| Sandiway Investments Ltd | Construction | 2023 |
| Sandiway Land NO.1 LLP | | 2025 |
| Sandiway Land NO.2 LLP | | 2025 |
| Sandor Transport Limited | Transport & logistics | 2016 |
| Sandstone Care Cheshire Limited | Health & social care | 2020 |
| Sandstone Care Developments Limited | Construction | 2026 |
| Sandstone Care Helsby Limited | Health & social care | 2022 |
| Sandstone Care Leominster Limited | Health & social care | 2026 |
| Sandstone Care Limited | Health & social care | 2018 |
| Sandstone Care Liverpool Limited | Real estate | 2013 |
| Sandstone Care Management Limited | Professional & scientific | 2025 |
| Sandstone Care North West Limited | Health & social care | 2019 |
| Sandstone Care Ribble Court Limited | Health & social care | 2022 |
| Sandstone Care Telford Limited | Health & social care | 2018 |
| Sandstone Care Yorkshire Limited | Health & social care | 2021 |
| Sandstone Holdings (OHF) Limited | Financial services | 2022 |
| Sandstone Holdings (PS) Limited | Professional & scientific | 2020 |
| Sandstone Holdings (TGT) Limited | Professional & scientific | 2018 |
| Sandstone Supplies NW Limited | Wholesale & retail | 2025 |
| Sandstone Supplies UK Limited | Wholesale & retail | 2017 |
| Sandwell Power Ltd | Energy | 2015 |
| Sandy LEE Limited | Information & communication | 2016 |
| Sandymoor Development Company Limited | Construction | 2018 |
| Sandymoor Veterinary Centre Limited | Professional & scientific | 2022 |
| Sandyrush Properties Ltd | Real estate | 2022 |
| Saneng Limited | Administrative & support | 2026 |
| Sang CUT Limited | Information & communication | 2007 |
| Sangheili Solutions Ltd | Information & communication | 2023 |
| Sanity UK Inc Ltd | Information & communication | 2021 |
| Sankey Bridge Autos Limited | Wholesale & retail | 2011 |
| Sankey Fade Station Ltd | Other services | 2023 |
| Sankey Health Limited | Wholesale & retail | 2010 |
| Sankey Holdings (Cheshire) Limited | Real estate | 2024 |
| Sankey Station Community Association CIC | Construction | 2023 |
| Sankey Street Holdings Limited | Real estate | 2024 |
| Sankey Wasps Ltd | Health & social care | 2015 |
| Sankeycad Ltd | Administrative & support | 2007 |
| Sannin Law Ltd | Professional & scientific | 2025 |
| Sanquay Publishing Limited | Information & communication | 2013 |
| Sanro Accounting Solution Ltd | Administrative & support | 2017 |
| Sanro Investment Ltd | Real estate | 2019 |
| Sanro Properties Ltd | Real estate | 2020 |
| Sanro Retail Solution Ltd | Wholesale & retail | 2022 |
| Sanro Software Solutions Limited | Information & communication | 2018 |
| Sanroig Limited | Health & social care | 2014 |
| Sanviva UK Ltd | Manufacturing | 2025 |
| Sanwood Developments Limited | Real estate | 1977 |
| SAP Controls Ltd | Information & communication | 2023 |
| Sapatechnology Ltd | Administrative & support | 2023 |
| Saphley Reflexology Ltd | Other services | 2024 |
| Sapphire Assets Holdings Ltd | Financial services | 2026 |
| Sapphire Assets Ltd | Real estate | 2021 |
| Sapphire Consulting Solutions Ltd | Professional & scientific | 2020 |
| Sapphiron Consulting Ltd | Professional & scientific | 2018 |
| Saqr Limited | Information & communication | 2017 |
| SAR Consulting Limited | Information & communication | 2018 |
| Sara Engineering Limited | Administrative & support | 2024 |
| Sara's Group Ltd | Wholesale & retail | 2018 |
| Saraglis Family Limited | Administrative & support | 2017 |
| Sarah Warren SW Limited | Health & social care | 2020 |
| Sarah's Cards Limited | Wholesale & retail | 2005 |
| Sarbloh Engineering Limited | Professional & scientific | 2006 |
| Sardar & Sons Limited | Professional & scientific | 2012 |
| Sarmag Limited | Wholesale & retail | 2007 |
| Sarnies Limited | Hospitality | 2016 |
| Saronic Technologies UK Limited | Manufacturing | 2025 |
| Sarsat-Image PLC | Professional & scientific | 2015 |
| SAS Automation Private Ltd | Professional & scientific | 2020 |
| SAS Safety Consultants Limited | Administrative & support | 2011 |
| Sash Assets Ltd | Construction | 2022 |
| Sashrite Restorations Ltd | Construction | 1999 |
| Sasi Food and Wine Ltd | Wholesale & retail | 2021 |
| Sassenach Historian Tours Ltd | Administrative & support | 2023 |
| SAT Aviation Services Limited | Transport & logistics | 2008 |
| Satalite Safety Ltd | Professional & scientific | 2022 |
| Satex Electrical Limited | Manufacturing | 2021 |
| Satvik Ltd. | Administrative & support | 2007 |
| Satyricon Factory Ltd | Administrative & support | 2016 |
| Saunders Pharma Consulting Ltd | Professional & scientific | 2025 |
| Sava Consultancy Services Limited | Professional & scientific | 2024 |
| Savage Advisory Ltd | Professional & scientific | 2026 |
| Savage Peach Ltd | Wholesale & retail | 2023 |
| Savannah Tanning Limited | Other services | 2021 |
| Savanne Limited | Professional & scientific | 2015 |
| Savant Auction Services Limited | Administrative & support | 2017 |
| Savaro Garage Management System Limited | Information & communication | 2026 |
| Save Your Money Limited | Wholesale & retail | 2017 |
| Savoire Faire Trading Limited | Wholesale & retail | 2018 |
| Savoy Plumbing Heating and GAS Ltd | Construction | 2010 |
| Savvas IT Solutions Limited | Administrative & support | 2015 |
| Savvy Sourcing (Investments) Ltd | Real estate | 2024 |
| SAW Engineering Services Limited | Professional & scientific | 2018 |
| SAW Gates Ltd | Manufacturing | 2019 |
| Saxon Company Holdings Ltd | Financial services | 2024 |
| Saxon Electrical and Mechanical Ltd | Manufacturing | 2025 |
| Saxon Facilities Ltd | Construction | 2018 |
| Saxon Fire & Security Ltd | Construction | 2025 |
| Saxon Group Properties Ltd | Real estate | 2025 |
| Saxton Rail Ltd | Professional & scientific | 2025 |
| Sayer Consulting Ltd | Administrative & support | 2024 |