| Stonelake of Halifax Limited | Extraterritorial | 2015 |
| Stonelake Properties Limited | Real estate | 2022 |
| Stoneleigh Plumbing Ltd | Construction | 2019 |
| Stones and Rosez Ltd | Manufacturing | 2024 |
| Stonewheel Limited | Professional & scientific | 2024 |
| Stoney Hall Farm Ltd | Agriculture & fishing | 2022 |
| Stoney Hall Holdings Ltd | Financial services | 2022 |
| Stoneyhurst Investments | Financial services | 2018 |
| Stoneyhurst Properties Limited | Financial services | 2019 |
| Stony Croft Lane Property Limited | Real estate | 2023 |
| Stop + Listen Ltd | Hospitality | 2025 |
| Stop Shop 24HRS Limited | Wholesale & retail | 2025 |
| Storm Ux/Ui Limited | Professional & scientific | 2017 |
| STORM-7 Consulting Limited | Professional & scientific | 2015 |
| Stormer Sound Limited | Professional & scientific | 2003 |
| Stott Thompson (Architects) Limited | Professional & scientific | 2000 |
| Stoutt Holdings Ltd | Financial services | 2026 |
| STQ Partners Ltd | Administrative & support | 2022 |
| STQ Ventures Limited | Real estate | 2025 |
| Strand Legal Services Limited | Professional & scientific | 2019 |
| Strangeway Capital Ltd | Financial services | 2026 |
| Strategic Reach Marketing Ltd | Professional & scientific | 2024 |
| Stravo Ltd | Wholesale & retail | 2025 |
| Streamline Racing Services Ltd | Arts & recreation | 2018 |
| Streetwise Driving School Limited | Education | 2003 |
| Structura Metalworks Limited | Manufacturing | 2025 |
| Structured Building & Renovations Ltd | Construction | 2019 |
| STS Developers Ltd | Construction | 2020 |
| Stsm Trading Limited | Real estate | 2024 |
| Stsm Wholesale Ltd | Wholesale & retail | 2024 |
| Stuarts Hardware Limited | Extraterritorial | 2021 |
| Stubb Estates Limited | Real estate | 2009 |
| Studio 15 Interiors Ltd | Professional & scientific | 2023 |
| STUDIO29 Design Ltd | Professional & scientific | 2019 |
| Study Counsellors Ltd | Education | 2024 |
| Study-Write Gcse Ltd | Education | 2018 |
| Study-Write Ltd | Education | 2012 |
| Stupor Beds and Mattresses Ltd | Manufacturing | 2025 |
| Style Property Limited | Hospitality | 2018 |
| Substep Ltd | Professional & scientific | 2024 |
| Sudworth Accountancy Services Limited | Professional & scientific | 2003 |
| Sugarbird Photography Ltd | Professional & scientific | 2018 |
| Sugden Bros (Builders) Ltd. | Construction | 1996 |
| Sugoi Property Limited | Real estate | 2024 |
| Sukhbal Ltd | Health & social care | 2021 |
| Sulemans Properties HX Ltd | Real estate | 2019 |
| Sultan Accountants Ltd | Professional & scientific | 2018 |
| Sultan Halifax Ltd | Hospitality | 2025 |
| Sumac Housing Limited | Construction | 2016 |
| Summerhouse Inc Ltd | Water & waste | 2016 |
| Summit Consulting and Training Limited | Administrative & support | 2003 |
| Summit Properties Limited | Professional & scientific | 2011 |
| Summit Retail Ltd | Wholesale & retail | 2026 |
| Sunbeam Technologies Ltd | Information & communication | 2011 |
| Sunberry's Retail Ltd | Wholesale & retail | 2023 |
| Sunbridge Road Investments Limited | Real estate | 1963 |
| Sunco Consulting Limited | Administrative & support | 2026 |
| Sundry Catering Ltd | Hospitality | 2023 |
| Sunflower Educational Psychology Ltd | Education | 2022 |
| Sunnah Club Ltd | Wholesale & retail | 2020 |
| Sunningdale (HX) Limited | Hospitality | 2021 |
| Sunny Gym Soft Play Limited | Arts & recreation | 2018 |
| Sunny Takeaway Limited | Hospitality | 2023 |
| Sunnybank Court Maintenance Limited | Extraterritorial | 1976 |
| Sunnybank Motorhome Hire Ltd | Administrative & support | 2024 |
| Sunnybank Pre-School | Education | 2004 |
| Sunnyvale Gardens Fisheries Limited | Agriculture & fishing | 2016 |
| Sunshades at Serenity Beauty Clinic Limited | Other services | 2002 |
| Sunshine and Spite Limited | Wholesale & retail | 2024 |
| Sunshine Together Ltd | Hospitality | 2024 |
| Sunside Service Station Limited | Wholesale & retail | 1980 |
| Supablue Ltd | Professional & scientific | 2019 |
| Superbike Specialists Ltd | Wholesale & retail | 2018 |
| Superciel Ltd | Transport & logistics | 2020 |
| Superconduct Ltd | Professional & scientific | 2025 |
| Superior Eco Lighting Systems Limited | Construction | 2017 |
| Supersonic IT Consulting Ltd | Information & communication | 2023 |
| Supervision Optics Limited | Wholesale & retail | 2015 |
| SUPPLIES2U Ltd | Wholesale & retail | 2024 |
| Supply Hub Ltd | Wholesale & retail | 2023 |
| SUPPLY247 Ltd | Wholesale & retail | 2026 |
| Support My Community CIC | Health & social care | 2025 |
| Support TOO Ltd | Professional & scientific | 2018 |
| Supporting Hands Care Services Ltd | Health & social care | 2014 |
| Surefire Computing Limited | Information & communication | 2000 |
| Surefix Motoring Centre Ltd | Wholesale & retail | 2026 |
| Suriya Noor Healthcare Ltd | Health & social care | 2023 |
| Surplus Assets Ltd | Other services | 2020 |
| Surrana Holdings Ltd | Financial services | 2025 |
| Surrana Housing UK Ltd | Real estate | 2023 |
| Surrana UK Ltd | Wholesale & retail | 2016 |
| Suzu Halifax Distributors Ltd | Wholesale & retail | 2025 |
| SW Agri Services Limited | Construction | 2024 |
| SW Plant & Equipment Hire Ltd | Administrative & support | 2019 |
| SW Property Management Ltd | Households | 2012 |
| Swales Leemar Limited | Real estate | 1986 |
| Swallowfields Farm Ltd | Agriculture & fishing | 2026 |
| Swanson Hewitt Limited | Wholesale & retail | 2003 |
| SWC Lettings Ltd | Real estate | 2025 |
| Sweeny Todds Barbers Limited | Other services | 2022 |