| Starclosing Ltd | Wholesale & retail | 2026 |
| Stareducation INT Limited | Education | 2025 |
| Starlight Leisure Ltd | Other services | 2025 |
| Starlight Ventures Ltd | Professional & scientific | 2025 |
| Starlighter Academy Ltd | Arts & recreation | 2019 |
| Starr City Customs Limited | Wholesale & retail | 2025 |
| Startling Ltd | Information & communication | 2019 |
| Starzlite Online Limited | Wholesale & retail | 2023 |
| State Debtco Limited | Financial services | 2015 |
| State Interco Limited | Financial services | 2015 |
| Stately Strategic Recruitment Group Limited | Administrative & support | 2018 |
| Station House Court Management Company Limited | Households | 2023 |
| Stay Curious Films Ltd | Information & communication | 2019 |
| Stay Luxes Ltd | Hospitality | 2023 |
| Stayed Ltd | Hospitality | 2019 |
| Stayover Travel Limited | Information & communication | 2025 |
| Stbi Ltd | Health & social care | 2020 |
| STC Sycamore Consulting Ltd | Professional & scientific | 2024 |
| STE5 Ltd | Professional & scientific | 2025 |
| Stead Commercial Estates (Albert Court) Limited | Real estate | 2014 |
| Stead Commercial Estates (ST Andrew's Court) Limited | Real estate | 2014 |
| Stead Commercial Estates (Tandem) Limited | Real estate | 2016 |
| Stead Commercial Estates (Victoria Court) Limited | Real estate | 2017 |
| Stead Kitchen Design Limited | Manufacturing | 2021 |
| Steadfast Tapes Ltd | Manufacturing | 2009 |
| Steads Property Holdings Limited | Real estate | 2025 |
| Stealth Fitness Ltd | Arts & recreation | 2022 |
| Sted Inspections Ltd | Education | 2024 |
| Steel Works by HF Ltd | Manufacturing | 2022 |
| Steelcraft Design Limited | Manufacturing | 2019 |
| Stefan's Courier Servics Ltd | Transport & logistics | 2018 |
| Stella Tribe Ltd | Wholesale & retail | 2020 |
| Stems Design Limited | Professional & scientific | 2018 |
| Step Into Football Ltd | Arts & recreation | 2025 |
| Step Logic Limited | Professional & scientific | 2021 |
| Step Oncology Limited | Health & social care | 2026 |
| Step UP Children and Family Services Limited | Health & social care | 2017 |
| Steph Oppermann Ltd | Professional & scientific | 2014 |
| Steph Tembo Properties Ltd | Real estate | 2025 |
| Stephen & T Ltd | Construction | 2021 |
| Stephen Heap Holdings Limited | Professional & scientific | 2018 |
| Stephen Hill (Consultant Anaesthetist Services) Ltd | Health & social care | 2014 |
| Stephens&Sanders Ltd | Administrative & support | 2016 |
| Stephenson Architects Ltd | Professional & scientific | 2018 |
| Stepping Stones Finance Ltd | Real estate | 2025 |
| Steprightorthotics Ltd | Other services | 2016 |
| Steps to Resilience Ltd | Health & social care | 2020 |
| Steri - POD Limited | Manufacturing | 2007 |
| Steri-Pac Limited | Extraterritorial | 2020 |
| Sterling Care Services Ltd | Administrative & support | 2011 |
| Sterling Mill Limited | Wholesale & retail | 2013 |
| Sterling Universal (Wakefield) Ltd | Real estate | 2025 |
| Sterling Universal Ltd | Construction | 2017 |
| Steve Ball Recruitment Limited | Administrative & support | 2015 |
| Steve Steinman Productions Ltd | Arts & recreation | 2013 |
| Steve Sykes Management Ltd | Real estate | 2006 |
| Steve Taylor Hairdressing Limited | Other services | 2022 |
| Steve Taylor Healthcare Consultancy Ltd | Professional & scientific | 2026 |
| Stewart Pearson Builders Limited | Construction | 2015 |
| Sticker Lane Convenience Ltd | Wholesale & retail | 2026 |
| Sticker Property Limited | Real estate | 2023 |
| Sticky Jugs Ltd | Wholesale & retail | 2025 |
| Stickyorder Limited | Wholesale & retail | 2024 |
| Stillwaters Counselling Services Limited | Health & social care | 2020 |
| Stillwoven Ltd | Administrative & support | 2025 |
| Stinton Automotive Ltd | Professional & scientific | 2024 |
| Stirley Management Services Limited | Professional & scientific | 2020 |
| Stitch & Co Interiors Limited | Manufacturing | 2018 |
| Stitch Express Huddersfield Ltd | Other services | 2025 |
| Stix Internet Limited | Information & communication | 2017 |
| Stjohnapartments Ltd | Real estate | 2026 |
| STK Management Ltd | Administrative & support | 2017 |
| STL Tiling Limited | Construction | 2021 |
| STM Medical Limited | Health & social care | 2022 |
| Stochastic House Limited | Professional & scientific | 2020 |
| Stocksgate Joinery Limited | Construction | 2003 |
| Stocksmoor Consultancy Limited | Financial services | 2017 |
| Stocksmoor Limited | Administrative & support | 2009 |
| Stoic Conditioning Ltd. | Health & social care | 2015 |
| Stoic Options Ltd | Professional & scientific | 2021 |
| Stone Arch Properties Ltd | Real estate | 2023 |
| Stone Cliff Aggregates Ltd | Mining & quarrying | 2020 |
| Stonecrown Developments Limited | Construction | 1998 |
| Stonefield Estates and Properties Ltd | Real estate | 2025 |
| Stoneleigh Pavilions Property Company Limited | Financial services | 2021 |
| Stonepoint Estates Ltd | Real estate | 2025 |
| Stonewall Retail Limited | Wholesale & retail | 2018 |
| Stonewood Construction HD Ltd | Construction | 2025 |
| Stop & Shop Huddersfield Limited | Wholesale & retail | 2022 |
| Stop ND Shop Limited | Wholesale & retail | 2025 |
| Stopcocks Group Limited | Construction | 2014 |
| Stopcocks Tradeswomen CIC | Administrative & support | 2020 |
| Stopcocks Women Plumbers Ltd | Construction | 2022 |
| Storage Panda Ltd | Transport & logistics | 2024 |
| Storage Panda York Ltd | Transport & logistics | 2025 |
| Store Wise Ltd | Transport & logistics | 2023 |
| Stores Direct Limited | Wholesale & retail | 2004 |
| Stork Beta Limited | Financial services | 2014 |
| Storm Fire & Security (Yorkshire) Ltd | Administrative & support | 2022 |
| Stormbrands Holdings Limited | Financial services | 2024 |