| Saqi Services Ltd | Transport & logistics | 2023 |
| SAR Global Solutions LP | | 2016 |
| SAR Rental Limited | Households | 2018 |
| Sara LP | | 2014 |
| Sara's Desserts Ltd | Wholesale & retail | 2024 |
| Sara's Pennywell Ltd | Wholesale & retail | 2024 |
| Sarab Edinburgh Ltd | Hospitality | 2025 |
| Sarabah United Ltd | Hospitality | 2025 |
| Saracens Capital Investments Limited | Real estate | 2003 |
| Sarah Baird Mortgage & Protection Advice Ltd | Financial services | 2018 |
| Sarah Buchanan-Smith Consulting Ltd | Administrative & support | 2011 |
| Sarah Dickson Nutritional Therapist Ltd | Extraterritorial | 2024 |
| Sarah EVE Aesthetics Ltd | Health & social care | 2021 |
| Sarah Hand Limited | Financial services | 2025 |
| Sarah Hughes Wealth Management Ltd. | Financial services | 2001 |
| Sarah L Galley Recruitment Ltd | Administrative & support | 2021 |
| Sarah Lauder Production Ltd | Professional & scientific | 2022 |
| Sarah Morgan Consulting & Recruitment Ltd | Professional & scientific | 2026 |
| Sarah Murray Beauty Ltd | Other services | 2013 |
| Sarah Phillips Associates Limited | Financial services | 2010 |
| Sarahpatersonslt Ltd | Health & social care | 2021 |
| Saralcode Ltd | Professional & scientific | 2025 |
| Saralex Consulting Services Limited | Professional & scientific | 2017 |
| Saramar Investments Limited | Other services | 2025 |
| Sarandi LP | | 2012 |
| Saras Capital II Founder GP LLP | | 2024 |
| Saras Capital II Founder LP | | 2024 |
| Sarata Holdings Ltd | Financial services | 2024 |
| Saratoga SLP | | 2001 |
| Saravat Limited | Wholesale & retail | 2016 |
| Sarcralex Ltd | Professional & scientific | 2014 |
| Sardi Export LP | | 2020 |
| Sarf Technology Solutions Limited | Other services | 2024 |
| Sarher Limited | Hospitality | 2026 |
| Sark Property Management Limited | Hospitality | 2024 |
| Sarlink Ltd | Wholesale & retail | 2025 |
| Sarok Barber Ltd | Other services | 2024 |
| Sartus Commerce LP | | 2014 |
| Sarvang Couture Ltd | Wholesale & retail | 2025 |
| SAS Hotels Limited | Hospitality | 2021 |
| Sash & Case Windows Direct Limited | Manufacturing | 2015 |
| Sash and Case Painting Co Ltd | Construction | 2018 |
| Sash and Case Solutions Ltd | Construction | 2024 |
| Sassenach Tours Ltd | Administrative & support | 2017 |
| Sassy Lassie Limited | Wholesale & retail | 2023 |
| Sast Operations Limited | Professional & scientific | 2025 |
| SAT Digital Marketing Limited | Information & communication | 2025 |
| SAT Enerji Trade LP | | 2014 |
| SAT-7 International | Information & communication | 2005 |
| Satco International Holdings LP | | 2019 |
| Satcom Pacific LP | | 2016 |
| Satello Ltd | Wholesale & retail | 2026 |
| Satery Resources LP | | 2016 |
| Satine Edinburgh Limited | Hospitality | 2022 |
| Satintour Services | | 2004 |
| Sator Italia Limited | Administrative & support | 2025 |
| Satory Resource LP | | 2018 |
| Satoyama Ltd | Professional & scientific | 2025 |
| Sattav Ltd | Hospitality | 2026 |
| Sattva Foods Ltd | Hospitality | 2026 |
| Satu Mare SP | | 2004 |
| Satura Trading Co | | 1992 |
| Saturn Global Logistics LP | | 2014 |
| Saturn Pharma Ltd | Health & social care | 2017 |
| Satus Capital Ltd | Financial services | 2020 |
| Satvex LP | | 2016 |
| Satvik Development LP | | 2011 |
| Satvik Development Plus LP | | 2015 |
| Satyam Shivam Sundaram LP | | 2021 |
| Satyavik Property Ltd | Real estate | 2021 |
| Saubhari's Ltd | Hospitality | 2022 |
| Sauce Champions Ltd | Manufacturing | 2025 |
| Sauchiehall Street Regeneration Limited | Construction | 2018 |
| Sauchope Links Park Limited | Hospitality | 2003 |
| Saud Innovations Ltd | Wholesale & retail | 2025 |
| Saudi Refrigerations Unit Co Ltd | Other services | 2024 |
| Saudi Tours Ltd | Administrative & support | 2026 |
| Sauerborn & Sauerborn LP | | 2019 |
| Saughall International | | 1994 |
| SAUGHTON18 Limited | Wholesale & retail | 2025 |
| Saul Galloway Joiners + Builders Limited | Construction | 2000 |
| Saulquin Grier Limited | Financial services | 2017 |
| Sausalito Partners | | 1998 |
| Sauvage Design Studio Ltd | Professional & scientific | 2023 |
| Sava International Ltd | Manufacturing | 2024 |
| Savage Management Limited | Professional & scientific | 2015 |
| Savalas Ltd. | Arts & recreation | 1999 |
| Savaliya Invest LP | | 2016 |
| Savanna Partners SLP | | 2002 |
| Savanna Skies Limited | Manufacturing | 2025 |
| Savannah and Gabriel Save the Children & Protection Children's Rights in Scotland Found. Ltd. | Wholesale & retail | 2017 |
| Savantech Limited | Information & communication | 2005 |
| Savari LP | | 2011 |
| Savary Investment Trading (Scotland) Partnership SP | | 2022 |
| Save & Protect UK Ltd | Information & communication | 2023 |
| Save to Protect UK Ltd | Professional & scientific | 2024 |
| Savelia LP | | 2016 |
| Savendale Ltd | Financial services | 2018 |
| Saver Slider Limited | Wholesale & retail | 2018 |
| Saverflex Ltd | Information & communication | 2024 |