| Stoica General Construction Ltd | Administrative & support | 2016 |
| Stoler Project Ltd | Construction | 2024 |
| Stone and Ice Limited | Real estate | 2026 |
| Stone Bake Pizza & Milk Shakes Limited | Hospitality | 2024 |
| Stone Choice Properties Ltd | Real estate | 2020 |
| Stone FOG Ltd | Wholesale & retail | 2025 |
| Stone Inn Bar Ltd | Wholesale & retail | 2018 |
| Stonearc Builders Ltd | Manufacturing | 2026 |
| Stonebridge Executive Chauffeurs Ltd | Transport & logistics | 2024 |
| Stonecrest Marble London Limited | Wholesale & retail | 2011 |
| Stonecrest Marble Properties Limited | Real estate | 2020 |
| Stonedge Ltd | Administrative & support | 2024 |
| Stonewell Consulting Limited | Construction | 2012 |
| Stonewell Holdings Ltd | Real estate | 2022 |
| Stonewell Property 1 Ltd | Real estate | 2022 |
| Stonewell Property 2 Ltd | Real estate | 2021 |
| Stonewood Carpentry & Landscapes Ltd | Professional & scientific | 2019 |
| Stony Inns Ltd | Hospitality | 2015 |
| Stop N Go Local Ltd | Wholesale & retail | 2024 |
| Stop Stalling Driving School Ltd | Education | 2026 |
| Store and Distribute Ltd | Transport & logistics | 2022 |
| STORE65-03 Ltd | Wholesale & retail | 2018 |
| Stories & the City Ltd | Professional & scientific | 2022 |
| Storilabs UK Limited | Information & communication | 2022 |
| Storm Gates Building Ltd | Construction | 2014 |
| Stormex Limited | Professional & scientific | 2015 |
| Stormia Ltd | Wholesale & retail | 2025 |
| Stormsoft Tech Limited | Information & communication | 2026 |
| Stormx Ltd | Real estate | 2022 |
| Story OM Ltd | Professional & scientific | 2024 |
| Storypath Limited | Education | 2020 |
| Stowe Property Ltd | Real estate | 2018 |
| STP Store Ltd | Wholesale & retail | 2025 |
| Stpsis Services Ltd | Construction | 2022 |
| STR Amaravathi Ltd | Hospitality | 2026 |
| Strada Automotive Ltd | Wholesale & retail | 2026 |
| Stradbroke Capital LLP | | 2018 |
| Stradbroke Construction Ltd | Construction | 2020 |
| Stradbroke Developments Limited | Real estate | 2016 |
| Stradbroke Group Ltd | Professional & scientific | 2025 |
| Stradbroke London Ltd | Real estate | 2023 |
| Straight 6IX Autowerkes Ltd | Wholesale & retail | 2021 |
| Straight Arch Ltd | Construction | 2011 |
| Straight Path Property Management Limited | Real estate | 2025 |
| Straight Services Limited | Other services | 2017 |
| Strandhaven Limited | Wholesale & retail | 1979 |
| Strandhaven Properties Limited | Real estate | 2008 |
| Stratan Construction Ltd | Construction | 2022 |
| Stratavis Engineering Ltd | Professional & scientific | 2024 |
| Strategic Growth Investments Ltd | Financial services | 2024 |
| Strategic Planners Ltd | Professional & scientific | 2024 |
| Strategic Property Developments Ltd | Other services | 2015 |
| Strategic Property First Ltd | Real estate | 2014 |
| Strategic Strike Coaching Ltd | Education | 2025 |
| Strategic Workforce Development Ltd | Professional & scientific | 2025 |
| Stratford Close Ltd | Real estate | 2025 |
| Stratford Consultancy Limited | Professional & scientific | 2022 |
| Stratford Food Ltd | Other services | 2022 |
| Stratford Hotel Ltd | Hospitality | 2010 |
| Stratford International Estates Limited | Real estate | 2013 |
| Stratford Law Firm Ltd | Professional & scientific | 2023 |
| Stratford Water Lane Limited | Real estate | 2022 |
| Stratmeta Ltd | Information & communication | 2025 |
| Stratsmore (Freeholds) Limited | Real estate | 2023 |
| Stratsmore Construction Ltd | Construction | 2020 |
| Stratsmore Developments Limited | Construction | 2020 |
| Stratsmore Investments 2 Limited | Construction | 2021 |
| Stratsmore Investments Limited | Construction | 2019 |
| Stratton Kenley Ltd | Information & communication | 2023 |
| Stratton Leigh Limited | Real estate | 2025 |
| Stratu Property Services Ltd | Construction | 2026 |
| Strawberry Gardens Property Ltd | Real estate | 2018 |
| Strawberry Matcha Limited | Hospitality | 2022 |
| Strawbrix Ltd | Construction | 2024 |
| Streams Education & Training CIC | Education | 2026 |
| Street League Tournament Ltd | Arts & recreation | 2025 |
| Streetlights Technologies Ltd | Professional & scientific | 2024 |
| Streetly Medical Consultancy Services Ltd | Health & social care | 2010 |
| Streets of Lahore Ltd | Hospitality | 2025 |
| Streetskope Ltd | Information & communication | 2013 |
| Strevens Place (Loughton) Management Company Limited | Households | 2005 |
| Strigiform Limited | Professional & scientific | 2024 |
| Striide Sports Ltd | Arts & recreation | 2025 |
| Strings Distribution Limited | Wholesale & retail | 2016 |
| Strings Media Limited | Professional & scientific | 2011 |
| Strive System Ltd | Information & communication | 2026 |
| Strn Food & Wine Ltd | Wholesale & retail | 2012 |
| Strnd Ltd | Hospitality | 2024 |
| Stroica Build Construction Ltd | Construction | 2018 |
| Strolt Consult Ltd | Construction | 2019 |
| Strone Digital Ltd | Information & communication | 2026 |
| Strong Earth FI LLP | | 2016 |
| Strong London Limited | Wholesale & retail | 2020 |
| Strong Supply Limited | Wholesale & retail | 2023 |
| Strserv Limited | Wholesale & retail | 2024 |
| Structuron Ltd | Wholesale & retail | 2026 |
| Struktura Consulting Ltd | Construction | 2018 |
| Stryke Social Ltd | Professional & scientific | 2026 |
| STS Food Limited | Hospitality | 2019 |
| Stuart Maurice Ltd | Professional & scientific | 2016 |