| S.A Link Group Ltd. | Real estate | 2023 |
| S.A. Soccer Ltd | Arts & recreation | 2014 |
| S.A.M Heating Ltd | Construction | 2017 |
| S.A.N Enterprises Ltd. | Administrative & support | 2015 |
| S.A.N.E.A Limited | Professional & scientific | 2014 |
| S.A.S. Subsea Services Limited | Professional & scientific | 2013 |
| S.Ahmed's Holdings Ltd | Real estate | 2021 |
| S.B. Illingworth Stores Limited | Wholesale & retail | 2015 |
| S.B.Maintainence Limited | Extraterritorial | 2022 |
| S.C.R.A. Management Limited | Households | 1999 |
| S.Cs Removals (Leeds) Ltd | Transport & logistics | 2025 |
| S.D. Optics Limited | Health & social care | 2019 |
| S.Dacombe Content Creation Ltd | Arts & recreation | 2023 |
| S.Daniels Limited | Professional & scientific | 1944 |
| S.E. Mellor Limited | Real estate | 2007 |
| S.E.A. Carr Ltd | Professional & scientific | 2019 |
| S.E.Broscombe,Limited | Transport & logistics | 1945 |
| S.E.G. Leeds Ltd | Wholesale & retail | 2019 |
| S.E.S Project Managerial Services Ltd | Real estate | 2025 |
| S.Electrix Ltd | Construction | 2015 |
| S.H Auto Detailing Limited | Wholesale & retail | 2024 |
| S.H. Locums Ltd | Health & social care | 2005 |
| S.H. Structures Limited | Manufacturing | 1992 |
| S.H.Yik & Co. Limited | Professional & scientific | 2008 |
| S.Joon Ltd | Manufacturing | 2016 |
| S.K.Y Constructors Ltd | Construction | 2020 |
| S.L Sign Installation Ltd | Construction | 2021 |
| S.L. Video Ltd | Other services | 1998 |
| S.Lyles, Sons, & Co., Limited | Manufacturing | 1912 |
| S.M.A.R.T Repair Holdings Limited | Financial services | 2019 |
| S.M.P. Roofing Supplies Ltd | Wholesale & retail | 2002 |
| S.N.R Building Contractors Ltd | Construction | 2018 |
| S.P Contractors Limited | Construction | 2012 |
| S.P. Joinery (Leeds) Limited | Construction | 2000 |
| S.T. Enterprises LLP | | 2013 |
| S.Taylor Consultancy Ltd | Health & social care | 2025 |
| S.Z Infinity Care Limited | Health & social care | 2019 |
| S18 Consulting Ltd | Information & communication | 2009 |
| S2 Accountancy Limited | Professional & scientific | 2023 |
| S2 Advisory Limited | Professional & scientific | 2023 |
| S2 Group Ltd | Administrative & support | 2016 |
| S20 Sparkle Ltd | Administrative & support | 2018 |
| S24 Social Care Ltd | Administrative & support | 2023 |
| S2S Academia Ltd | Education | 2013 |
| S2S Software Solutions Ltd | Information & communication | 2013 |
| S33KAM Ltd | Administrative & support | 2025 |
| S3X Holdings Ltd | Hospitality | 2025 |
| S7EEL on the Bar Ltd | Arts & recreation | 2019 |
| S9 Commercials Limited | Real estate | 2022 |
| S9 Communications Limited | Information & communication | 2021 |
| S9 Construction Limited | Construction | 2017 |
| S9 Developments Limited | Construction | 2021 |
| S9 Holdings Limited | Professional & scientific | 2018 |
| S9 Homes Limited | Real estate | 2017 |
| S9 Leisure Ltd | Arts & recreation | 2023 |
| S9 Living Limited | Real estate | 2018 |
| S9 Systems Limited | Construction | 2018 |
| S9 Technology Limited | Information & communication | 2018 |
| S9 Traffic Management Solutions Limited | Transport & logistics | 2024 |
| SA & S Super Store Ltd | Wholesale & retail | 2026 |
| SA & SA Limited | Real estate | 2021 |
| SA 1 Developments LLP | | 2004 |
| SA Bright Properties Ltd | Real estate | 2020 |
| SA Capital Investments Ltd | Real estate | 2025 |
| SA Eyelet Ltd | Health & social care | 2023 |
| SA Leeds Consultancy Ltd | Professional & scientific | 2026 |
| SA Letz Ltd | Real estate | 2020 |
| SA Procurement Group Ltd | Real estate | 2025 |
| SA Properties Leeds Limited | Real estate | 2021 |
| Sa&Jc Trading Ltd | Wholesale & retail | 2024 |
| SA2 Limited | Health & social care | 2010 |
| SA2 Properties Ltd | Real estate | 2016 |
| SAA Official Ltd | Wholesale & retail | 2023 |
| SAA Professional Services Ltd | Professional & scientific | 2018 |
| SAA Yorkshire Limited | Real estate | 2023 |
| Saab Property Holdings Ltd | Real estate | 2023 |
| Saadi ZIA Traders Ltd | Wholesale & retail | 2022 |
| Saaf Conusltants Limited | Professional & scientific | 2020 |
| Saafa Capital Ltd | Real estate | 2019 |
| Saal Medical Services Ltd | Real estate | 2016 |
| Saam Consultancy Services UK Limited | Professional & scientific | 2025 |
| Saamaz Medics Ltd | Health & social care | 2025 |
| Saarani Holdings Ltd | Hospitality | 2025 |
| Saaruns Retail Ltd | Wholesale & retail | 2019 |
| Saas Medics Ltd | Health & social care | 2019 |
| Saassi Limited | Professional & scientific | 2023 |
| Saat Elite Service Ltd | Transport & logistics | 2017 |
| SAB Contracts Ltd | Information & communication | 2024 |
| Saba Estates Ltd | Real estate | 2024 |
| Sabah Barber Ltd | Other services | 2026 |
| Sabbath Child Media Ltd | Information & communication | 2024 |
| Sabeen Ashraf Ltd | Wholesale & retail | 2024 |
| Saber Diamond Products Limited | Wholesale & retail | 1995 |
| Sabi Healthcare Limited | Health & social care | 2013 |
| Sabin Care Ltd | Health & social care | 2021 |
| Sabinafcca Limited | Information & communication | 2025 |
| Sabir Properties Ltd | Real estate | 2024 |
| Sablaydab Ventures Limited | Real estate | 2025 |
| Sable Radio CIC | Education | 2020 |
| Sable-Social Beauty Ltd | Other services | 2022 |