| Stars-Alliance Heritage Sports Limited | Arts & recreation | 2023 |
| Start Muffler Auto Parts Co., Ltd | Manufacturing | 2025 |
| Startracer Limited | Professional & scientific | 2024 |
| Starvans Meida Ltd | Wholesale & retail | 2025 |
| Starwave Global Limited | Professional & scientific | 2026 |
| Starwill Trading Co., Ltd. | Administrative & support | 2023 |
| Starworld Technology Ltd | Wholesale & retail | 2025 |
| Staryue Trade Limited | Wholesale & retail | 2025 |
| Statement Black Limited | Professional & scientific | 2016 |
| STATUS100 Promotions Ltd | Arts & recreation | 2020 |
| Stave Assets Limited | Real estate | 2021 |
| Stay Wild Travel Ltd | Administrative & support | 2025 |
| Stayaheadcoaching CIC | Education | 2026 |
| Staynomad Ltd | Hospitality | 2025 |
| STB E-Commerce Ltd | Wholesale & retail | 2025 |
| STC Worldwise Co., Limited | Wholesale & retail | 2026 |
| Steady Wheel Transport Ltd | Transport & logistics | 2025 |
| Stecipe Ltd | Wholesale & retail | 2025 |
| Steclod Ltd | Arts & recreation | 2025 |
| Steel Brew (SW) Ltd | Manufacturing | 2022 |
| Steel Stream Limited | Wholesale & retail | 2025 |
| Steelrise Installations Ltd | Construction | 2026 |
| Stelimasa Energy Limited | Information & communication | 2026 |
| Stella LUX Limited | Wholesale & retail | 2026 |
| Stella Luxion Limited | Wholesale & retail | 2026 |
| Stellapin Ltd | Wholesale & retail | 2025 |
| Stellar Ring Limited | Wholesale & retail | 2025 |
| Stellar Stay Properties Limited | Real estate | 2019 |
| Stellar Trade Flow Limited | Professional & scientific | 2025 |
| Stellarcross Ltd | Wholesale & retail | 2025 |
| Stellarglen Ltd | Wholesale & retail | 2025 |
| Stellarhive Ltd | Wholesale & retail | 2026 |
| Stellarion Ltd | Wholesale & retail | 2025 |
| Stellarpeak Ltd | Wholesale & retail | 2025 |
| Stellarshift Ltd | Wholesale & retail | 2025 |
| Stellarwave Media Ltd | Arts & recreation | 2025 |
| Stemison Ltd | Wholesale & retail | 2025 |
| Step Block Women Ltd | Wholesale & retail | 2025 |
| Stepinto Group Ltd | Construction | 2017 |
| Steppy UK Limited | Education | 2018 |
| Sterion Innovation Ltd | Water & waste | 2024 |
| Sterling Build & Construction Ltd | Construction | 2026 |
| Sterling Lodging Limited | Financial services | 2006 |
| Stessa 3006 Ltd | Real estate | 2014 |
| Stessa Investments Limited | Administrative & support | 2016 |
| Stev Trade Ltd | Transport & logistics | 2019 |
| Stewart's Laboratory Limited | Wholesale & retail | 2025 |
| STH Dfxtrdx Trading Limited | Wholesale & retail | 2025 |
| Stiggylee Creations Ltd | Professional & scientific | 2024 |
| Still Game Fieldcraft Ltd | Agriculture & fishing | 2022 |
| Stirling Flow Traders Ltd | Wholesale & retail | 2025 |
| Stitch Syndicate Ltd | Manufacturing | 2025 |
| STK Corporate Stays Ltd | Real estate | 2026 |
| Stkrs Ltd | Wholesale & retail | 2025 |
| Stobeta Limited | Financial services | 2022 |
| Stone Gate Stays Ltd | Hospitality | 2026 |
| Stone Vault Ltd | Real estate | 2025 |
| Stonehill Labs Limited | Information & communication | 2026 |
| Stonelle Ltd | Manufacturing | 2025 |
| Stonemere LLP | | 2025 |
| Stonemond Clovis Ltd | Wholesale & retail | 2025 |
| Stonepire Ltd | Wholesale & retail | 2025 |
| Stonerealm Holdings Ltd | Information & communication | 2025 |
| Stonewall Property Holdings Limited | Real estate | 2021 |
| STOREOFDI93 Ltd | Wholesale & retail | 2025 |
| Stories From NO5 Ltd | Information & communication | 2026 |
| Storiq GYQ Ltd | Wholesale & retail | 2025 |
| Storma Service Solutions Ltd | Households | 2025 |
| Stormforged Ltd | Arts & recreation | 2026 |
| Storymaster AI Ltd | Information & communication | 2025 |
| Stpmedia Ltd | Information & communication | 2018 |
| Strarms Ltd | Hospitality | 2026 |
| Strategic Business Consultants Limited | Professional & scientific | 2021 |
| Strategic Corporate Solutions Limited | Professional & scientific | 2017 |
| Strategic Property Consolidated Ltd | Real estate | 2014 |
| Strategic Transport Partners Ltd | Transport & logistics | 2026 |
| Strategic Visual Ltd | Professional & scientific | 2019 |
| Stratfield Innovations Ltd | Wholesale & retail | 2025 |
| Stratford Place Management Company Limited | Households | 1988 |
| Stratfsnd Cyberyat Ltd | Manufacturing | 2025 |
| Strathubbiz Trading Limited | Wholesale & retail | 2026 |
| Stratifyx Trade Co., Ltd | Wholesale & retail | 2025 |
| Strativox Ltd | Wholesale & retail | 2024 |
| Stratlinc Ltd | Administrative & support | 2026 |
| Stratos Supply Ltd | Wholesale & retail | 2025 |
| Stratoshive Co., Limited | Wholesale & retail | 2025 |
| Stratton Security (2024) Ltd | Administrative & support | 2024 |
| Strawb Productions Ltd | Information & communication | 2007 |
| Strawberry Investments Limited | Real estate | 2007 |
| Streamco Limited | Information & communication | 2023 |
| Street Meet Ltd | Information & communication | 2021 |
| Stridewell Foot Clinic Ltd | Health & social care | 2025 |
| Stridewise Trading Co., Ltd | Wholesale & retail | 2025 |
| Strikly Vibez Ltd | Hospitality | 2025 |
| Strivo Global Group Ltd | Professional & scientific | 2025 |
| Strix Viral Ltd | Arts & recreation | 2025 |
| Strixion Holding UK Limited | Information & communication | 2025 |
| Stronger Than Your Limits CIC | Health & social care | 2025 |
| Stronghold Workshop Ltd | Information & communication | 2022 |
| Stuart James Developments Limited | Real estate | 2021 |