| Static London Ltd | Wholesale & retail | 2024 |
| Steam Bridge Developments Limited | Construction | 2018 |
| Stellantis Financial Services UK Limited | Wholesale & retail | 1971 |
| Steritech Limited | Wholesale & retail | 1987 |
| Steritech Pharma Limited | Professional & scientific | 2010 |
| Sterling Horizon Limited | Real estate | 2015 |
| Steve Lauder Ltd | Construction | 2021 |
| Stewart Crest Holdings Limited | Financial services | 2026 |
| Stewarts Group Ltd | Professional & scientific | 2023 |
| Stobb House Farm Limited | Extraterritorial | 2026 |
| Stocksigns Limited | Manufacturing | 1955 |
| Stoneman Funeral Service Limited | Other services | 1999 |
| Stoneman Group Holdings Limited | Financial services | 2020 |
| STORE4BIZ Limited | Water & waste | 2008 |
| Storrington Sand Quarry Limited | Mining & quarrying | 2022 |
| Strategic Foresight Ltd | Professional & scientific | 2024 |
| Strategic Testing Solutions Limited | Information & communication | 2024 |
| Strathavon Property Trust Limited | Real estate | 1947 |
| Stratos Property Services Limited | Construction | 2020 |
| Streat Motor Services Ltd | Wholesale & retail | 2019 |
| Streat Motor Tyres Ltd | Wholesale & retail | 2024 |
| Street Cars Redhill Limited | Transport & logistics | 2011 |
| Street Tyres Ltd | Wholesale & retail | 2016 |
| Streetvolt Clothing Ltd | Wholesale & retail | 2025 |
| Striking Faces Ltd | Professional & scientific | 2012 |
| Stripe Consulting Limited | Professional & scientific | 2010 |
| Structure-Tec LLP | | 2012 |
| Structured Methodologies (Global) Ltd | Information & communication | 2012 |
| Structured Methodologies (Southern) Ltd | Information & communication | 2023 |
| Stuart Value Investments Ltd | Professional & scientific | 2022 |
| Studio Eclat Ltd | Other services | 2025 |
| Studio Mundi Ltd | Wholesale & retail | 2021 |
| Stymieprimetrade Ltd | Wholesale & retail | 2023 |
| Suburb & City Limited | Construction | 2013 |
| SUD Health Ltd | Real estate | 2024 |
| SUD Real Estate Ltd | Real estate | 2025 |
| Sueno Investments Ltd | Real estate | 2023 |
| Suffolk Dairies Limited | Wholesale & retail | 2013 |
| Summit Print Limited | Manufacturing | 1991 |
| Summit Print Properties Limited | Financial services | 2008 |
| Sunday Blessing African Foods Ltd | Wholesale & retail | 2026 |
| Sunday Service Ltd | Administrative & support | 2026 |
| Sunisa Media Ltd | Information & communication | 2025 |
| Sunnyside 2025 Ltd | Construction | 2025 |
| Sunrays Properties Limited | Real estate | 2022 |
| Sunshine Security Solutions Limited | Administrative & support | 2012 |
| Superior Roofers and Decorators Ltd | Construction | 2025 |
| Superior Roofing Group Ltd | Construction | 2021 |
| Surfing Green Limited | Wholesale & retail | 2010 |
| Surrey Airport Transfers Ltd | Transport & logistics | 2018 |
| Surrey Architects Limited | Extraterritorial | 2019 |
| Surrey Fire Safety Solutions Limited | Construction | 2012 |
| Surrey Flooring (Merstham) Ltd | Construction | 2023 |
| Surrey Flooring (Redhill) Limited | Construction | 2015 |
| Surrey Heating & Plumbing Ltd | Construction | 2021 |
| Surrey Marketing Gurus Ltd | Professional & scientific | 2020 |
| Surrey Meats Limited | Wholesale & retail | 2024 |
| Surrey Moves Limited | Transport & logistics | 2017 |
| Surrey Plant Hire Ltd | Manufacturing | 2019 |
| Surrey Plastering and Rendering Limited | Construction | 2021 |
| Surrey Premier Care Services Ltd | Health & social care | 2024 |
| Surrey Single PLY Roofing Limited | Construction | 2011 |
| Surrey Skills Limited | Construction | 2017 |
| Surrey Speech Therapy Limited | Health & social care | 2018 |
| Surrey Stove Installations Ltd | Construction | 2015 |
| Surrey Used Cars Limited | Wholesale & retail | 2024 |
| Surya Skin & Wellness Ltd | Other services | 2025 |
| Susie Bailey Limited | Extraterritorial | 2016 |
| Sussex Auto Care Limited | Wholesale & retail | 2010 |
| Sustainability Experts Limited | Administrative & support | 2014 |
| Sustainability Steps Ltd | Professional & scientific | 2025 |
| Susy Radio Limited | Information & communication | 2008 |
| Sutton and East Surrey Group Holdings Limited | Financial services | 2013 |
| SV Food and Wine (Surrey) Ltd | Wholesale & retail | 2019 |
| SVJ Solutions Ltd | Health & social care | 2022 |
| Svup Property Limited | Real estate | 2025 |
| SW1 Hair & Beauty Limited | Other services | 2007 |
| SW1 Refurb (Group) Ltd | Construction | 2024 |
| SW1 Refurb (Southern) Ltd | Construction | 2025 |
| SW3 Services Ltd | Construction | 2018 |
| Swanetra Consulting Ltd | Professional & scientific | 2021 |
| Swarm Limited | Administrative & support | 2009 |
| Swift Fleet Services Limited | Professional & scientific | 2016 |
| Swimming Pool and Spa Solutions Limited | Construction | 2017 |
| Swiss Image UK Ltd | Wholesale & retail | 2025 |
| Swole Group Ltd | Wholesale & retail | 2017 |
| Sworkl Ltd | Information & communication | 2026 |
| SWT Advisory Limited | Professional & scientific | 2025 |
| Swyft Executive Ltd | Transport & logistics | 2020 |
| Sycamores (Kenley) Management Company Limited | Real estate | 2022 |
| Symbiotic Futures Limited | Professional & scientific | 2023 |
| Sync Software Limited | Information & communication | 2022 |
| Syncskills Ltd | Education | 2017 |
| Synergy C&C Property Limited | Real estate | 2018 |
| T & H Consulting (London) Ltd | Professional & scientific | 2024 |
| T & J Properties Limited | Construction | 2020 |
| T Ball Ltd | Transport & logistics | 2026 |
| T Hutchinson Consultancy Limited | Professional & scientific | 2019 |
| T S Mclaughlin Groundworks Ltd | Construction | 2025 |
| T-Mac Industries Ltd | Professional & scientific | 2002 |