| Sandall Park Property Investments Limited | Construction | 2026 |
| Sandall Storage Limited | Other services | 2024 |
| Sandall Travel Limited | Transport & logistics | 2002 |
| Sandbeck House Financial Services Ltd | Professional & scientific | 2010 |
| Sandbeck Supplies Limited | Wholesale & retail | 2014 |
| Sandford Construction Limited | Construction | 2010 |
| Sandhurst Healthcare Limited | Wholesale & retail | 2020 |
| Sandrine Developments Limited | Real estate | 2018 |
| Sandrine Estates Limited | Real estate | 2011 |
| Sandringham Food Store Limited | Wholesale & retail | 2024 |
| Sandringham Super Fryer Ltd | Hospitality | 2024 |
| Sandtoft Transport Centre Limited | Arts & recreation | 1983 |
| Sandtoft Truck & Trailer Spares Ltd | Wholesale & retail | 2022 |
| Sandy Gate Properties Limited | Real estate | 2024 |
| Sandybay Properties Ltd | Real estate | 2025 |
| Sandyfields Developments Ltd | Real estate | 2021 |
| Sandys Perfect Brows & Lashes Ltd | Other services | 2020 |
| Sandys Wheatley Limited | Other services | 2022 |
| Sandys Xscape Ltd | Other services | 2025 |
| Sangu Supported Housing Ltd | Administrative & support | 2019 |
| Sanito Hub Ltd | Wholesale & retail | 2025 |
| Sank Investments Ltd | Real estate | 2021 |
| Sank Limited | Construction | 2020 |
| Sanntangle Ltd. | Manufacturing | 2014 |
| Sanoif.Fold Limited | Agriculture & fishing | 2014 |
| Santarossa & Ernica Products Ltd | Wholesale & retail | 2023 |
| Sapphire Drift Group Ltd | Extraterritorial | 2026 |
| Sapphire Solutions & Products Limited | Professional & scientific | 2023 |
| Sapphireriver Health Ltd | Extraterritorial | 2026 |
| Sapphiresky Studios Ltd | Extraterritorial | 2026 |
| SAR Trade Ltd | Wholesale & retail | 2019 |
| Sara Werkt LLP | | 2014 |
| Sarach Steel Technologies Ltd | Professional & scientific | 2018 |
| Sarah Beaumont Inspires - Wellness C.I.C. | Health & social care | 2022 |
| Sarah Beaumont Inspires Ltd | Health & social care | 2025 |
| Sarah Grahamtc Ltd | Administrative & support | 2018 |
| Sarah Louise Travel Ltd | Administrative & support | 2025 |
| Sarah Spedition Limited | Transport & logistics | 2026 |
| Sarahnazir Ltd | Health & social care | 2022 |
| Sarahwood Properties Ltd | Real estate | 2015 |
| Saralau Limited | Transport & logistics | 2025 |
| Saralis Limited | Agriculture & fishing | 2018 |
| Saray Restaurant(Doncaster) Limited | Hospitality | 2017 |
| Saria Holding Limited | Financial services | 2019 |
| Saria Limited | Professional & scientific | 1955 |
| Saricz Developments Limited | Real estate | 2013 |
| Saricz Properties Ltd | Real estate | 2022 |
| Sarkar Supplies Ltd | Wholesale & retail | 2024 |
| Sarmera Limited | Wholesale & retail | 2025 |
| Saru Distributions Limited | Real estate | 2009 |
| Sarval (Hartshill) Limited | Manufacturing | 1960 |
| Sarval Limited | Manufacturing | 1954 |
| Sarwar Investment Group Ltd | Financial services | 2015 |
| SAS Trading International Limited | Wholesale & retail | 2024 |
| Sash (UK) Holdings Limited | Manufacturing | 2014 |
| Sash Property Lettings Ltd | Real estate | 2026 |
| Sasha Engineering Ltd | Professional & scientific | 2024 |
| Sassy Lash Ltd | Wholesale & retail | 2019 |
| Satalytics Limited | Administrative & support | 2018 |
| Satin Sheets Tissue Ltd | Manufacturing | 2024 |
| Saudi Business Gateway Limited | Transport & logistics | 2022 |
| Saulty Dog Limited | Arts & recreation | 2015 |
| Saulty Doug Investments Limited | Wholesale & retail | 2020 |
| Saulty Songs Ltd | Information & communication | 2016 |
| Saunders and Saunders TM Ltd | Public administration | 2023 |
| SAV Playden Limited | Arts & recreation | 2025 |
| Savci 24 Limited | Hospitality | 2024 |
| Save World and the Children Ltd | Health & social care | 2025 |
| Savely Data Limited | Information & communication | 2021 |
| Savely Financial Services Ltd | Financial services | 2023 |
| Savely Services Limited | Information & communication | 2021 |
| Savin Trans Ltd | Transport & logistics | 2014 |
| Savvy YES Limited | Wholesale & retail | 2024 |
| Sawdon Lettings Ltd | Real estate | 2025 |
| Saxon Travel Limited | Transport & logistics | 2004 |
| Saxton Design Limited | Professional & scientific | 2003 |
| SAY Driving Ltd | Transport & logistics | 2023 |
| Sayed Wahba Limited | Wholesale & retail | 2026 |
| Sayles & Sons Properties Ltd | Real estate | 2025 |
| Saywell Aesthetics Limited | Health & social care | 2017 |
| SB Capital Projects Ltd | Construction | 2026 |
| SB Network Consultants Ltd | Information & communication | 2011 |
| SB Transit Ltd | Transport & logistics | 2021 |
| SBA Estates Ltd | Real estate | 2015 |
| SBA Transport Limited | Transport & logistics | 2017 |
| SBE Services Ltd | Wholesale & retail | 2019 |
| SBL Pizza Limited | Hospitality | 2022 |
| SBP Transport Ltd | Transport & logistics | 2025 |
| SBR Rail Ltd | Construction | 2017 |
| SBS Construction Limited | Construction | 1997 |
| SBS Fondation Ltd | Information & communication | 2026 |
| Sbtm Planning and Design Ltd | Professional & scientific | 2024 |
| SC Climate Solutions Ltd | Energy | 2025 |
| SC Tool Hire Ltd | Administrative & support | 2026 |
| SC Tuning Ltd | Other services | 2019 |
| SCA (Climate Alliance) Ltd | Information & communication | 2020 |
| Scafell Property Co Ltd | Real estate | 2019 |
| Scaffold Coaching Ltd | Administrative & support | 2022 |
| Scafftech Limited | Construction | 2002 |
| Scandic AB Limited | Wholesale & retail | 2020 |