| Snaproot Ltd | Wholesale & retail | 2025 |
| Snzk Technologies Ltd | Wholesale & retail | 2024 |
| SO Law Limited | Professional & scientific | 2014 |
| Solverahome Ltd | Wholesale & retail | 2025 |
| Sophistic Limited | Wholesale & retail | 2025 |
| Soraft Ltd | Wholesale & retail | 2024 |
| Southside Waterjet Limited | Manufacturing | 2012 |
| Spark UP Vision Ltd | Wholesale & retail | 2025 |
| Sparking Hunt Ltd | Wholesale & retail | 2025 |
| Spectrum College International Limited | Education | 2024 |
| Spoke Shed Ltd | Extraterritorial | 2022 |
| Spontana Ltd | Wholesale & retail | 2025 |
| Spot Services Ltd | Other services | 2023 |
| Square Well Ltd | Wholesale & retail | 2025 |
| ST. Albans Management Co. Limited | Households | 1971 |
| Starlight Nails London Limited | Other services | 2020 |
| Starving Wolf Limited | Wholesale & retail | 2025 |
| Stealth Sports Limited | Wholesale & retail | 2021 |
| Step 2 Agility Ltd | Information & communication | 2023 |
| Step Right Flooring Limited | Construction | 2025 |
| Step-In Properties Ltd | Real estate | 2017 |
| Sterling Consultancy Ltd | Information & communication | 2026 |
| Streamerz Ltd | Information & communication | 2022 |
| Striker Sports Ltd | Wholesale & retail | 2024 |
| Strivex Solutions Ltd | Other services | 2025 |
| Studio DJM Ltd | Information & communication | 2025 |
| Style Edit Hair Ltd | Wholesale & retail | 2026 |
| Subzoner Ltd | Wholesale & retail | 2025 |
| Sugar X Tarot Ltd | Wholesale & retail | 2022 |
| Sugarrush Cafe Ltd | Hospitality | 2023 |
| Sumptuous Desserts Ltd | Wholesale & retail | 2025 |
| Sunshine Galaxy Ltd | Professional & scientific | 2026 |
| Sunura Limited | Wholesale & retail | 2024 |
| Supernovax Ltd | Wholesale & retail | 2025 |
| Superwear Menswear Limited | Wholesale & retail | 2015 |
| SUR Themarket Ltd | Wholesale & retail | 2021 |
| Sureset Consulting Limited | Information & communication | 2017 |
| Susnen Healthy Limited | Wholesale & retail | 2024 |
| Susney Ltd | Wholesale & retail | 2023 |
| Swahili House Ltd | Information & communication | 2019 |
| Swasi Estates Limited | Construction | 2025 |
| Swecmed Limited | Wholesale & retail | 2025 |
| Sweetytreatyco Ltd | Wholesale & retail | 2025 |
| Swiftmoov Logistics Ltd | Transport & logistics | 2024 |
| SYM Ecommerce Ltd | Wholesale & retail | 2025 |
| Symbiosis Assistance Limited | Professional & scientific | 2026 |
| Syncobus Limited | Information & communication | 2025 |
| Syntrofia Limited | Education | 2020 |
| T & a (London) Ltd | Construction | 2021 |
| T Varnalis Dri-Wall Limited | Construction | 2018 |
| T.G.S. Services Limited | Construction | 2016 |
| Takhleeqat Enterprises PTE Ltd | Information & communication | 2020 |
| Tanner Miller Ltd | Wholesale & retail | 2024 |
| Taskqueue Ltd | Information & communication | 2025 |
| TBB Property Investments Limited | Real estate | 2019 |
| Tclc Consulting Limited | Professional & scientific | 2025 |
| Tech Fixon Limited | Information & communication | 2024 |
| Techflowinnovations Ltd | Wholesale & retail | 2025 |
| Technigator Ltd | Information & communication | 2026 |
| Techyom Limited | Wholesale & retail | 2024 |
| Tenbloc Ltd | Wholesale & retail | 2021 |
| TFA UP Ltd | Wholesale & retail | 2024 |
| THE Angela Convergence Platform Ltd | Professional & scientific | 2025 |
| THE Daddy Behavioural Improvements Limited | Health & social care | 2012 |
| THE Elite Prints Ltd | Wholesale & retail | 2025 |
| THE Gladden Marketing Limited | Wholesale & retail | 2024 |
| THE Roar Forge Ltd | Wholesale & retail | 2025 |
| THE Seagreen Traders Limited | Wholesale & retail | 2026 |
| THE Sparkz Founder Ltd | Wholesale & retail | 2025 |
| Theartrel Ltd | Wholesale & retail | 2024 |
| Therapy Forms Ltd | Information & communication | 2024 |
| Think Twist Solutions Limited | Education | 2025 |
| Thomas Bradshaw Commercial Ltd | Construction | 2022 |
| Tiana's Decor Limited | Wholesale & retail | 2022 |
| Tickets N Deals Ltd | Administrative & support | 2025 |
| Tigers Marketing Ltd | Administrative & support | 2025 |
| Titano Electrical Limited | Construction | 2015 |
| TJ Mart Ltd | Wholesale & retail | 2025 |
| TLR Electrical Limited | Construction | 2012 |
| TMD 92 Ltd | Wholesale & retail | 2024 |
| Today I WIN Limited | Information & communication | 2020 |
| Tomorrows Names.Com Ltd | Real estate | 2000 |
| Tomorrows NAMES13 Ltd | Real estate | 2018 |
| Tony Ashvyre Ltd | Wholesale & retail | 2025 |
| Tony Internet Cafe Ltd | Information & communication | 2013 |
| Topdrip Ltd | Wholesale & retail | 2025 |
| Towteam Ltd | Transport & logistics | 2019 |
| Tradesol Group Ltd | Information & communication | 2017 |
| Trafalgar Training Services Limited | Education | 2021 |
| Travel Wanderlogue Ltd | Administrative & support | 2025 |
| Traveling the Galaxy Trade Ltd | Wholesale & retail | 2024 |
| Travion Ltd | Wholesale & retail | 2025 |
| Trenddailysale Ltd | Wholesale & retail | 2025 |
| Trendynext Ltd | Wholesale & retail | 2026 |
| Trenzyia Limited | Wholesale & retail | 2025 |
| Trichechus Ltd | Wholesale & retail | 2020 |
| Trimmings (Retail) Limited | Wholesale & retail | 2012 |
| Truck Supply Hub Ltd | Wholesale & retail | 2025 |
| True U Hair Ltd | Wholesale & retail | 2026 |
| Truenorthai Ltd | Information & communication | 2025 |