| Stone Temple Ltd | Manufacturing | 2010 |
| Stonebarn Holdings Limited | Real estate | 2023 |
| Stonebury Land Ltd | Real estate | 2025 |
| Stonecraft of Bath Limited | Construction | 1999 |
| Stoneleigh Court Leaseholders Limited | Households | 2006 |
| Stonier Hobbs Developments Limited | Real estate | 2000 |
| Stories Design Studio Limited | Information & communication | 2019 |
| Stories of Strength Limited | Administrative & support | 2021 |
| Stork Express Limited | Administrative & support | 1996 |
| Storm Beach Learning and Development Limited | Other services | 2006 |
| Storm Consultancy (EU) Ltd | Information & communication | 2007 |
| Storm Creative Limited | Arts & recreation | 2000 |
| Storm Sports Ltd | Arts & recreation | 2023 |
| Stormhaus Ltd | Wholesale & retail | 2025 |
| Storrm Limited | Manufacturing | 2018 |
| Storybridge Limited | Education | 2026 |
| Storyhouse Publishing Ltd | Information & communication | 2018 |
| Stourton Group Ltd | Other services | 2003 |
| Stranger Music Limited | Administrative & support | 2011 |
| Stranger Records Limited | Other services | 2010 |
| Stranks Health Limited | Health & social care | 2019 |
| Strategease Ltd | Professional & scientific | 2013 |
| Strategic Outcomes Limited | Professional & scientific | 2023 |
| Strategy & Economics Ltd | Professional & scientific | 2000 |
| Strategy Industry 4.0 Ltd | Professional & scientific | 2022 |
| Strattons Walk Flats Management Company Limited | Real estate | 2006 |
| Stratus Medical Ltd | Health & social care | 2013 |
| Streetcraze Limited | Real estate | 2001 |
| Streeten Kamlish Limited | Arts & recreation | 2006 |
| Stride Capital Partners Limited | Financial services | 2025 |
| Strong Ideas Limited | Professional & scientific | 2010 |
| STRUCTURES2 Ltd | Professional & scientific | 2023 |
| Stuart Bremner Limited | Professional & scientific | 2024 |
| Stuart Sawyer Building Limited | Construction | 2013 |
| Student Housing Bath Limited | Hospitality | 2018 |
| Student Housing Bath Management Limited | Households | 2019 |
| Studentshare UK Ltd | Wholesale & retail | 2025 |
| Studies in Mars Black Ltd | Information & communication | 2026 |
| Studio Architects Limited | Professional & scientific | 1997 |
| Studio Barcelona Limited | Information & communication | 2006 |
| Studio Carme Ltd | Arts & recreation | 2013 |
| Studio Hoda Ltd | Professional & scientific | 2023 |
| Studio Into Limited | Professional & scientific | 2011 |
| Studio Knight Stokoe Ltd | Professional & scientific | 2022 |
| Studio Lung Limited | Information & communication | 2011 |
| Studio LX Limited | Arts & recreation | 2015 |
| Studio M Creative Ltd | Professional & scientific | 2022 |
| Studio Nate Ltd. | Professional & scientific | 2021 |
| Studio ORR Design Ltd | Professional & scientific | 2025 |
| Studio Soak Ltd | Health & social care | 2025 |
| Studio Sulis Limited | Professional & scientific | 2022 |
| STUDIO25 Creative Ltd | Information & communication | 2013 |
| Studioedp Ltd | Wholesale & retail | 2020 |
| Stupots Pottery Studio Limited | Manufacturing | 2022 |
| Sturgeon Solutions Ltd | Information & communication | 2026 |
| Style Shopping Ltd | Wholesale & retail | 2026 |
| Style Your Words Ltd | Professional & scientific | 2016 |
| SUB 13 Limited | Hospitality | 2010 |
| Subbetica Olive OIL Company Ltd | Wholesale & retail | 2025 |
| Submachine Limited | Information & communication | 2018 |
| Sudafest CIC | Arts & recreation | 2023 |
| SUE Abbotson Limited | Health & social care | 2011 |
| SUE Lane HR Consultancy Limited | Administrative & support | 2018 |
| SUE Mongredien Limited | Arts & recreation | 2006 |
| Suffolk-Shufflebotham and Co Ltd. | Health & social care | 2017 |
| Sugar PIE Limited | Manufacturing | 2022 |
| Sugarcane Studio Ltd | Manufacturing | 2020 |
| Suite 07 UK Ltd | Real estate | 2023 |
| SUITE01 Holding Ltd | Financial services | 2025 |
| SUITE01 Ltd | Real estate | 2025 |
| SUITE07 Norway Ltd | Real estate | 2025 |
| Suited and Booted Studios Community Interest Company | Information & communication | 2007 |
| Sulgeology Limited | Professional & scientific | 2018 |
| Sulis Aeronautics Ltd | Professional & scientific | 2020 |
| Sulis Applications Limited | Information & communication | 2011 |
| Sulis Associates Ltd | Professional & scientific | 2014 |
| Sulis Business Consulting Limited | Professional & scientific | 2008 |
| Sulis Guides Limited | Administrative & support | 2003 |
| Sulis Healthcare Limited | Wholesale & retail | 2023 |
| Sulis Hospital Bath Limited | Health & social care | 2007 |
| Sulis Imaging Ltd | Administrative & support | 2011 |
| Sulis Management Ltd | Construction | 2017 |
| Sulis Marketing Ltd | Arts & recreation | 2014 |
| Sulis Masonry Ltd | Construction | 2008 |
| Sulis Public Affairs Limited | Other services | 2016 |
| Sulis Solutions Ltd | Wholesale & retail | 2018 |
| Sulis Stays Limited | Hospitality | 2026 |
| Sulis Stoves Ltd | Construction | 2017 |
| Sulis Surveyors Ltd | Professional & scientific | 2025 |
| Sulis Waste Disposal Ltd | Water & waste | 2025 |
| Sulis Wealth Ltd | Administrative & support | 2016 |
| Sulisco Ltd | Information & communication | 2011 |
| Summer Lane Woodland East Limited | Agriculture & fishing | 2015 |
| Summer Lane Woodland West Limited | Households | 2015 |
| Summer SET Properties Ltd | Real estate | 2025 |
| Summerfield House Residents Association Limited | Households | 1986 |
| Sumner (Bath) Limited | Professional & scientific | 2018 |
| Sumukha Handicraft International Ltd | Wholesale & retail | 2024 |
| Sun & Yang Ltd | Professional & scientific | 2022 |
| Sun RAW Limited | Professional & scientific | 2018 |