| Stourbridge Care Home Holdings Limited | Financial services | 2019 |
| Stourbridge Care Home Limited | Construction | 2016 |
| Stourbridge Care Limited | Health & social care | 2019 |
| Stourbridge Land Limited | Construction | 2020 |
| STR8 Tech Limited | Information & communication | 2024 |
| Strategic Partners for Asia Limited | Extraterritorial | 2009 |
| Strategically Digital Marketing Ltd | Other services | 2019 |
| Strategix Consultants Ltd | Professional & scientific | 2024 |
| Streama Ltd | Wholesale & retail | 2026 |
| STS Properties Egham Ltd | Real estate | 2024 |
| Stuart's Plumbing Limited | Construction | 2012 |
| Student Safeguarding Ltd | Information & communication | 2019 |
| Studio 10 Architects Limited | Construction | 2021 |
| Studio GLU Ltd | Professional & scientific | 2019 |
| Subrt Ltd | Professional & scientific | 2016 |
| Success Properties Ltd | Real estate | 2018 |
| Sudipal Ltd | Professional & scientific | 2010 |
| Sulima Energy Limited | Wholesale & retail | 2010 |
| Summit Facilities & Maintenance Ltd | Construction | 2023 |
| Sunbeams Atherton Ltd | Education | 2012 |
| Sunburst Holdings Limited | Wholesale & retail | 2024 |
| Sunbury Foods Limited | Hospitality | 2020 |
| Sundarbans Properties Ltd | Hospitality | 2022 |
| Sunnytopia Limited | Wholesale & retail | 2024 |
| Sunseal Shutters & Blinds Ltd | Professional & scientific | 2025 |
| Sunshine for Children | Other services | 2023 |
| Sunshine Tours 2000 Ltd | Administrative & support | 2023 |
| Superlearningseries Limited | Information & communication | 2016 |
| Support for Peace and Development Ltd | Other services | 2022 |
| Supreme Threads Ltd | Wholesale & retail | 2025 |
| Surgery Display Services Ltd | Information & communication | 2014 |
| Suri Legacy Ltd | Real estate | 2026 |
| Surrey & Berkshire Landscaping Ltd | Administrative & support | 2021 |
| Surrey Auto Group Limited | Other services | 2015 |
| Surrey Bookkeeping and Payroll Services Limited | Professional & scientific | 2015 |
| Surrey Carpentry & Fencing Ltd | Construction | 2025 |
| Surrey Electrical Ltd | Construction | 2024 |
| Surrey Gaming Ltd | Administrative & support | 2023 |
| Surrey Osteopathy and Wellness Ltd | Other services | 2021 |
| Surrey Security Systems Limited | Administrative & support | 2013 |
| Surrey Vehicles Limited | Financial services | 2016 |
| Suska Homes Ltd | Real estate | 2024 |
| Sutton Coldfield Care Home Holdings Limited | Financial services | 2019 |
| Sutton Coldfield Care Home Limited | Health & social care | 2018 |
| Sutton Coldfield Care Limited | Health & social care | 2018 |
| SUV Marketing Limited | Professional & scientific | 2023 |
| Svatas Limited | Wholesale & retail | 2021 |
| Svea Properties Ltd | Real estate | 2024 |
| Svensson Property Ltd | Real estate | 2023 |
| Swal Ltd | Information & communication | 2013 |
| Swift Employment Solutions Limited | Professional & scientific | 2018 |
| Swift Paper Limited | Wholesale & retail | 2026 |
| Swift Peak Holdings Limited | Construction | 2024 |
| Sybaris Funding Ltd | Financial services | 2015 |
| Sybaris Investments Ltd | Financial services | 2012 |
| Sybaris Special Risks Ltd | Financial services | 2012 |
| Sybrin UK Limited | Information & communication | 2019 |
| Symons and SON Electrical Limited | Energy | 2013 |
| Symquilo Living Ltd | Real estate | 2021 |
| Symquilo Properties Ltd | Real estate | 2021 |
| Synergia Property Holdings Ltd | Real estate | 2021 |
| Synergia Property Solutions Ltd | Hospitality | 2021 |
| Synergy Physio and Rehab Ltd. | Health & social care | 2009 |
| Synergy Physio Group Limited | Health & social care | 2023 |
| Synergy Physio Walton Ltd. | Health & social care | 2014 |
| Synomila Ltd | Information & communication | 2026 |
| System D Limited | Administrative & support | 2016 |
| System Providers Limited | Construction | 2024 |
| Systemizer Ltd | Information & communication | 2017 |
| Systems Backup Limited | Extraterritorial | 1995 |
| T & R German Investments Ltd | Professional & scientific | 2025 |
| T&Ja Wood Ltd | Transport & logistics | 2023 |
| T&S Fruit Ltd | Wholesale & retail | 2017 |
| T.E.Electrical Limited | Construction | 2007 |
| Taifas UK Ltd | Transport & logistics | 2023 |
| Talaria Pictures Ltd | Information & communication | 2021 |
| Talent Assessment Holdings Ltd. | Financial services | 2017 |
| Tallman ICT Ltd | Information & communication | 2016 |
| Talluk Ltd | Real estate | 2025 |
| Talmine Contracts Ltd | Administrative & support | 2022 |
| TAM Technology Solutions Ltd | Information & communication | 2024 |
| Tantalus Leisure Limited | Administrative & support | 2012 |
| Tarbet Ltd | Administrative & support | 2021 |
| Tarus Laboratories Limited | Wholesale & retail | 2011 |
| Tasis England Limited | Education | 1998 |
| Taste Creative Ltd | Hospitality | 2018 |
| Tatla Technologies Ltd | Information & communication | 2003 |
| Taunton Care Home Limited | Health & social care | 2024 |
| Taunton EYE Doctors Limited | Health & social care | 2021 |
| Taylor Motor Trade Ltd | Wholesale & retail | 2026 |
| Taylor’S Plant Limited | Manufacturing | 2019 |
| TBE (Southern) Limited | Real estate | 1983 |
| TCL Real Estate Ltd | Real estate | 2022 |
| TEA2YOU LLP | | 2009 |
| TEA2YOU Tea Limited | Wholesale & retail | 2025 |
| Teallgreen Ltd | Real estate | 2022 |
| Team Butterfly Properties Ltd | Real estate | 2025 |
| Teamstar Systems Ltd | Information & communication | 1997 |
| Techadvise IT Consulting Ltd | Information & communication | 2024 |
| Technical Environmental Cleaning Services Limited | Administrative & support | 2002 |