| Storm Ryder Limited | Wholesale & retail | 2022 |
| Storm Trading Group Limited | Wholesale & retail | 2007 |
| Storm Upvc Windows & Doors Limited | Construction | 2019 |
| Storm's RAW Emporium Ltd | Wholesale & retail | 2019 |
| Story Film & Photography Limited | Professional & scientific | 2019 |
| Story Holdings Limited | Financial services | 2024 |
| Storybox Entertainment Ltd | Arts & recreation | 2022 |
| Storytec Ltd | Information & communication | 2017 |
| Stove Medic Ltd | Construction | 2014 |
| STQ Enterprises Limited | Health & social care | 2008 |
| Strada Automobile Limited | Wholesale & retail | 2025 |
| Straight Path Consulting Ltd | Information & communication | 2019 |
| Strand 75 Ltd | Hospitality | 2024 |
| Strangeway Properties Limited | Real estate | 2018 |
| Strategex Management Consultants Ltd | Professional & scientific | 2025 |
| Strategic Packaging Consultancy Limited | Professional & scientific | 2024 |
| Strategic Solutions Ltd | Professional & scientific | 2024 |
| Stratford Mini Mart Ltd | Wholesale & retail | 2022 |
| Stratten Property Group Limited | Construction | 2025 |
| Stratton Clyde Limited | Professional & scientific | 2020 |
| Stratton Dynamics Limited | Manufacturing | 2008 |
| Stratton Energy Ltd | Construction | 2025 |
| Stratton Innovations Limited | Agriculture & fishing | 2020 |
| Strawberry Moon Ltd | Wholesale & retail | 2024 |
| Strawberry Trading Ltd | Information & communication | 2014 |
| STREAM23 Ltd | Information & communication | 2022 |
| Streamline Fitness Limited | Health & social care | 2002 |
| Streamline LUX Ltd | Transport & logistics | 2019 |
| Strebor Group Ltd | Financial services | 2019 |
| Strebor Signs Limited | Manufacturing | 2023 |
| Street Carz Ltd | Administrative & support | 2025 |
| Street Eats Food Limited | Manufacturing | 2011 |
| Street Fries Limited | Hospitality | 2024 |
| Street Lane Properties Limited | Real estate | 1998 |
| Street Loom Ltd | Wholesale & retail | 2026 |
| Street Savvy Ltd | Transport & logistics | 2024 |
| Street Soccer Limited | Administrative & support | 2018 |
| Streetwise Marketing Limited | Professional & scientific | 2025 |
| Strength Pro Wellness Limited | Health & social care | 2026 |
| Strike Fitness Beckside Ltd | Arts & recreation | 2026 |
| Strike Fitness Bradford Ltd | Arts & recreation | 2025 |
| Strike Fitness Ltd | Arts & recreation | 2024 |
| Strike+ Limited | Wholesale & retail | 2025 |
| Strikekings CIC | Education | 2026 |
| Striver Contracts Ltd | Construction | 2012 |
| Striving Care Ltd | Other services | 2019 |
| Stroma Folk & Ceilidh Ltd | Arts & recreation | 2025 |
| Strong Mums Ltd | Arts & recreation | 2024 |
| Structure Build Ltd | Construction | 2021 |
| Structureclad (North) Ltd | Construction | 2019 |
| Struthers & Carter Limited | Wholesale & retail | 1939 |
| STS Metal Recycling Limited | Water & waste | 2013 |
| STS Plumbing & Building Services Limited | Construction | 2021 |
| Stuart Pyne Limited | Construction | 2008 |
| Stuarts Gardening Services Limited | Administrative & support | 2022 |
| Student Homestay Ltd | Hospitality | 2023 |
| Student Live Ltd | Wholesale & retail | 2025 |
| Student Moves Group Limited | Wholesale & retail | 2025 |
| Student Private Hire Ltd | Transport & logistics | 2025 |
| Student Success Limited | Administrative & support | 2024 |
| Students Biryani Limited | Hospitality | 2023 |
| Studio 22 Design Limited | Information & communication | 2004 |
| Studio Twelve Limited | Wholesale & retail | 2013 |
| Study Links International Limited | Administrative & support | 2008 |
| Stumble 1NNS Limited | Hospitality | 2016 |
| Stunningholidays Limited | Administrative & support | 2020 |
| Stuuk Ltd | Education | 2012 |
| Stva Services Ltd | Administrative & support | 2024 |
| Style and Vision Limited | Health & social care | 2010 |
| Style Bitz Ltd | Wholesale & retail | 2023 |
| Style Cuts BFD Ltd | Other services | 2025 |
| Style My Group Ltd | Wholesale & retail | 2016 |
| Style Sensation Ltd | Wholesale & retail | 2024 |
| Styled by YOU Limited | Wholesale & retail | 2026 |
| Styleline Blinds Limited | Extraterritorial | 2007 |
| Stylite Limited | Manufacturing | 2023 |
| Stylo Glazing Ltd | Construction | 2023 |
| Styrene Packaging & Insulation (Holdings) Limited | Financial services | 2019 |
| Styrene Packaging & Insulation Limited | Manufacturing | 1984 |
| STZ Motors Ltd | Wholesale & retail | 2020 |
| Stãll Utilities Ltd | Energy | 2024 |
| SU Getaway Tours Limited | Administrative & support | 2025 |
| Suaa Limited | Health & social care | 2013 |
| Suave Leather Ltd | Wholesale & retail | 2026 |
| Suave OWL Ltd | Wholesale & retail | 2017 |
| Subblec Limited | Construction | 2025 |
| Subha Akhtar Ltd | Health & social care | 2021 |
| Subhaan's Collections Ltd | Wholesale & retail | 2018 |
| Subhaans Ltd | Wholesale & retail | 2024 |
| Subhan Traders Limited | Hospitality | 2013 |
| Subhan's E Commerce Ltd | Wholesale & retail | 2025 |
| Subhann Services Limited | Manufacturing | 2022 |
| Subina Shams Ltd | Health & social care | 2021 |
| Sublime Furnishings Limited | Administrative & support | 2009 |
| Subneck Limited | Wholesale & retail | 2023 |
| Suboctave Limited | Information & communication | 2015 |
| Subr Ltd | Information & communication | 2026 |
| Suby and Sufy Brothers Ltd | Wholesale & retail | 2019 |
| Subz Consultancy Ltd | Professional & scientific | 2015 |
| Subzeroheating Ltd | Construction | 2025 |