| Station Tyres & Auto Service Ltd | Administrative & support | 2018 |
| Steedcourt Limited | Real estate | 1988 |
| Steelstall Ltd | Construction | 2025 |
| Stefanache Transport Limited | Transport & logistics | 2019 |
| Stephen Hanson Decor Ltd | Construction | 2018 |
| Stephens Accountancy Services Limited | Real estate | 2002 |
| Steve Brierley Sound Ltd | Information & communication | 2010 |
| Steve Fowle Plastering Limited | Construction | 2025 |
| STF Cleaning Construction Ltd | Administrative & support | 2022 |
| STH Roofing Ltd | Construction | 2020 |
| STI Cars for Sale Limited | Wholesale & retail | 2022 |
| Stitched Peaks HAT Co Ltd | Manufacturing | 2026 |
| STM Property Lettings Ltd | Real estate | 2023 |
| Stone Acre Partners UK Ltd | Professional & scientific | 2026 |
| Stone and Sons Estates Ltd | Real estate | 2025 |
| Stone Cold Tattoos Ltd | Extraterritorial | 2022 |
| Stonecastle Homes Limited | Real estate | 2010 |
| Stonecastle Investments Limited | Real estate | 2017 |
| Storelogs Holdings Limited | Financial services | 2022 |
| Storelogs Limited | Manufacturing | 2009 |
| Storm Properties Limited | Real estate | 2011 |
| STP Electrical Ltd | Construction | 2025 |
| Strang Worldwide Limited | Real estate | 2025 |
| Strategic Group Ltd | Construction | 2020 |
| Stress Check Training Limited | Administrative & support | 2006 |
| Stretton Consultants Limited | Professional & scientific | 2022 |
| Structural Asset Consulting Engineers Ltd | Professional & scientific | 2013 |
| Stsbg Ltd | Construction | 2024 |
| Studio Brett Ltd | Professional & scientific | 2019 |
| STUDIO91 Architecture Ltd | Professional & scientific | 2020 |
| STW Catering Limited | Hospitality | 2013 |
| Stylehaus Windows and Doors Ltd | Construction | 2025 |
| Subli-Print Associates Ltd | Manufacturing | 2017 |
| Successful Outcomes Ltd | Information & communication | 2023 |
| Suleman's Fast Food Limited | Hospitality | 2021 |
| Summer MAY Ltd | Real estate | 2020 |
| Summers Dog Grooming Ltd | Other services | 2023 |
| Sun-Gen Ltd | Energy | 2024 |
| Suntan Limited | Other services | 2016 |
| Sunungurayi Limited | Health & social care | 2022 |
| Surveys Direct Ltd | Professional & scientific | 2026 |
| Susananne Limited | Extraterritorial | 2026 |
| Sutcliffe Group Limited | Professional & scientific | 1983 |
| Sutcliffe Play Limited | Manufacturing | 1947 |
| Sutcliffe Play Trustees Limited | Extraterritorial | 2010 |
| Sutton-Mcgough Solutions Ltd | Professional & scientific | 2016 |
| SW Mixer UK Limited | Transport & logistics | 2016 |
| Sweet Allsorts Confectionery Ltd | Wholesale & retail | 2025 |
| Sweet Shop Shots Ltd | Wholesale & retail | 2023 |
| Swift Access Automotive Gates Ltd | Manufacturing | 2019 |
| Swift Access Scaffolding Limited | Administrative & support | 2003 |
| Swillington Plant Solutions Limited | Transport & logistics | 2025 |
| SY 4X4 Ltd | Wholesale & retail | 2016 |
| SY 4X4 Motor Co Ltd | Wholesale & retail | 2024 |
| SY Commercial Holdings Ltd | Real estate | 2026 |
| SY Property Services Ltd | Real estate | 2017 |
| Symons Building Contractors Limited | Construction | 2006 |
| T & C C Limited | Professional & scientific | 1997 |
| T & L Aquatics Ltd | Wholesale & retail | 2019 |
| T Askew and SON Limited | Transport & logistics | 2013 |
| T K Powder Coating Limited | Construction | 2018 |
| T&B Properties (Trading) Limited | Real estate | 2020 |
| T&H Property Renovation Limited | Construction | 2025 |
| T&T GAS Plumbing & Heating Ltd | Construction | 2025 |
| T-Ville Ltd | Construction | 2017 |
| T21 Accounting & Business Consultancy Limited | Professional & scientific | 2017 |
| T21 Case Management Limited | Health & social care | 2017 |
| T21 Educational Care & Support Limited | Education | 2017 |
| T21 Electrical Ltd | Construction | 2023 |
| T5 Retail Ltd | Wholesale & retail | 2024 |
| Tactical Search and Recovery Limited | Administrative & support | 2015 |
| TAD Property and Maintenance Limited | Real estate | 2025 |
| Taha Food Ltd | Hospitality | 2025 |
| Tailoring Limited | Wholesale & retail | 2004 |
| Tait Group International Limited | Financial services | 2017 |
| Tait International Ltd | Manufacturing | 2009 |
| Tait Technologies UK Ltd | Manufacturing | 1994 |
| Tait Theatre Engineering Ltd | Professional & scientific | 2007 |
| Talk Your Walk CIC | Health & social care | 2022 |
| Tall Trees Consulting Ltd | Professional & scientific | 2022 |
| Tallentire Consultancy Ltd | Professional & scientific | 2018 |
| Tanshelf Services Ltd | Administrative & support | 2025 |
| Tasteful Pontefract Limited | Hospitality | 2025 |
| Tasty House Food Ltd | Hospitality | 2022 |
| Tasty Kalavara Limited | Hospitality | 2026 |
| Tata Healthcare Limited | Health & social care | 2013 |
| Tax DAM Ltd | Professional & scientific | 2021 |
| Taxwise Accounts (SY) Limited | Professional & scientific | 2016 |
| Taxwise Accounts Limited | Professional & scientific | 2023 |
| Taylor Financial Solutions Ltd | Financial services | 2015 |
| Taylor Made Mortgage Advice Limited | Extraterritorial | 2018 |
| Taylored Design Solutions Limited | Professional & scientific | 2021 |
| Taylored Holmes Limited | Wholesale & retail | 2015 |
| TBC Luxurious Tobacco Ltd | Wholesale & retail | 2026 |
| TC Waste Consultants Ltd | Administrative & support | 2005 |
| Tcgb Plumbing and Heating Ltd | Other services | 2023 |
| Tcowen Ltd | Health & social care | 2022 |
| TD Security Solutions Ltd | Administrative & support | 2024 |
| Teachlaw Ltd | Education | 2024 |
| Teale Properties Limited | Real estate | 2025 |