| Spiwe Properties Ltd | Real estate | 2023 |
| SPJ Property Limited | Real estate | 2024 |
| SPL Insulations Ltd | Construction | 2025 |
| Splash Bathrooms & Kitchens Ltd | Construction | 2012 |
| Splash Car Valeting Ltd | Other services | 2018 |
| Splash GSM UK Ltd | Wholesale & retail | 2022 |
| Splash Hand Car Wash (Hudds) Ltd | Administrative & support | 2021 |
| Splitpixel Creative Limited | Professional & scientific | 2008 |
| SPO Productions Limited | Arts & recreation | 2017 |
| Sport Cares Limited | Health & social care | 2024 |
| Sport Management Limited | Arts & recreation | 2015 |
| Sporthub Technologies Ltd | Information & communication | 2021 |
| Sportica Inc Ltd | Wholesale & retail | 2016 |
| Sports Risk Group Limited | Administrative & support | 2015 |
| Sportstop Limited | Wholesale & retail | 2007 |
| Spot on Electrical Ltd | Construction | 2021 |
| Spray IT, Don’T SAY IT ! Ltd | Administrative & support | 2025 |
| Sprayed UP Ltd | Other services | 2018 |
| Spring View Management Company Limited | Real estate | 2020 |
| Spring Villa Management Company Ltd | Real estate | 2024 |
| Springfield Precision Engineering Limited | Manufacturing | 2003 |
| Springwood Projects Limited | Administrative & support | 2005 |
| Sprinkle Town Ltd | Wholesale & retail | 2025 |
| Sprouting Studio Ltd | Professional & scientific | 2026 |
| Spruce Hair & Beauty Limited | Wholesale & retail | 2025 |
| Spud Stop (FL) Ltd | Hospitality | 2026 |
| SPV Roca Ltd | Real estate | 2024 |
| SPW Consultancy Services Ltd | Professional & scientific | 2019 |
| Square Space Properties Ltd | Real estate | 2016 |
| Squeaky Clean Mobile Valeting Ltd | Administrative & support | 2018 |
| Squidgers Limited | Real estate | 2025 |
| SR Booth Transport Ltd | Transport & logistics | 2022 |
| SR Optical Consultancy Limited | Health & social care | 2024 |
| SRA Medical Limited | Real estate | 2019 |
| SRB GAS Services Ltd | Construction | 2016 |
| SRC Assets Ltd | Professional & scientific | 2020 |
| SRC Connect Ltd | Professional & scientific | 2020 |
| Sree Medical Ltd | Health & social care | 2017 |
| Srehal Limited | Wholesale & retail | 2026 |
| SRQ Properties Limited | Construction | 2026 |
| SRR Detailing Ltd | Wholesale & retail | 2022 |
| SRR Property Investments Ltd | Real estate | 2023 |
| SRS Cooling and Heating Ltd | Construction | 2022 |
| SS Analysis Ltd | Administrative & support | 2023 |
| SS Commerce Ltd | Information & communication | 2025 |
| SS Infinitus Limited | Wholesale & retail | 2023 |
| SS Johal & a Johal and Sons Ltd | Transport & logistics | 2022 |
| SS Recovery Bodies Ltd | Manufacturing | 2023 |
| Ssam Property Ltd | Real estate | 2024 |
| Ssat & Tcwl Holdings Limited | Financial services | 2024 |
| Ssbd International Limited | Wholesale & retail | 2019 |
| Ssbk Private Ltd | Hospitality | 2024 |
| SSC Yachts Dubai Limited | Administrative & support | 2018 |
| Ssjm Investments Ltd | Real estate | 2024 |
| SSK Estates Ltd | Real estate | 2021 |
| SSS Finance Group Ltd | Professional & scientific | 2024 |
| Ssvs IT Solutions Ltd | Information & communication | 2025 |
| SSW Harrogate Ltd | Wholesale & retail | 2017 |
| SSW Huddersfield Ltd | Wholesale & retail | 2017 |
| ST Helens Kitchens Ltd | Manufacturing | 2016 |
| ST Investment Holdings Limited | Real estate | 2026 |
| ST Medical Limited | Health & social care | 2022 |
| ST Thomas (Yorkshire) LLP | | 2017 |
| ST Traders PVT Ltd | Wholesale & retail | 2024 |
| ST. Hilda's Court (Whitby) Limited | Households | 1975 |
| ST. Hoggs Property Investments Limited | Administrative & support | 2018 |
| Stacey Properties UK Ltd | Real estate | 2023 |
| Stackshaw Limited | Manufacturing | 1985 |
| Stada UK Holdings Ltd. | Wholesale & retail | 2013 |
| Stadium Self-Storage Bradford Limited | Transport & logistics | 2020 |
| Stadium Self-Storage Limited | Transport & logistics | 2020 |
| Stadium Self-Storage York Limited | Transport & logistics | 2020 |
| Stafford Driving Centre Ltd | Arts & recreation | 2025 |
| Stafford Mills Holdings Limited | Wholesale & retail | 2009 |
| Stafford Mills Limited | Wholesale & retail | 2023 |
| Stafford Mills Properties Limited | Real estate | 2023 |
| Stag HD58 Ltd | Hospitality | 2022 |
| Stage Crafters Ltd | Arts & recreation | 2024 |
| Stagmal Ltd | Information & communication | 2021 |
| Stake Consulting Ltd | Professional & scientific | 2022 |
| Stamford House Consulting Ltd | Professional & scientific | 2014 |
| Stan Construction HD Ltd | Construction | 2026 |
| Stan Moody Snooker Ltd | Arts & recreation | 2025 |
| Standard Building Venture UK Ltd | Administrative & support | 2019 |
| Standout-Online.Com Ltd | Information & communication | 2010 |
| Stanley Land Drainage Limited | Construction | 1999 |
| Stansfield Landscaping Services Limited | Administrative & support | 2024 |
| Stanwell Technic Ltd. | Manufacturing | 1990 |
| Staples Papers Ltd | Manufacturing | 2021 |
| Star Cars Huddersfield Ltd | Transport & logistics | 2024 |
| Star Dog Wash Ltd | Administrative & support | 2022 |
| Star Foods HUD Ltd | Wholesale & retail | 2024 |
| Star Garage (Shelley) Limited | Wholesale & retail | 2024 |
| Star Locums Ltd | Wholesale & retail | 2008 |
| Star Mini Market (HD) Ltd | Wholesale & retail | 2025 |
| Star Mortgages Limited | Financial services | 2022 |
| Star Scaffolding Yorkshire Limited | Extraterritorial | 2016 |
| Star Trade Accessories Ltd | Wholesale & retail | 2016 |
| Star Travel and Cargo Ltd | Transport & logistics | 2020 |
| Star Warehouse Ltd | Wholesale & retail | 2024 |