| SRN Construction and Joinery Ltd | Construction | 2026 |
| SS Food Store (BFD) Ltd | Wholesale & retail | 2021 |
| Ssjd Investments Ltd | Real estate | 2020 |
| SSK Hire 1 Ltd | Transport & logistics | 2026 |
| ST ENG Limited | Professional & scientific | 2023 |
| ST John’S Cross Property Investments Ltd | Construction | 2026 |
| Stableford's Limited | Manufacturing | 2003 |
| Stacey Homes Ltd | Real estate | 2026 |
| Stadium Catering Ltd | Hospitality | 2025 |
| Stairlifts Direct Limited | Administrative & support | 1999 |
| Stangs Limited | Manufacturing | 1993 |
| Stapleton Joinery Limited | Manufacturing | 2024 |
| Star Courier Services Limited | Transport & logistics | 2020 |
| Star Cuts Yorkshire Limited | Other services | 2026 |
| Star Real Estate Solutions Ltd | Real estate | 2026 |
| Star Youth Centre Ltd | Education | 2026 |
| Starbox Jewellery Ltd | Manufacturing | 2015 |
| Station Road Cars Ltd | Wholesale & retail | 2018 |
| Stax Ventilation Products & Services Ltd | Construction | 2024 |
| Stayhome Stairlifts Ltd | Wholesale & retail | 2011 |
| STC - Safeguarding Through Communities C.I.C. | Education | 2020 |
| Steeton Grove Autocare 2015 Limited | Wholesale & retail | 2015 |
| Steeton Grove Management Company Limited | Real estate | 2004 |
| Steeton Healthcare Limited | Health & social care | 1998 |
| Stefan Mellor Engineering Services Ltd | Professional & scientific | 2023 |
| Stefano's Partnership LLP | | 2015 |
| Stell Cardboard Tubes Limited | Extraterritorial | 2014 |
| Stellapoint Ltd | Wholesale & retail | 2025 |
| Stephen Harris Design Ltd | Professional & scientific | 2013 |
| Stephen Jeffrey Limited | Extraterritorial | 2025 |
| Stephen Kenrick Ltd | Transport & logistics | 2015 |
| Stephen Steel Limited | Manufacturing | 2013 |
| Stepping Stones Management Company (East Morton) Limited | Households | 1998 |
| Steve Mitton Joinery Limited | Construction | 2016 |
| Steve Moseley Limited | Construction | 2014 |
| Steve Thorpe & SON Gardening Ltd | Administrative & support | 2013 |
| Steven Lord Properties Limited | Real estate | 2024 |
| Stirk Lambert & Co Limited | Extraterritorial | 2011 |
| Stix Moto Ltd | Wholesale & retail | 2024 |
| Stockbridge Tyres Limited | Wholesale & retail | 2016 |
| Stonebridge Legal Limited | Professional & scientific | 2026 |
| Stonekey Housing Group Limited | Real estate | 2024 |
| Stonemasonsuk Ltd | Construction | 2020 |
| Stonewhite Care Limited | Health & social care | 2024 |
| Stoneystreet Ltd | Real estate | 2022 |
| Storers Property Development Limited | Construction | 2024 |
| Storers Reliable Cars Limited | Wholesale & retail | 2025 |
| Storm IS Warm Limited | Information & communication | 2024 |
| Storm SIX Ltd | Information & communication | 2022 |
| Stormlight Studio Limited | Information & communication | 2021 |
| Storylines Interior Design Limited | Professional & scientific | 2017 |
| Stott O'Connell and Company Limited | Manufacturing | 1979 |
| Stott Ventures Ltd | Other services | 2020 |
| Stple Limited | Wholesale & retail | 2025 |
| Stratarise Limited | Wholesale & retail | 2019 |
| Stratbridge Finance Limited | Financial services | 2025 |
| Strategic Solutions (Northern) Limited | Information & communication | 2008 |
| Strathawn Advisors Ltd | Professional & scientific | 2023 |
| Stratton Travel Ltd | Transport & logistics | 2025 |
| Strawberry House Property Management Ltd | Households | 2017 |
| Stray Reeds Ltd. | Manufacturing | 2016 |
| Streamline Properties (Keighley) Ltd | Other services | 2021 |
| Stress Free Training Ltd | Education | 2018 |
| STS Welding Ltd | Manufacturing | 2017 |
| Stuart Conroy Limited | Professional & scientific | 2007 |
| Stuart Cooper Osteopath Limited | Health & social care | 2003 |
| Studio 8 Digital Dental Laboratory Limited | Manufacturing | 2019 |
| Studio Print Press Limited | Manufacturing | 2019 |
| Stylz Keighley Ltd | Other services | 2025 |
| Subhan Builders & Roofers Limited | Construction | 2017 |
| Subhan Catering Limited | Hospitality | 2022 |
| Sublime GAS Services Limited | Construction | 2021 |
| Subtle Insight Ltd | Health & social care | 2022 |
| Sugar Rush Creamery Limited | Hospitality | 2017 |
| Sugden Contractors Limited | Agriculture & fishing | 2012 |
| Sullivan Recruitment Ltd | Administrative & support | 2015 |
| Sully's Private Ltd | Wholesale & retail | 2025 |
| Summit Groomer Training Group Limited | Other services | 2014 |
| Summit Wholesalers Limited | Wholesale & retail | 2024 |
| Sun Logistics Solutions Limited | Transport & logistics | 2025 |
| Sunderland Developments Limited | Construction | 2016 |
| Sunil Limited | Health & social care | 2018 |
| Sunnydale Studio Ltd | Arts & recreation | 2018 |
| Super Hand Car Wash Yorkshire Ltd | Other services | 2019 |
| Superstop Convenience Store Keighley Limited | Wholesale & retail | 2023 |
| Supra GYN Ltd | Health & social care | 2024 |
| Sushi Home Town(Keighley) Limited | Hospitality | 2022 |
| Sustainable Coating Solutions Ltd | Professional & scientific | 2023 |
| Sutton Court at Sutton in Craven Management Limited | Households | 2017 |
| Sutton Playgroup Ltd | Education | 2012 |
| Suttons Transport Services Ltd | Transport & logistics | 2022 |
| Swallow Dental Supplies Limited | Wholesale & retail | 1998 |
| Swansea Lift Repair & Service Ltd. | Construction | 2001 |
| Swansea Lifts Ltd. | Construction | 2004 |
| Swift Electrical & Security Ltd | Construction | 2025 |
| Swift Memorial Services Ltd | Manufacturing | 2016 |
| Swift Properties (BFD) Ltd | Real estate | 2019 |
| Swift Solutions Pest Control Ltd | Administrative & support | 2024 |
| Swimstart | Education | 2004 |
| Switch Hitters Promotions Ltd | Arts & recreation | 2025 |