| Sannin Holdings Limited | Hospitality | 2023 |
| Sano Creative Ltd | Other services | 2019 |
| Sano Hair Ltd | Other services | 2010 |
| Sanp Global Consultants Limited | Information & communication | 2014 |
| Sanpps Ltd | Real estate | 2024 |
| Sanraj Limited | Health & social care | 2016 |
| Sanrev Limited | Information & communication | 2018 |
| Sansa Event Florist Ltd | Wholesale & retail | 2024 |
| Sansag Limited | Hospitality | 2021 |
| Sansoft Solutions Limited | Information & communication | 2007 |
| Sant Jewels Ltd | Wholesale & retail | 2024 |
| Santa Maria Yacht Ltd | Transport & logistics | 2024 |
| Santa Sorted Ltd | Wholesale & retail | 2022 |
| Santiago Image Services Limited | Other services | 2006 |
| Santok (UK) Ltd | Other services | 2018 |
| Santok Asset Management Limited | Professional & scientific | 2004 |
| Santok Homes (1) Ltd | Real estate | 2015 |
| Santok Homes (3) Ltd | Real estate | 2015 |
| Santok Homes (Monmouth) Ltd | Real estate | 2015 |
| Santok Investments Limited | Real estate | 2003 |
| Santok Property Limited | Construction | 2002 |
| Santram Events Limited | Hospitality | 2025 |
| Santray Limited | Administrative & support | 2007 |
| Santriya Consultancy Ltd | Information & communication | 2014 |
| Santriya Technologies Limited | Wholesale & retail | 2013 |
| Sanuk Limited | Extraterritorial | 2009 |
| Sanvee Ltd | Wholesale & retail | 2024 |
| Sanvi Investments Limited | Real estate | 2023 |
| Saoudyy Lashes Ltd | Wholesale & retail | 2025 |
| SAP London Limited | Real estate | 2020 |
| Sapa Commercials Limited | Wholesale & retail | 2012 |
| Saphala Global Sports & Entertainment Ltd | Professional & scientific | 2018 |
| Saphala TI Holdings Ltd | Arts & recreation | 2017 |
| Sapio Accountants Ltd | Professional & scientific | 2026 |
| Sapnay Entertainments Limited | Arts & recreation | 2018 |
| Sapnay Productions | Arts & recreation | 2008 |
| Sapphire Blaze Limited | Information & communication | 2021 |
| Sapphire Harrow Freehold Limited | Households | 2021 |
| Sapphire Mark Ltd | Wholesale & retail | 2023 |
| Sapphire UK Property Limited | Real estate | 2018 |
| Saprev Limited | Information & communication | 2007 |
| SAR Govindji Limited | Real estate | 2023 |
| SAR Holdings Limited | Administrative & support | 2018 |
| SAR Law Ltd | Professional & scientific | 2024 |
| SAR Property Partners Ltd | Real estate | 2024 |
| SAR System Ltd | Information & communication | 2020 |
| SAR5 Ltd | Real estate | 2020 |
| Sara (London) Limited | Wholesale & retail | 1984 |
| Saracen House Limited | Real estate | 2018 |
| Saracen House Properties Limited | Real estate | 2012 |
| Sarah Paul Psychotherapy Limited | Health & social care | 2025 |
| Saraina Ltd | Professional & scientific | 2024 |
| Sarakipa Ltd | Real estate | 2023 |
| Saran Associates Limited | Professional & scientific | 2005 |
| Saras Care Service Ltd | Health & social care | 2022 |
| Saras Homes Ltd | Real estate | 2025 |
| Saras Prop Ltd | Real estate | 2022 |
| Sarbat DA Bhala Limited | Wholesale & retail | 2025 |
| Sarcon (NO. 387) Limited | Real estate | 2016 |
| Sardaarji's Limited | Wholesale & retail | 2026 |
| Sardesai Holdings Ltd | Real estate | 2023 |
| Saree Pleater Limited | Wholesale & retail | 2026 |
| Saregama Limited | Information & communication | 1999 |
| Sarf Investments Ltd | Financial services | 2024 |
| Sarf Ltd | Other services | 2022 |
| Sargam Arts & Entertainment Ltd | Arts & recreation | 2019 |
| Sargod Property Investment Ltd | Hospitality | 2024 |
| Sargon Construct Ltd | Construction | 2020 |
| Sarima Immigration Services Limited | Professional & scientific | 2025 |
| Sarima Technology Limited | Information & communication | 2022 |
| Sarini Ltd | Health & social care | 2024 |
| Sarinitiy Properties Limited | Real estate | 2023 |
| Sarip Limited | Real estate | 2021 |
| Sarita Sabharwal Limited | Information & communication | 2020 |
| Sariwoman Films and Animation Limited | Information & communication | 2022 |
| Sariwoman Limited | Information & communication | 2022 |
| Sariz Limited | Hospitality | 2002 |
| Sarjen Systems Limited | Information & communication | 2016 |
| Sarjoo Mistry Limited | Financial services | 2017 |
| Sarjoo Mistry Realty Limited | Real estate | 2019 |
| Sarkar Property Limited | Real estate | 2013 |
| Sarki Cold Store UK Limited | Professional & scientific | 2025 |
| Sarmad Property Services Limited | Real estate | 2017 |
| Sarmexa Limited | Wholesale & retail | 2025 |
| Sarnil Ltd | Real estate | 2021 |
| Saroj Skylines Ltd | Real estate | 2025 |
| Sarosh Medical Solutions Ltd | Wholesale & retail | 2025 |
| Sarova Developments Ltd | Real estate | 2018 |
| Sarovi Davda Ltd | Health & social care | 2013 |
| Sarr Properties Ltd | Administrative & support | 2017 |
| Sarratt Limited | Hospitality | 1997 |
| Sarsa MR Limited | Real estate | 1997 |
| Sarten Packaging UK Ltd | Manufacturing | 2025 |
| Sarto Limited | Professional & scientific | 2006 |
| Sarum Dent Ltd | Health & social care | 2025 |
| Sarunas Klimavicius Joinery Ltd | Construction | 2019 |
| Sarva Global Ventures Ltd | Financial services | 2024 |
| Sarvasva Properties Limited | Real estate | 2026 |
| Sarvatit Infotech Ltd | Information & communication | 2026 |
| Sarveshwar Enterprise Ltd | Manufacturing | 2025 |