| Snapfit Dentures Ltd | Health & social care | 2025 |
| SNB Digital Limited | Education | 2018 |
| SNB Group Holdings Limited | Manufacturing | 2025 |
| SNC Motors Limited | Manufacturing | 2022 |
| SND Marsand Ltd | Transport & logistics | 2025 |
| Sneyd Estates Ltd | Real estate | 2017 |
| SNI Holdings Ltd | Construction | 2023 |
| Snooty FOX Ltd | Manufacturing | 2010 |
| Snoozed Ltd | Hospitality | 2025 |
| Snopy Limited | Wholesale & retail | 2026 |
| Snousten Ltd | Transport & logistics | 2021 |
| Snowhill Motors Limited | Wholesale & retail | 2015 |
| SNP Heating Solution Ltd | Construction | 2025 |
| SNP Property Holdings Ltd | Real estate | 2024 |
| SNR ENG Limited | Construction | 2019 |
| SNS Estates Limited | Real estate | 2019 |
| SNS Properties Management Ltd | Real estate | 2025 |
| Snszora Limited | Hospitality | 2025 |
| SO Eden Ltd | Wholesale & retail | 2024 |
| SO Rich Ltd | Professional & scientific | 2026 |
| SO Smart Services Ltd | Information & communication | 2025 |
| Soal Marine AB Ltd | Construction | 2025 |
| Soar Digital Marketing Limited | Information & communication | 2023 |
| Soaring Star Ltd | Health & social care | 2023 |
| SOC Centre of Research & Advanced Technologies Limited | Professional & scientific | 2024 |
| SOC Estates Limited | Real estate | 2024 |
| SOC Learning Group Limited | Information & communication | 2023 |
| Soccer Coaching 2000 Limited | Arts & recreation | 1999 |
| Sochorika Ltd | Administrative & support | 2019 |
| Social 90 Ltd | Professional & scientific | 2019 |
| Social Buddies Ltd | Information & communication | 2025 |
| Social Development Integrated Associatio (Sdia) CIC | Health & social care | 2025 |
| Social Engage Ltd | Information & communication | 2018 |
| Social Geekx Ltd | Information & communication | 2026 |
| Social Media Cares Ltd | Professional & scientific | 2022 |
| Social Monetix Ltd | Information & communication | 2026 |
| Social Siluru Limited | Administrative & support | 2021 |
| Socialmediatech Ltd | Administrative & support | 2026 |
| Socialmsco Ltd | Wholesale & retail | 2023 |
| Socksan Ltd | Wholesale & retail | 2025 |
| Sodhi & Sons Ltd | Transport & logistics | 2024 |
| Sodhi Apra Holdings Limited | Real estate | 2021 |
| Sodium Solutions Limited | Information & communication | 2005 |
| Sofa Auction Limited | Wholesale & retail | 2010 |
| Sofabliss Ltd | Wholesale & retail | 2023 |
| Sofas of Wolverhampton Limited | Wholesale & retail | 2016 |
| Sofi Construction Ltd | Construction | 2019 |
| Sofi Flakes Limited | Wholesale & retail | 2026 |
| Sofitel Limited | Transport & logistics | 2021 |
| Soft Control Limited | Manufacturing | 1990 |
| Soft Trousers Limited | Professional & scientific | 2012 |
| Soft Wipe Ltd | Wholesale & retail | 2024 |
| Softbeans Technologies UK Ltd | Information & communication | 2026 |
| Softixa Limited | Wholesale & retail | 2026 |
| Softnexis Technologies Ltd | Wholesale & retail | 2026 |
| Softtrade Communications Ltd | Wholesale & retail | 2020 |
| Software Solutions LD Ltd | Wholesale & retail | 2025 |
| Sohal Foods Ltd | Hospitality | 2023 |
| Sohal Shopfront and Shutters Ltd | Construction | 2020 |
| Sohal Windows and Doors Ltd | Construction | 2024 |
| Sohan Capital Ltd | Construction | 2023 |
| Sohan Developments Ltd | Construction | 2024 |
| Sohan Group Ltd | Real estate | 2021 |
| Sohcial Ltd | Professional & scientific | 2019 |
| Soho Sweets Ltd | Wholesale & retail | 2026 |
| Soigner Limited | Health & social care | 2016 |
| Solace Investments Ltd | Real estate | 2025 |
| Solar Cross Consultants Limited | Professional & scientific | 2017 |
| Solar Regen Limited | Professional & scientific | 2023 |
| Solar Structures Installations Ltd | Construction | 2022 |
| Solar Sync Solution Ltd | Wholesale & retail | 2026 |
| Solberg International (UK), Ltd. | Wholesale & retail | 2002 |
| Solcon Limited | Transport & logistics | 2017 |
| Sole & Supply Ltd | Wholesale & retail | 2024 |
| Sole 2 Sole Enterprises Ltd | Wholesale & retail | 2019 |
| Soleshopbyj Ltd | Wholesale & retail | 2025 |
| Soley Property Solutions Limited | Real estate | 2017 |
| Solidgroud Group Ltd | Construction | 2026 |
| Soligen International Inc Ltd | Wholesale & retail | 2026 |
| Solis Properties Limited | Real estate | 2017 |
| Sollinise Ltd | Administrative & support | 2019 |
| Solmove Renewables Limited | Transport & logistics | 2024 |
| Solowolf Limited | Information & communication | 2024 |
| Solusec Ltd | Information & communication | 2021 |
| Solutex Limited | Water & waste | 2002 |
| Solutionbirdie Ltd | Wholesale & retail | 2024 |
| Solutioned Limited | Information & communication | 2019 |
| Solvency Services Limited | Professional & scientific | 1967 |
| Soma Engineering Ltd | Manufacturing | 2025 |
| Somaechez Cleaning and Garden Services Ltd | Administrative & support | 2025 |
| Somal Estates Limited | Real estate | 2025 |
| Somerford Trading Ltd | Wholesale & retail | 2024 |
| Somerset-D Consulting Ltd | Administrative & support | 2015 |
| Somnat Limited | Professional & scientific | 2021 |
| SON and Parker Ltd | Real estate | 2021 |
| Sona Foods Ltd | Wholesale & retail | 2016 |
| Sona Retail Limited | Wholesale & retail | 2020 |
| Sonbulla Ltd | Health & social care | 2019 |
| Sonder Meetings & Events Ltd | Professional & scientific | 2018 |
| Sondhi Transport Ltd | Transport & logistics | 2021 |