & communication | 2023 |
| Summerine Zenith Ltd | Real estate | 2024 |
| Sumptuoscakes Ltd | Wholesale & retail | 2023 |
| Sun Flora Metals Ltd | Wholesale & retail | 2021 |
| Sunny Fresh Foods Ltd | Wholesale & retail | 2022 |
| Sunnysdale Ltd | Other services | 2023 |
| Sunview Properties London Ltd | Real estate | 2025 |
| Sunway Care Ltd | Health & social care | 2025 |
| Super CUT Barbers Ltd | Other services | 2024 |
| Super Hygiene Cleaners Ltd | Administrative & support | 2024 |
| Superman Logistics Limited | Transport & logistics | 2024 |
| Surf 11 Ltd | Real estate | 2003 |
| Suriya Global Limited | Wholesale & retail | 2024 |
| Sustainable Accounting Training Ltd | Professional & scientific | 2020 |
| Suthan Retail Ltd | Wholesale & retail | 2018 |
| SVA Medics Ltd | Professional & scientific | 2022 |
| SVG Corporation Ltd | Wholesale & retail | 2017 |
| Svrk UK Limited | Wholesale & retail | 2025 |
| SVS Management Services Ltd | Professional & scientific | 2025 |
| Swaco Ltd | Hospitality | 2014 |
| Swans Group Ltd | Other services | 2022 |
| Swara Development Ltd | Construction | 2025 |
| Sweet Like Cane Ltd | Wholesale & retail | 2025 |
| Sweet Science Ltd | Arts & recreation | 2006 |
| Swha Foods Ltd | Hospitality | 2024 |
| Swiftdrive Autos Ltd | Wholesale & retail | 2024 |
| Swiss Properties Ltd | Real estate | 2015 |
| Swme Foods Ltd | Hospitality | 2023 |
| Symphony of Colors Ltd | Construction | 2024 |
| Synergy Club Ltd | Professional & scientific | 2025 |
| Synergy Events Group Limited | Arts & recreation | 2025 |
| Synergyxpert Ltd | Information & communication | 2025 |