| Sims Entertainment Ltd | Hospitality | 2024 |
| SIR Jasper Holdings Ltd | Arts & recreation | 2024 |
| SIW Corporations Ltd | Professional & scientific | 2011 |
| SK Business Consultancy Ltd | Professional & scientific | 2010 |
| SK Car Sales Ltd | Wholesale & retail | 2024 |
| Skill Safe Training Limited | Education | 2025 |
| Skills Kitchen & Wild Thing Mushroom Farm CIC | Agriculture & fishing | 2021 |
| SLAM2 Solutions Ltd | Information & communication | 2017 |
| SM Deluxe Ltd. | Administrative & support | 2019 |
| Snicka Properties Ltd | Professional & scientific | 2026 |
| Snuggle Staffing Ltd | Administrative & support | 2024 |
| Soaring Eagle Karate CIC | Arts & recreation | 2022 |
| Sofa Guys Ltd | Wholesale & retail | 2025 |
| Solidore Limited | Information & communication | 2021 |
| Soreta's Tea Room Limited | Hospitality | 2025 |
| Southlands Grove (Management) Limited | Households | 2010 |
| Space Productiv Limited | Manufacturing | 1995 |
| Spacejoy Ltd | Wholesale & retail | 2024 |
| Specialist Sealing Products (West Yorkshire) Limited | Professional & scientific | 2011 |
| Spencer Motorhome Industries Limited | | 1981 |
| Sphider Ltd | Manufacturing | 2021 |
| SPK Commercial Services Limited | Construction | 2014 |
| Splitklick Limited | Wholesale & retail | 2003 |
| Spotscene Limited | Other services | 1973 |
| Sprayright Solutions Limited | Construction | 2021 |
| SSD Catering Ltd | Hospitality | 2021 |
| Ssmb Properties Ltd | Real estate | 2022 |
| ST Ives Cottages (Bingley) Management Limited | Households | 2018 |
| Stanley Lewis Associates Limited | Wholesale & retail | 2011 |
| Star Garage (Bingley) Ltd. | Wholesale & retail | 2007 |
| Star Ings York Street Limited | Hospitality | 2019 |
| Starkeys Management Services Limited | Administrative & support | 1978 |
| Staveley Court Management Limited | Households | 1984 |
| Stentiford and Associates Ltd | Health & social care | 2021 |
| Stentorgate Limited | Professional & scientific | 1989 |
| Sterling Service Centre Ltd | Wholesale & retail | 2008 |
| Stockbridge Wharf Management Company Limited | Households | 2018 |
| Storm Chemistry Limited | Information & communication | 2011 |
| Stott Building Contractors Limited | Construction | 2014 |
| Stott Homes Limited | Construction | 2022 |
| Strand Barbering Ltd | Other services | 2020 |
| Strand Colour Ltd | Other services | 2021 |
| Streamline Solar UK Limited | Construction | 2026 |
| Stri Consulting Limited | Professional & scientific | 2025 |
| Stri EOT Limited | Financial services | 2023 |
| Stri Holdings Limited | Financial services | 2019 |
| Stri Ltd. | Arts & recreation | 1996 |
| Stri Research Limited | Professional & scientific | 2025 |
| Stringflow Limited | Information & communication | 2006 |
| Strong Roots - Early Years Consultancy Ltd | Professional & scientific | 2022 |
| Stuart Clark (Bingley) Limited | Construction | 2003 |
| STY Lane Woodland Management Company Limited | Agriculture & fishing | 2008 |
| Supernova-Ecommerce Limited | Wholesale & retail | 2021 |
| Supplies 4 Care Limited | Administrative & support | 2020 |
| Supply Fuel Solutions Limited | Wholesale & retail | 2018 |
| Surprisingly Adequate Events Ltd | Arts & recreation | 2021 |
| Surprisingly Adequate Merch Limited | Wholesale & retail | 2026 |
| Sutton Property Holdings Ltd | Real estate | 2022 |
| SW Psychology Services Ltd | Health & social care | 2019 |
| Swan Wool Europe Limited | Wholesale & retail | 2009 |
| Swerve Energy Ventures Limited | Other services | 2014 |
| Symons Timber Ltd | Agriculture & fishing | 2022 |
| T & V Healthcare Solutions Ltd | Health & social care | 2017 |
| T Guest Limited | Health & social care | 2022 |
| T Jackson Roofing Ltd | Construction | 2024 |
| T&C Investments (Leeds) Limited | Real estate | 2020 |
| Taison Group Limited | Financial services | 2019 |
| Talent Educational Services Ltd | Education | 2025 |
| Tallinn Ltd | Administrative & support | 2021 |
| Tallulahs Bistro Ltd | Hospitality | 2026 |
| Tanner Investment Ltd | Real estate | 2018 |
| Taverna Trading Ltd | Hospitality | 2024 |
| Taylor Airey Group Limited | Financial services | 2020 |
| Tcmgt Ltd | Information & communication | 2016 |
| TDB Holdings Ltd | Financial services | 2020 |
| TDL Woodcraft Ltd | Construction | 2024 |
| Tdss Ltd | Information & communication | 2009 |
| Teale & Co Limited | Professional & scientific | 2015 |
| Teale Accountants Limited | Professional & scientific | 2023 |
| Team Taylor Ltd | Real estate | 2018 |
| Tech-Chem Ltd | Professional & scientific | 2026 |
| Technical & Paraplanning Services Ltd | Professional & scientific | 2018 |
| Technical Detection International Ltd | Administrative & support | 2025 |
| Technical Detection UK Ltd | Administrative & support | 2024 |
| THE Bingley Bar Company Ltd | Hospitality | 2013 |
| THE Bloom Atelier Ltd | Wholesale & retail | 2025 |
| THE College Gate (Windermere) Management Company Limited | Households | 1989 |
| THE Confident Movement Company Ltd | Arts & recreation | 2026 |
| THE Craven Family Trust | Arts & recreation | 2015 |
| THE Creative Nurture Network CIC | Education | 2025 |
| THE Dandy Arthouse Ltd | Professional & scientific | 2013 |
| THE Environmental Protection Group Limited | Professional & scientific | 1998 |
| THE Freedom of Spirit Trust for Border Collies | Education | 2007 |
| THE Fruition Team Limited | Information & communication | 2007 |
| THE GRC Centre Limited | Professional & scientific | 2023 |
| THE Green Deal Factory Ltd | Construction | 2010 |
| THE Health Perspective Ltd | Health & social care | 2025 |
| THE Ignite Club Limited | Wholesale & retail | 2024 |
| THE Import Centre Ltd | Wholesale & retail | 2025 |
| THE International Glassfibre Reinforced Concrete Association | Other services | 1978 |