| Samuel Property Holdings Ltd | Real estate | 2025 |
| Samuel Thomas Design Ltd | Professional & scientific | 2012 |
| Samy Courier Limited | Transport & logistics | 2025 |
| SAMYP2 Limited | Information & communication | 2021 |
| Sam’S UK Supplies Ltd | Wholesale & retail | 2026 |
| SAN Healthcare Ltd | Health & social care | 2020 |
| SAN HO Ltd | Wholesale & retail | 2024 |
| SAN Marino Restaurant Limited | Hospitality | 2024 |
| SAN Market L6 Ltd | Wholesale & retail | 2026 |
| SAN Rafael Services Ltd | Transport & logistics | 2016 |
| SAN Siang Bless Limited | Hospitality | 2022 |
| Sana Associates Ltd | Professional & scientific | 2024 |
| Sana Styles Ltd | Other services | 2025 |
| Sanaa Optical Ltd | Health & social care | 2025 |
| Sanad Relocation Consultancy Ltd | Real estate | 2019 |
| Sanadil Properties Limited | Real estate | 2024 |
| Sanan Consulting Ltd | Professional & scientific | 2017 |
| Sanarm Limited | Construction | 2026 |
| Sanartu Group Limited | Administrative & support | 2023 |
| Sanchin Karate Ltd | Arts & recreation | 2021 |
| Sanctioned Blessings Ltd | Manufacturing | 2025 |
| Sand Dune Close Management Limited | Households | 2021 |
| Sandawn Timber Ltd | Professional & scientific | 2019 |
| Sandbar Hospitality Ltd | Hospitality | 2024 |
| Sandbrook Capital BES Ltd | Financial services | 2021 |
| Sandbrook Estates Limited | Real estate | 2015 |
| Sandee Solutions Limited | Construction | 2014 |
| Sandersmac LLP | | 2026 |
| Sanderson Investment Holdings Ltd | Financial services | 2026 |
| Sandfield Capital Limited | Financial services | 2018 |
| Sandfield Consulting Limited | Other services | 2018 |
| Sandfield Developments Limited | Professional & scientific | 2003 |
| Sandfield Estates Ltd | Households | 2019 |
| Sandfield Investment Properties Ltd | Real estate | 2011 |
| Sandfield Leisure Limited | Real estate | 2022 |
| Sandfield Marketing Limited | Professional & scientific | 2016 |
| Sandfield Park Private Day Nursery Limited | Other services | 2000 |
| Sandfield Projects Limited | Construction | 2025 |
| Sandfield Property Management Ltd | Real estate | 2017 |
| Sandford Preschool CIC | Education | 2017 |
| Sandforth Court Limited | Households | 1973 |
| Sandgrounder Developments Limited | Real estate | 1988 |
| Sandgrown Cleaning Services Ltd | Administrative & support | 2009 |
| Sandgrown Contracting Ltd | Administrative & support | 2011 |
| Sandgrown Northwest Ltd | Administrative & support | 2022 |
| Sandheys Flat Management Company Ltd | Households | 2016 |
| Sandhills Strategic Investments Limited | Real estate | 2024 |
| Sandhu Construction Group Ltd | Construction | 2026 |
| Sandhurst Developments (NW) Limited | Real estate | 2019 |
| Sandilands Ltd | Other services | 1995 |
| Sandinha Retina Services Ltd | Health & social care | 2026 |
| Sandlot Property Ltd | Real estate | 2024 |
| Sando KAI Ltd | Hospitality | 2025 |
| Sandon Chester Limited | Health & social care | 2022 |
| Sandor Eggs Farm Ltd | Agriculture & fishing | 2016 |
| Sandown & Butler Ltd | Real estate | 2025 |
| Sandown Court (Wavertree) RTM Company Ltd | Real estate | 2024 |
| Sandown Metal Craft Ltd | Professional & scientific | 2017 |
| Sandown Property Company (Liverpool) Limited | Real estate | 1951 |
| Sandown Property Holdings Limited | Financial services | 2016 |
| Sandown Purple Flowers Ltd | Real estate | 2026 |
| Sandringham Court Freehold Limited | Households | 2022 |
| Sandringham Enterprise Limited | Hospitality | 2026 |
| Sandringham Manor RTM Company Limited | Households | 2025 |
| Sandringham Properties NW Limited | Real estate | 2026 |
| Sandstone Build Limited | Construction | 2024 |
| Sandstone Properties Limited | Real estate | 2016 |
| Sandstorm Engineering Ltd | Professional & scientific | 2025 |
| Sandthorne Limited | Manufacturing | 2017 |
| Sandton Angel Healthcare Ltd | Health & social care | 2025 |
| Sandwich Express (Liverpool) Limited | Hospitality | 2012 |
| Sandy & David Robinson Trading Limited | Professional & scientific | 2017 |
| Sandy Beaches Property Services Ltd | Real estate | 2019 |
| Sandy Keady Properties Limited | Real estate | 2025 |
| Sandy Shipping Limited | Transport & logistics | 2025 |
| Sandyhoof Limited | Information & communication | 2025 |
| Sandysandles Ltd | Wholesale & retail | 2025 |
| Sanf Insulation Limited | Professional & scientific | 2023 |
| Sanford Holdings | Professional & scientific | 2020 |
| Sang Sang Takeaway Ltd | Hospitality | 2026 |
| Sanguine Hospitality Limited | Professional & scientific | 2001 |
| Sanguine Hospitality Management UK Ltd | Hospitality | 2019 |
| Sanhil Capital Limited | Administrative & support | 2023 |
| Sanitas Cura Ltd | Health & social care | 2023 |
| Sankey Automation Limited | Professional & scientific | 2015 |
| Sankofa Aviation Group Ltd | Professional & scientific | 2026 |
| Sankyu Limited | Wholesale & retail | 2025 |
| Sanly Music Limited | Education | 2026 |
| Sanni DEF Holdings Ltd | Real estate | 2025 |
| Sanoura Limited | Households | 2022 |
| Sanskruti Ltd | Hospitality | 2015 |
| Sant Agata 21 Limited | Construction | 2018 |
| Santa Maria Drinks Ltd | Wholesale & retail | 2022 |
| Santa Marina Food Limited | Hospitality | 2023 |
| Santaco Ltd | Arts & recreation | 2020 |
| Santana International Limited | | 1994 |
| Sante-Trans Ltd | Transport & logistics | 2019 |
| Santi Support Services Limited | Health & social care | 2026 |
| Santon Consultancy Services Limited | Administrative & support | 2010 |
| Sants Property Ltd | Real estate | 2025 |