| Surestay Living Ltd | Real estate | 2025 |
| Sustainabl Limited | Information & communication | 2021 |
| Sustainable Energy Solutions Ltd | Administrative & support | 2014 |
| Sustainable Energy Supplies Ltd | Administrative & support | 2013 |
| Sustainable Financial Planning Ltd | Financial services | 2020 |
| Sustainable Living Ltd | Administrative & support | 2012 |
| Sustainable Student Living Ltd | Administrative & support | 2012 |
| Suzannah Jameson Limited | Professional & scientific | 2025 |
| SW Coaching & Fitness Ltd | Education | 2024 |
| Swagency Ltd | Administrative & support | 2019 |
| Swaley Corporation Ltd | Extraterritorial | 2024 |
| Swanshot Ltd | Arts & recreation | 2024 |
| Swansmere Management Company Limited | Real estate | 2023 |
| Swcyberconsulting Ltd | Information & communication | 2025 |
| Sweedishgee Ltd | Other services | 2018 |
| Sweet Retreatz Ltd | Hospitality | 2025 |
| Sweet Treatz Limited | Hospitality | 2025 |
| Sweetheart Investments Limited | Real estate | 2023 |
| Swimtime CP Limited | Education | 2015 |
| Swise Property Services Ltd | Real estate | 2024 |
| Sycamore SK Ltd | Real estate | 2024 |
| Syed Quality Consultants PVT. Ltd. | Professional & scientific | 2014 |
| Syefsia Ltd | Information & communication | 2024 |
| Syefsia SP Ltd | Information & communication | 2024 |
| Syefsiaig Ltd | Information & communication | 2024 |
| SYF Realty Ltd | Real estate | 2025 |
| Sylk Systems Group Limited | Financial services | 2022 |
| Sylvan Financial Management Ltd | Financial services | 2020 |
| Symbio Imaging Limited | Health & social care | 2022 |
| Symora Ltd | Real estate | 2024 |
| Symposium Design Limited | Arts & recreation | 2015 |
| Synchron UK Limited | Wholesale & retail | 2004 |
| Synergy Estimates Ltd | Professional & scientific | 2021 |
| Synergy Medical Reports Limited | Administrative & support | 2011 |
| Synergy PAY Limited | Administrative & support | 2024 |
| Synexio Consulting Ltd | Professional & scientific | 2023 |
| Syntechs Solutions Ltd | Information & communication | 2024 |
| Sypharm Ltd | Wholesale & retail | 2024 |
| Syra Real Estate Ltd | Real estate | 2018 |
| Syscovery Limited | Wholesale & retail | 2016 |
| System Antics Limited | Information & communication | 2026 |
| Systemsai Ltd | Professional & scientific | 2025 |
| Szarics Electrical Contractors Limited | Construction | 2025 |
| T & C Development Limited | Construction | 2023 |
| T & N Air Conditioning Limited | Manufacturing | 2016 |
| T D Owens Consultancy Ltd | Other services | 2017 |
| T K Bookkeeping Limited | Professional & scientific | 2018 |
| T&L Construction Ltd | Construction | 2016 |
| T-Paid Consulting Ltd | Information & communication | 2023 |
| T.A.S Investment Group Ltd | Real estate | 2021 |
| T.Halvorsen Ltd | Information & communication | 2025 |
| T100 Property Group Ltd | Real estate | 2026 |
| T2 Investco Limited | Real estate | 2025 |
| T2 Planning Services Ltd | Professional & scientific | 2021 |
| T20 Investments Ltd | Other services | 2018 |
| T8 Partnerships Limited | Professional & scientific | 2020 |
| TA Clinical Services Limited | Wholesale & retail | 2025 |
| Tabat Limited | Information & communication | 1995 |
| TAE Homes Limited | Construction | 2022 |
| TAE Property Consultants Ltd | Professional & scientific | 2022 |
| Taff Accounts Ltd | Professional & scientific | 2024 |
| TAG Clinical Ltd | Administrative & support | 2018 |
| TAG Project Services Limited | Professional & scientific | 2023 |
| TAG Rail Ltd | Construction | 2020 |
| Taha Tailors Ltd | Administrative & support | 2024 |
| Tajer Ltd | Wholesale & retail | 2024 |
| Take Time Jewellers Ltd | Wholesale & retail | 2026 |
| Takhayul Builders Ltd | Real estate | 2020 |
| Tall Trees Management Company Limited | Administrative & support | 2016 |
| Talon Trading Limited | Wholesale & retail | 2022 |
| Tameside Orthodontics Limited | Health & social care | 2010 |
| Tamya Cafe Limited | Hospitality | 2023 |
| TAN.365 Limited | Wholesale & retail | 2003 |
| Tangelo Digital Ltd | Information & communication | 2024 |
| Tank Wholesale Ltd | Real estate | 2019 |
| Tanner & Myers Ltd | Hospitality | 2025 |
| Tapeo Ltd | Hospitality | 2016 |
| Tapzia Limited | Administrative & support | 2014 |
| Tar-Ha Ltd | Wholesale & retail | 2025 |
| Target Software Limited | Information & communication | 1987 |
| Tarimo Advisory Services Holdings Ltd | Financial services | 2020 |
| Tarimo Advisory Services Ltd | Professional & scientific | 2020 |
| Tasab Healthcare Ltd | Wholesale & retail | 2023 |
| Tasty Properties Limited | Real estate | 2015 |
| Tatton Park Life Limited | Construction | 2026 |
| TAU Ventures Ltd | Professional & scientific | 2024 |
| Taveeza Boutique Limited | Extraterritorial | 2024 |
| Tax Advice Limited | Professional & scientific | 2015 |
| Tax Guide Limited | Professional & scientific | 2015 |
| Tax-Sol Accountancy Services Ltd | Professional & scientific | 2024 |
| Taxcraft Consultancy Ltd | Professional & scientific | 2026 |
| Taxprime Accounting Ltd | Professional & scientific | 2025 |
| Taylored Designs Limited | Wholesale & retail | 1998 |
| Taylored Flooring Limited | Extraterritorial | 2006 |
| TB FIC Ltd | Financial services | 2024 |
| TB Property Developments Limited | Construction | 2021 |
| TBB Hair Ltd | Wholesale & retail | 2023 |
| TBR Lomas Ltd | Transport & logistics | 2019 |
| TC Auto Accessories Ltd | Wholesale & retail | 2023 |
| TCB Property Management Limited | Real estate | 2024 |