| Steer Smart Academy Ltd | Education | 2024 |
| Steerides Ltd | Other services | 2011 |
| Steering Hand Limited | Construction | 2008 |
| Steetley Corner Group Limited | Professional & scientific | 2017 |
| Stefan Ifrim Courier Limited | Transport & logistics | 2025 |
| Stefy Trading Ltd | Construction | 2024 |
| Stein Time Management Limited | Hospitality | 2021 |
| Steinhaus Harrogate Limited | Hospitality | 2026 |
| Stele Plant Ltd | Administrative & support | 2020 |
| Stele Structures Ltd | Construction | 2014 |
| Stella South 2002 Limited | Construction | 2002 |
| Stellar Investment Group Limited | Financial services | 2025 |
| Stellar Lane Trading Limited | Wholesale & retail | 2025 |
| Stellar Pulse Solutions Limited | Information & communication | 2025 |
| Stellatow Limited | Wholesale & retail | 2025 |
| Stem Cellx Limited | Wholesale & retail | 2016 |
| Stemar Performance Ltd | Arts & recreation | 2022 |
| Stemfluent Limited | Wholesale & retail | 2023 |
| Step Business Enterprises Limited | Hospitality | 2004 |
| Step Development Trust | Professional & scientific | 1997 |
| Step Educational Psychology Ltd | Education | 2023 |
| Step in Computers Limited | Wholesale & retail | 2014 |
| Step in Electronics Limited | Wholesale & retail | 2020 |
| Step in Global Limited | Wholesale & retail | 2025 |
| Step in Pharma Ltd | Wholesale & retail | 2025 |
| Step in Realty Ltd | Real estate | 2023 |
| Step Telecoms UK Limited | Information & communication | 2017 |
| Step-Up Support Limited | Health & social care | 2012 |
| STEP2FREEDOM Mobility Limited | Wholesale & retail | 2026 |
| Steph Fillis Online Coaching Ltd | Education | 2022 |
| Stephen Bywater Hair Ltd | Other services | 2011 |
| Stephen Harrison Academy Limited | Education | 2007 |
| Stephen Hill Architects Limited | Professional & scientific | 2012 |
| Stephen Kenwright Limited | Professional & scientific | 2025 |
| Stephen Picksley Training Ltd | Education | 2017 |
| Stephen Slater Ltd | Information & communication | 2016 |
| Stephens Real Estate Ltd | Real estate | 2019 |
| Stephenson & Blake Limited | Professional & scientific | 2004 |
| Stephenson Psychology Services Ltd | Health & social care | 2026 |
| Stepping Stones Financial Services Limited | Administrative & support | 2006 |
| Steps Community Nursery (High Green) | Education | 2001 |
| Steps Inclusive Design Limited | Professional & scientific | 2025 |
| Steps Land Limited | Construction | 2020 |
| Steps Physiotherapy Limited | Health & social care | 2020 |
| Steps Prosthetics Ltd | Health & social care | 2022 |
| Steps Rehabilitation Limited | Health & social care | 2012 |
| Stepscale Limited | Real estate | 1990 |
| Stereoptico Ltd | Information & communication | 2019 |
| Sterick Limited | Wholesale & retail | 2025 |
| Sterl Properties Ltd | Real estate | 2026 |
| Sterling Electrical Engineers Limited | Construction | 2023 |
| Sterling Law LLP | | 2014 |
| Sterling Run Limited | Other services | 2024 |
| Sterling Security Products Limited | Extraterritorial | 2017 |
| Steve Ambler Music Limited | Arts & recreation | 2013 |
| Steve Budd Engineering Ltd | Professional & scientific | 2017 |
| Steve CHU Consulting Ltd | Professional & scientific | 2024 |
| Steve Cooper Site Services Limited | Administrative & support | 2016 |
| Steve Delaney Ltd | Health & social care | 2024 |
| Steve Ebsworth Limited | Financial services | 2017 |
| Steve Ellis Boat Builders Ltd | Manufacturing | 2018 |
| Steve Faulkner Carpets Limited | Wholesale & retail | 2003 |
| Steve Faulkner Ltd | Professional & scientific | 2010 |
| Steve IT Recycling Limited | Wholesale & retail | 2026 |
| Steve Mackey Limited | Information & communication | 2018 |
| Steve Mackey Publishing Limited | Information & communication | 2017 |
| Steve Munro Coaching Ltd | Arts & recreation | 2023 |
| Steve Munro PT Ltd | Education | 2022 |
| Steve Peat Racing Ltd | Arts & recreation | 2003 |
| Steve Pinson Properties Limited | Real estate | 2024 |
| Steve Pope Properties Limited | Real estate | 2010 |
| Steve Quin Limited | Administrative & support | 2012 |
| Steve Roberts Golf Ltd | Wholesale & retail | 2014 |
| Steve Robinson Property Services Ltd | Financial services | 2020 |
| Steve Saunders I.F.A. Limited | Financial services | 2006 |
| Steve Topham Urban Development Ltd | Professional & scientific | 2018 |
| Steve Unwin Wealth Management Ltd | Professional & scientific | 2023 |
| Steve Walsh Transport Ltd | Transport & logistics | 2017 |
| Steve WAN Hair Ltd | Other services | 2022 |
| STEVEF71 Rail Services Limited | Construction | 2016 |
| Steven Bayliss Technical Support Limited | Professional & scientific | 2026 |
| Steven NED Ltd | Professional & scientific | 2018 |
| Steven Proctor Consultancy Limited | Financial services | 2020 |
| Steven Surgeon Limited | Financial services | 2022 |
| Stevens Property Consulting Ltd | Real estate | 2020 |
| Stevie at the Peacock Limited | Hospitality | 2014 |
| Steward Property Investments Limited | Construction | 2026 |
| Stewart House Clinical Reporting Limited | Health & social care | 2014 |
| Stewart House CN Reports Limited | Health & social care | 2014 |
| Stewart House Group Limited | Financial services | 2019 |
| Stewart House Holdings Limited | Professional & scientific | 2013 |
| Stewart House MN Reports Limited | Health & social care | 2022 |
| Stewart House Negligence Reporting Limited | Health & social care | 2014 |
| Stewart House Trustees Limited | Administrative & support | 2022 |
| Stewart Inspection Ltd | Professional & scientific | 2004 |
| Stewarts Electrical Contractors Ltd | Construction | 2024 |
| Sthazm Limited | Health & social care | 2015 |
| Stick IT Transport Ltd | Transport & logistics | 2024 |
| Sticker Stop Ltd | Manufacturing | 2021 |
| Sticky Rice Thai Supermarket Ltd | Wholesale & retail | 2020 |