| Sneakr Co. Limited | Wholesale & retail | 2020 |
| Sneaky Limited | Manufacturing | 2019 |
| Sneha Joshi Limited | Transport & logistics | 2023 |
| Snem Boss Limited | Hospitality | 2025 |
| Snem Limited | Hospitality | 2018 |
| SNG Brothers Ltd | Wholesale & retail | 2022 |
| SNG News Limited | Wholesale & retail | 2026 |
| Snips Hair Ltd | Professional & scientific | 2002 |
| Snittongate Chief Ltd | Transport & logistics | 2014 |
| SNK Ventures Ltd | Hospitality | 2025 |
| SNM Plumbing and Heating Ltd | Construction | 2025 |
| Snosh Ltd | Information & communication | 2025 |
| Snow AJB Consulting Limited | Professional & scientific | 2024 |
| Snow Goose Accessories Limited | Wholesale & retail | 2014 |
| Snowden and Lycett Ltd | Real estate | 2020 |
| Snowed UP Developments Limited | Wholesale & retail | 2023 |
| Snowed UP Limited | Other services | 2023 |
| Snowpaw Ltd | Administrative & support | 2008 |
| SNP Investments Limited | Real estate | 1998 |
| SNP Property Ltd | Real estate | 2024 |
| Snsm Food Ltd | Hospitality | 2019 |
| Snug Haven Ltd | Real estate | 2023 |
| Snur Ltd | Real estate | 2024 |
| Snushall Construction Limited | Construction | 2016 |
| SNV Retail Ltd | Wholesale & retail | 2023 |
| SNY 1 Ltd | Wholesale & retail | 2026 |
| SO & MA Investments Limited | Financial services | 2017 |
| SO & T Consulting Limited | Wholesale & retail | 2017 |
| SO Chic LA Madeleine Vide Dressing Limited | Wholesale & retail | 2023 |
| SO Ferocious Ltd | Wholesale & retail | 2019 |
| SO Lazy Ltd | Wholesale & retail | 2022 |
| SO Lush Limited | Wholesale & retail | 2024 |
| SO Safeguarding Ltd | Education | 2020 |
| SO212 Ltd | Hospitality | 2016 |
| SO360 Limited | Professional & scientific | 2013 |
| Soabar Limited | Manufacturing | 2008 |
| Soaked in Nature Ltd | Manufacturing | 2021 |
| Soaky Nights Ltd | Wholesale & retail | 2020 |
| Soand Electrical Ltd | Construction | 2025 |
| Soand Meat Shop (Leicester) Ltd | Wholesale & retail | 2019 |
| Soap and Water Tattoos Ltd | Manufacturing | 2014 |
| Soap London Ltd | Arts & recreation | 2015 |
| Soar House Management (Quorn) Ltd | Households | 2006 |
| Soar Photographic Limited | Professional & scientific | 2006 |
| Soar Point Limited | Manufacturing | 2012 |
| Soar Property Group Ltd | Real estate | 2025 |
| Soar Sounds Promotions Ltd | Arts & recreation | 2024 |
| Soar Stone Ltd | Real estate | 2025 |
| Soar Valley Motor Services Ltd | Wholesale & retail | 2010 |
| Soar Valley Plastering Limited | Construction | 2016 |
| Soar Valley Projects Ltd | Construction | 2025 |
| Soba Properties Limited | Real estate | 2025 |
| Sobutas Ltd | Transport & logistics | 2014 |
| Social - Eyes Bistro Limited | Hospitality | 2025 |
| Social Care & Education Limited | Health & social care | 2007 |
| Social Gain Media Limited | Professional & scientific | 2025 |
| Social Gallery Community Interest Company | Education | 2024 |
| Social Graft Ltd | Professional & scientific | 2018 |
| Social Innovation People CIC | Professional & scientific | 2023 |
| Social Justice for ALL CIC | Professional & scientific | 2024 |
| Social Living Properties Limited | Real estate | 2013 |
| Social Padel Co. Ltd | Arts & recreation | 2026 |
| Social Solutions Practice Ltd | Extraterritorial | 2024 |
| Social Strategy Solutions Ltd | Professional & scientific | 2024 |
| Social Treats Limited | Other services | 2021 |
| Socially Aware Limited | Professional & scientific | 2025 |
| Socialpeach Ltd | Professional & scientific | 2019 |
| Society of Black Academics (SBA) | Information & communication | 2022 |
| Sock Draw Ltd | Manufacturing | 2019 |
| Sock Snob Holdings Limited | Wholesale & retail | 2025 |
| Sock Snob UK Ltd | Wholesale & retail | 2014 |
| Socks & Co (International) Limited | Wholesale & retail | 2000 |
| Socks Land Limited | Wholesale & retail | 2014 |
| Soden Plastics Limited | Wholesale & retail | 2006 |
| Sodha Bros Investments Limited | Real estate | 2026 |
| Sodhara Limited | Construction | 2025 |
| Sodhi & Co Estate Agents Limited | Real estate | 2009 |
| Sodhi Estates Limited | Households | 2019 |
| Sodhi Furniture & Carpets Ltd | Wholesale & retail | 2023 |
| Sodhi Group Ltd | Households | 2019 |
| SOE and Theint Ltd | Real estate | 2026 |
| SOE Security Ltd | Administrative & support | 2025 |
| Sofancy Ltd | Wholesale & retail | 2017 |
| Soffe.Co Limited | Health & social care | 2024 |
| Soffin Ltd | Financial services | 2021 |
| Sofia & Aryan Properties Limited | Real estate | 2018 |
| Sofia Residentials Ltd | Real estate | 2024 |
| Sofia's Coffee Ltd | Hospitality | 2025 |
| Sofital Ltd | Health & social care | 2019 |
| Soft Music Records Ltd | Information & communication | 2025 |
| Soft Peaks UK Ltd | Manufacturing | 2021 |
| Soft Play Parties Ltd | Arts & recreation | 2016 |
| Soft Touch Arts Limited | Arts & recreation | 1986 |
| Soft-Fm Consulting Limited | Professional & scientific | 2009 |
| Softerware Limited | Information & communication | 2025 |
| Softex Global Limited | Wholesale & retail | 2015 |
| Softline Digital Ltd | Information & communication | 2012 |
| Softoid Solutions Limited | Information & communication | 2015 |
| Softupsolutions Limited | Information & communication | 2024 |
| Software Compliance Holdings Ltd | Financial services | 2022 |