| SALISBURYSTORAGE4U.CO.UK Ltd | Real estate | 2011 |
| Sally Fairall & Associates Limited | Professional & scientific | 2009 |
| Sally Rigby Ltd | Information & communication | 2025 |
| Salmon 169 Couriers Limited | Transport & logistics | 2013 |
| Salt Advisory Ltd | Professional & scientific | 2026 |
| Salt. Deli Kitchen Limited | Wholesale & retail | 2021 |
| Saltus Consulting Ltd | Professional & scientific | 2015 |
| Saltwater Services Limited | Professional & scientific | 2026 |
| Salty Lemons Ltd | Extraterritorial | 2024 |
| Salvin Court Freehold Ltd | Households | 2021 |
| Salvin Court Management Company Limited | Households | 2006 |
| SAM Barnes Personal Training Ltd | Arts & recreation | 2022 |
| SAM Pryor Holdings Ltd | Financial services | 2024 |
| SAM Trustees Limited | Financial services | 1997 |
| Samantha Luckman Hearing Care Limited | Wholesale & retail | 2018 |
| Same Street Kitchens Limited | Hospitality | 2023 |
| Sammy's Space Ltd | Households | 2025 |
| Sampson Coward LLP | | 2009 |
| Samuel Construction (Salisbury) Limited | Construction | 2022 |
| Samuel Social Support Limited | Health & social care | 2019 |
| Samuelson Place Management Company Limited | Households | 2016 |
| Sanctuary Psychology Ltd | Health & social care | 2025 |
| Sandall Moor Village (Armthorpe) Management Company Limited | Households | 2005 |
| Sandall Moor Village Management Company Limited | Households | 2005 |
| Sandford Arts Limited | Information & communication | 2006 |
| Sandford Hart Properties Limited | Construction | 2018 |
| Sandhills Holiday Park Limited | Administrative & support | 2003 |
| Sandpiper Walk (West Wittering) Management Company Limited | Households | 2015 |
| Sandra Silk Bookkeeping & Business Services Ltd | Professional & scientific | 2007 |
| Sandroyd School Trust Limited | Education | 1955 |
| Sane Property Ltd | Real estate | 2020 |
| Santa Clara (UK) Limited | Real estate | 2004 |
| Santos & Stone Limited | Wholesale & retail | 2025 |
| Sapana Ltd | Information & communication | 2023 |
| Sapphire Consulting Services Limited | Information & communication | 2025 |
| Sapphire Fields & Beaumont Park Management Company Limited | Households | 2021 |
| Sara Allom Limited | Wholesale & retail | 2009 |
| Sara Quayle Ltd | Professional & scientific | 2016 |
| Sara Roberts Creative Limited | Professional & scientific | 2022 |
| Sarah Radclyffe Productions Limited | Information & communication | 1992 |
| Saraswati Homes Limited | Real estate | 2025 |
| Sariska Holdings Limited | Extraterritorial | 2010 |
| Sarpedon Services Limited | Health & social care | 2018 |
| Sarum Architecture Ltd | Professional & scientific | 2018 |
| Sarum College | Education | 2015 |
| Sarum Consulting Limited | Professional & scientific | 2026 |
| Sarum Counselling Service | Health & social care | 2000 |
| Sarum Crossfit Limited | Arts & recreation | 2012 |
| Sarum Energy Ltd | Financial services | 2020 |
| Sarum EYE Clinic Limited | Health & social care | 2016 |
| Sarum Graphics Limited | Manufacturing | 2000 |
| Sarum Health Ltd | Health & social care | 2025 |
| Sarum Heritage and Planning Ltd | Professional & scientific | 2022 |
| Sarum Heritage Limited | Real estate | 1989 |
| Sarum Holdings Limited | Professional & scientific | 2019 |
| Sarum Hydraulics Limited | Manufacturing | 1995 |
| Sarum Learning Ltd | Education | 2023 |
| Sarum Occupational Health Limited | Health & social care | 2011 |
| Sarum Precision Hydraulics Limited | Manufacturing | 2003 |
| Sarum Properties Limited | Real estate | 1987 |
| Sarum Refrigeration Services Limited | Manufacturing | 1959 |
| Sarum Scaffolding Limited | Construction | 2015 |
| Sarum Scientific Limited | Manufacturing | 2004 |
| Sarum Services Limited | Professional & scientific | 1997 |
| Sarum Solutions Limited | Professional & scientific | 2020 |
| Sarum ST. Michael Management Company Limited | Households | 1980 |
| Sarum Sweeps Limited | Administrative & support | 2014 |
| Sarum Taxi Service Ltd | Transport & logistics | 2023 |
| Sarum Tech Limited | Information & communication | 2015 |
| Sarum Trustees Limited | Financial services | 1971 |
| Sarum Vintners Limited | Wholesale & retail | 2006 |
| Sarums Limited | Wholesale & retail | 2017 |
| Sarumxr Ltd | Information & communication | 2021 |
| Sass & Edge Limited | Wholesale & retail | 2017 |
| Sass and Wild Ltd | Wholesale & retail | 2021 |
| SAT Property Investment Ltd | Real estate | 2024 |
| Satellite Creative Limited | Professional & scientific | 1997 |
| Sation Limited | Wholesale & retail | 2002 |
| Saul and Sons Building Contractors Limited | Administrative & support | 2014 |
| Saul and Sons Roofing Contractor Limited | Construction | 2025 |
| Saul Brothers Limited | Financial services | 2025 |
| Saunashop.Com Ltd. | Wholesale & retail | 1991 |
| Saunders Electrical Contractors (SEC) Ltd. | Construction | 2019 |
| Savenaca Naresia Ltd | Transport & logistics | 2025 |
| Savings Direct 2U Limited | Wholesale & retail | 2024 |
| Saxon Green (Peterchurch) Management Company Limited | Households | 2026 |
| Saxons Court (Wokingham) Management Company Limited | Real estate | 2017 |
| SB Joinery Holdings Limited | Financial services | 2016 |
| SB Renovations Ltd | Construction | 2021 |
| SB5 Cleaning and Maintenance Ltd | Administrative & support | 2026 |
| SC Design Consultancy Limited | Professional & scientific | 2014 |
| SC Geotech Ltd | Professional & scientific | 2018 |
| Scada Developments Limited | Information & communication | 2010 |
| Scarfco Limited | Professional & scientific | 2022 |
| SCC Sales Ltd | Wholesale & retail | 2023 |
| Sceptre Medical UK Limited | Manufacturing | 2026 |
| Scholars Walk (Melksham) Management Company Limited | Households | 2015 |
| School House Gardens (Two) Management Company Limited | Households | 1995 |
| Schoolmead Management Limited | Households | 2010 |
| Schoolworkspace Ltd | Education | 2017 |