| Samples of London Limited | Wholesale & retail | 2015 |
| Select Creative Production Ltd | Manufacturing | 2011 |
| Semedi Property Investments Limited | Real estate | 2017 |
| SEN Assess Plus Ltd | Education | 2018 |
| SEN Muchos Limited | Households | 2019 |
| Serhatcan Limited | Wholesale & retail | 2017 |
| Sevin & Company Limited | Financial services | 2013 |
| Shdavis Consulting Limited | Professional & scientific | 2016 |
| Shenandoah Consultancy Limited | Construction | 2021 |
| Sidar Duman Avanti UK Limited | Professional & scientific | 2019 |
| Siennageorgie Limited | Real estate | 2017 |
| SJP Direct Limited | Wholesale & retail | 2019 |
| Sketch Developments Ltd | Construction | 2021 |
| Sketch Group Ltd | Construction | 2018 |
| Sketch PS Group Ltd | Construction | 2023 |
| Sleapcross House Ltd | Health & social care | 2013 |
| Smart Invest Properties Ltd | Real estate | 2018 |
| Sofialex Investments Limited | Real estate | 2017 |
| Sofos Construction Ltd | Construction | 2018 |
| Sogut Holdings Limited | Financial services | 2019 |
| Sola Property Management Limited | Real estate | 2016 |
| Somerset Villa Residential Care Home Limited | Health & social care | 2003 |
| Southbank Plumbing & Heating Ltd | Construction | 2018 |
| Souvlaki Manos Ltd | Hospitality | 2025 |
| Spicy Taste Ltd | Hospitality | 2019 |
| Spinners Development Limited | Construction | 2022 |
| Sports Booker Global Ltd | Information & communication | 2018 |
| SRS Construction (London) Ltd | Construction | 2023 |
| SRS Construction Limited | Construction | 2010 |
| ST Professional Limited | Wholesale & retail | 2018 |
| Stalwart Real Estate Consultants Limited | Real estate | 2020 |
| Stamford Recruitment Ltd | Public administration | 2019 |
| Stavrou Investments Limited | Real estate | 1999 |
| Step One Preconstruction Ltd | Construction | 2023 |
| Stephanie Cleak Limited | Information & communication | 2016 |
| Studio Miltos Bottis Ltd | Professional & scientific | 2019 |
| Style Global Limited | Transport & logistics | 2019 |
| Stylers Hair VIP Limited | Other services | 2017 |
| Sun Metamorphosis Limited | Information & communication | 2003 |
| Swift Administration Limited | Professional & scientific | 2023 |
| Systemise to Scale Ltd | Administrative & support | 2024 |
| T & N Service Limited | Administrative & support | 2015 |
| T-Bone Burger Limited | Hospitality | 2018 |
| T. a. K Contractors Ltd | Construction | 2020 |
| T. PA Accountancy Services Limited | Professional & scientific | 2010 |
| T.A.K Property Investments Ltd | Real estate | 2026 |
| Tachbrook Ltd | Administrative & support | 2016 |
| TAY International Limited | Wholesale & retail | 2019 |
| Technosure Limited | Real estate | 2018 |
| THE Art of Boxing Limited | Other services | 2016 |
| THE Auckland Road Company Limited | Other services | 2013 |
| THE Barbican Dentist Limited | Health & social care | 2026 |
| THE Bluelemon Consultancy Limited | Professional & scientific | 2026 |
| THE Cosmic Energy Healing Ltd | Professional & scientific | 2013 |
| THE END Fund | Administrative & support | 2007 |
| THE Italian Good Food Company Limited | Hospitality | 2003 |
| THE JMH Partnership Limited | Professional & scientific | 2002 |
| THE Laundry Room (Lapal) Ltd | Other services | 2013 |
| THE Millimetric Advertising Agency Ltd | Professional & scientific | 2020 |
| THE Palmers Greenery | Hospitality | 2011 |
| THE River House Trust | Other services | 1996 |
| THE Stylers Stratford Limited | Other services | 2016 |
| THE Vine Leaf Souvlakia Limited | Hospitality | 2026 |
| Theomie Properties Ltd | Real estate | 2024 |
| Think and Grow Big Ltd | Information & communication | 2019 |
| Thomas James Properties Limited | Real estate | 2014 |
| TIM Construction Ltd | Construction | 2024 |
| Timeworks International Limited | Administrative & support | 2004 |
| Tinderbox Technologies Limited | Professional & scientific | 2019 |
| Titanium Gyms Ltd | Arts & recreation | 2008 |
| TK Alteration Ltd | Other services | 2017 |
| TM & E Properties Ltd | Real estate | 2021 |
| TMC Meat Limited | Wholesale & retail | 2013 |
| Toffee Design Limited | Professional & scientific | 2017 |
| Tomiya Ltd | Professional & scientific | 2026 |
| Topaz Cooling Limited | Other services | 2021 |
| Torque Dental Education Ltd | Health & social care | 2024 |
| Totally Teeth Limited | Health & social care | 2009 |
| Totti Restaurant Ltd | Hospitality | 2024 |
| Tozlukaya Investment Ltd | Real estate | 2020 |
| Trendy Foods Ltd | Wholesale & retail | 2011 |
| Triangle Car Sales Ltd. | Wholesale & retail | 2002 |
| Triumph Sourcing UK Limited | Other services | 2014 |
| Trojan Windows & Doors Limited | Construction | 2023 |
| TSC London Limited | Households | 2019 |
| Tsialos Incorporated Limited | Real estate | 2016 |
| Tuncan Limited | Real estate | 2005 |
| TVT Scaffolding Limited | Construction | 2022 |
| UK Field Sports Limited | Information & communication | 2015 |
| UK Hire Services Limited | Wholesale & retail | 2000 |
| Ulusakarya Limited | Professional & scientific | 2014 |
| Underdog BON Ltd | Hospitality | 2022 |
| Universal Cosmic Energy Limited | Health & social care | 2015 |
| Unlimited Blanco Ltd | Professional & scientific | 2010 |
| UNO Food Services Limited | Wholesale & retail | 2019 |
| Vakman Ltd | Administrative & support | 2021 |
| Valentinka Limited | Hospitality | 2015 |
| Valleyoftime Limited | Wholesale & retail | 2012 |
| Vampre & Co Limited | Professional & scientific | 2016 |
| Velora Autism Corner CIC | Administrative & support | 2018 |