| Samed Group Limited | Real estate | 2024 |
| Samfad Limited | Health & social care | 2022 |
| Samgool Construction Ltd | Construction | 2019 |
| Samir Barber Ltd | Other services | 2025 |
| Samirkumar Patel Ltd | Wholesale & retail | 2025 |
| Samlaw Properties Ltd | Real estate | 2022 |
| Sammy a. Courier Express Ltd | Transport & logistics | 2020 |
| Samosas HUT Limited | Hospitality | 2024 |
| Samoskine Ltd | Wholesale & retail | 2017 |
| Samplemine Limited | Information & communication | 2025 |
| Samsol First Ventures UK Ltd | Wholesale & retail | 2010 |
| Samsunsid Limited | Health & social care | 2016 |
| Samvedh Ltd | Information & communication | 2013 |
| Samwise Consultancy Ltd | Information & communication | 2023 |
| Samyem Property Group Ltd | Real estate | 2021 |
| SAN Antonio Kitchens Ltd | Construction | 2016 |
| SAN FAT Limited | Hospitality | 2012 |
| SAN Phillips Finance Limited | Professional & scientific | 2003 |
| SAN Phillips Investment Limited | Real estate | 2019 |
| SAN Phillips Limited | Professional & scientific | 2020 |
| SAN Phillips OIL & GAS Limited | Mining & quarrying | 2019 |
| SAN Property Solution Ltd | Real estate | 2024 |
| Sana Cosmetics Ltd | Wholesale & retail | 2012 |
| Sana Group Ltd | Wholesale & retail | 2025 |
| Sana Provide Limited | Wholesale & retail | 2025 |
| Sancofa Investments Limited | Administrative & support | 2022 |
| Sancroft Consulting Ltd | Professional & scientific | 2016 |
| Sanctus Court Company Limited | Households | 2000 |
| Sandbach Management Company Limited | Households | 2011 |
| Sandbach Management Company Number 2 Limited | Households | 2016 |
| Sandeep Bhim Communications Limited | Administrative & support | 2011 |
| Sanderson Apartments Management Limited | Households | 2013 |
| Sanderson Gardens Management Company Limited | Households | 2011 |
| Sanderstead Road Management Company Limited | Households | 2012 |
| Sandford Court (Aldershot) Management Company Limited | Households | 1983 |
| Sandher + Sons Ltd | Arts & recreation | 2019 |
| Sandher Stores Ltd | Wholesale & retail | 2024 |
| Sandhu Gyms Ltd | Arts & recreation | 2024 |
| Sandhu Holdings Limited | Real estate | 2018 |
| Sandhu Protection Services Ltd | Administrative & support | 2019 |
| Sandilands Sports Club Ltd | Arts & recreation | 2021 |
| Sandip S Restaurants & Catering Limited | Hospitality | 2022 |
| Sandpiper Grange Management Company Ltd | Households | 2021 |
| Sandra Studio Ltd | Health & social care | 2021 |
| Sandringham Court (49 Cecilia Road) Management Company Limited | Households | 2005 |
| Sandringham Court RTM Company Limited | Households | 2010 |
| Sandrock Place Maintenance Company Limited | Households | 1962 |
| Sands City Ltd | Hospitality | 2021 |
| Sandstown Trade Ltd | Professional & scientific | 2000 |
| Sane Care & Propertees Ltd | Real estate | 2025 |
| Sang Ltd | Wholesale & retail | 2026 |
| Sanga Hub Investments Limited | Wholesale & retail | 2017 |
| Sangeetha Jeevakumar Ltd | Administrative & support | 2025 |
| Sangeetha of the UK | Education | 2010 |
| Sanghamitra SP Limited | Professional & scientific | 2022 |
| Sanghera Bros Limited | Wholesale & retail | 2004 |
| Sanisha Properties Ltd | Real estate | 2025 |
| Sanjeb Ltd | Professional & scientific | 2015 |
| Sansid Beauty Ltd. | Other services | 2012 |
| Santana London VEG Ltd | Wholesale & retail | 2018 |
| Santi Construction Ltd | Construction | 2019 |
| Santiago's Services Ltd | Administrative & support | 2025 |
| Santini Medical Limited | Administrative & support | 2013 |
| Santo Mare Trading Limited | Hospitality | 2018 |
| Sanwal Limited | Manufacturing | 2019 |
| Sany Medical Ltd | Administrative & support | 2023 |
| Sanyu & Family Ltd | Health & social care | 2025 |
| Saoirse Holdings Ltd | Real estate | 2025 |
| Saoirse Wellness Ltd | Professional & scientific | 2023 |
| Sapper Ltd | Construction | 2015 |
| Sapphire Advisery Limited | Financial services | 2014 |
| Sapphire Court Freehold Limited | Real estate | 2011 |
| Sapphire Fragrances Limited | Wholesale & retail | 2024 |
| Sapphire Logistics London Limited | Administrative & support | 2021 |
| Sapsford House (Kings Hill) Management Company Limited | Households | 2008 |
| Saqib Services Limited | Administrative & support | 2016 |
| SAR Builder Ltd | Construction | 2020 |
| Sara Consulting Services Limited | Information & communication | 2018 |
| Sara Design Studio Ltd | Professional & scientific | 2024 |
| Sarah B Consulting Ltd | Health & social care | 2011 |
| Sarah Grace Court Management Company Limited | Households | 2015 |
| Sarah Green Hotel Consulting Ltd | Professional & scientific | 2020 |
| Sarah Jane Hardy Limited | Administrative & support | 2024 |
| Sarah Smith International Ltd | Administrative & support | 2024 |
| Sarahvic Ltd | Health & social care | 2019 |
| Saraj Investments Limited | Real estate | 2021 |
| Saraj Property Limited | Real estate | 2024 |
| Saranya ADS Ltd | Professional & scientific | 2026 |
| Sarao Club Limited | Hospitality | 2023 |
| Sardar Bari Ltd | Wholesale & retail | 2026 |
| Sare Kebab Ltd | Hospitality | 2024 |
| Sarfowah London Ltd | Wholesale & retail | 2021 |
| Sark (UK) Limited | Other services | 2002 |
| Sarrion Ltd | Hospitality | 2020 |
| Sarthak Foods Ltd | Hospitality | 2025 |
| Sarum Electronics Limited | Manufacturing | 1985 |
| Sarvopari Limited | Wholesale & retail | 2026 |
| SAS Finance Limited | Professional & scientific | 2015 |
| SAS Pro Ltd | Real estate | 2025 |
| SAS Products Ltd | Wholesale & retail | 2024 |