| Streatham Launch Pads Limited | Real estate | 2025 |
| Street Mortgages & Protection Ltd | Financial services | 2014 |
| Strengite Limited | Administrative & support | 2020 |
| Strengthrocks Personal Development Ltd | Education | 2017 |
| Strensall Telecom Ltd | Professional & scientific | 2015 |
| Strive Multi-Sports Coaching Limited | Education | 2024 |
| Strive Security Ltd | Administrative & support | 2019 |
| Structworks Ltd | Construction | 2022 |
| STS Building Limited | Construction | 2006 |
| Stsc Trading Ltd | Arts & recreation | 2020 |
| Stuart Higgins Media Limited | Professional & scientific | 2013 |
| Stuart Thomson Media Ltd | Information & communication | 2024 |
| Studio a Ltd | Professional & scientific | 2025 |
| Studio Bonbon Limited | Professional & scientific | 2023 |
| Studio Elle Ltd | Professional & scientific | 2024 |
| Studio GT Ltd | Arts & recreation | 2017 |
| Studio Ingenium Ltd | Professional & scientific | 2021 |
| Studio New Limited | Construction | 2023 |
| Stuff & Bite Food Group Limited | Hospitality | 2025 |
| Stunz Holdings Limited | Real estate | 2022 |
| Style Building Group Ltd | Construction | 2018 |
| Styleandcare Ltd | Wholesale & retail | 2026 |
| Stylishshape Limited | Administrative & support | 2019 |
| Subali Investments Limited | Real estate | 2016 |
| Suben Construction Ltd | Construction | 2017 |
| Subsalient Ltd | Education | 2024 |
| Subsea 7 Crewing Limited | Other services | 1973 |
| Subsea 7 Engineering Limited | Administrative & support | 2006 |
| Subsea 7 Finance (UK) PLC | Administrative & support | 2014 |
| Subsea 7 Holdings (UK) Limited | Financial services | 2011 |
| Subsea 7 International Contracting Limited | Construction | 1995 |
| Subsea 7 International Holdings (UK) Limited | Administrative & support | 2014 |
| Subsea 7 Limited | Mining & quarrying | 2001 |
| Subsea 7 Offshore Resources (UK) Limited | Mining & quarrying | 2011 |
| Subsea 7 ROV UK Limited | Mining & quarrying | 2025 |
| Subsea 7 Treasury (UK) Limited | Administrative & support | 1970 |
| Subsea 7 West Africa Contracting Limited | Construction | 1993 |
| Subuola Abraham Consulting Limited | Financial services | 2022 |
| Success 28 Limited | Professional & scientific | 2024 |
| Success Global Limited | Wholesale & retail | 2018 |
| Successful 25 Limited | Health & social care | 2025 |
| Successful Sutton | Other services | 2012 |
| Suegars Catering Limited | Hospitality | 2026 |
| Suemart Trucking Ltd | Transport & logistics | 2024 |
| Sufficient Solution Ltd | Manufacturing | 2019 |
| Sula Construction Services Ltd | Construction | 2022 |
| Sula Property Services Ltd | Construction | 2025 |
| Sulax Associates Ltd | Information & communication | 2011 |
| Summerley Care Homes LLP | | 2011 |
| Summit Cars Ltd | Wholesale & retail | 2023 |
| Sun Colour Developments Co Ltd | Real estate | 2026 |
| Sunflower SAP PVT Limited | Information & communication | 2017 |
| Sunrise Agro Products Ltd | Wholesale & retail | 2024 |
| Sunshare Consultancy Ltd | Real estate | 2023 |
| Sunstone Education Ltd | Education | 2014 |
| Sunstroke House Productions Limited | Arts & recreation | 2013 |
| Suparna Intelligence Systems Limited | Information & communication | 2020 |
| Suparna Professional Services Limited | Information & communication | 2020 |
| Superb Accountants Limited | Professional & scientific | 2023 |
| Supplement Angel Ltd | Wholesale & retail | 2025 |
| Supportmuslim Ltd | Information & communication | 2025 |
| Supportverse Limited | Administrative & support | 2023 |
| Supreme Beauty Limited | Other services | 2003 |
| SUR Diagnostics Limited | Health & social care | 2022 |
| Surecare Management Ltd | Other services | 2018 |
| Surge Corporate Animations Ltd | Information & communication | 2020 |
| Surgigas Ltd | Health & social care | 2020 |
| Surrey and Wolds Pest Control Limited | Other services | 2017 |
| Surrey Auto Repairs & Mot’S Ltd | Wholesale & retail | 2024 |
| Surrey Bathrooms Limited | Wholesale & retail | 2011 |
| Surrey BIN Cleaning Ltd | Administrative & support | 2025 |
| Surrey Blue Limited | Administrative & support | 2010 |
| Surrey Consultancy Limited | Professional & scientific | 2015 |
| Surrey Conversions Ltd | Construction | 2019 |
| Surrey Cycles Ltd | Wholesale & retail | 2022 |
| Surrey Exploration Consultants Limited | Administrative & support | 2015 |
| Surrey Fresh Fruits & Vegetables Ltd | Wholesale & retail | 2021 |
| Surrey Groundworks Ltd | Construction | 2021 |
| Surrey Gynaecology Services Ltd | Health & social care | 2018 |
| Surrey Home Physio Centre Ltd | Health & social care | 2019 |
| Surrey Italian Ltd | Hospitality | 2026 |
| Surrey M&E (SW) Limited | Construction | 2023 |
| Surrey Media LAB Ltd | Manufacturing | 2018 |
| Surrey Plastering and Building Services Ltd | Construction | 2018 |
| Surrey Renewable Energy Services Ltd | Construction | 2025 |
| Surrey Renewable Energy Systems Limited | Construction | 2025 |
| Surrey Sports Turf Management Limited | Other services | 2003 |
| Surrey Tech Ltd | Information & communication | 2015 |
| Surrey Transport Services Limited | Transport & logistics | 2019 |
| Surrey Trees and Gardens Limited | Administrative & support | 2012 |
| Surreylec Electrical & Heating Services Ltd | Construction | 2020 |
| Sussex Drilling Services Ltd. | Manufacturing | 2020 |
| Sustainable Healthcare Group Limited | Health & social care | 2023 |
| Suthan Trading Ltd | Wholesale & retail | 2026 |
| Sutton & Cheam Limited | Wholesale & retail | 2010 |
| Sutton 2025 Ltd | Hospitality | 2025 |
| Sutton Airport Cars Ltd | Transport & logistics | 2025 |
| Sutton and Surrey Motorcycle Training Ltd | Education | 2025 |
| Sutton Associates Limited | Wholesale & retail | 1983 |
| Sutton Auto Sales Ltd | Wholesale & retail | 2026 |