| Stackbuilders Talent Consulting Limited | Administrative & support | 2025 |
| Stacktrace London Ltd | Information & communication | 2013 |
| Stallionz Sports Limited | Arts & recreation | 2014 |
| Stan' S Garage Ltd | Wholesale & retail | 2024 |
| State Drives PVT Limited | Wholesale & retail | 2022 |
| Sterling Gate Investment Limited | Financial services | 2026 |
| STIMUL8-ACTIVITY Service Ltd | Education | 2015 |
| Strategic Insight Solutions Ltd | Information & communication | 2024 |
| Strats Consulting Ltd | Professional & scientific | 2025 |
| Stuart Smalley Ltd | Construction | 2026 |
| Student Consultancy Ltd | Extraterritorial | 2015 |
| Studio Mallick Ltd | Professional & scientific | 2025 |
| SU Kent Cars Ltd | Wholesale & retail | 2022 |
| Suba Transport Ltd | Transport & logistics | 2017 |
| Summer Crest Limited | Real estate | 2017 |
| Sunroad Fish Bar Limited | Hospitality | 2020 |
| Superpainting Ltd | Construction | 2024 |
| Swan Doors & Windows Limited | Construction | 2000 |
| Swans 55 Limited | Hospitality | 2025 |
| Swans Cafe Ltd | Hospitality | 2025 |
| Swanscombe Gents Barber Ltd | Other services | 2023 |
| Swanscombe One Stop Tyres Ltd | Wholesale & retail | 2025 |
| Swanscombe Tyres Ltd | Wholesale & retail | 2025 |
| Swaram (UK) Limited | Information & communication | 2007 |
| Sweetbizz Ltd | Wholesale & retail | 2021 |
| Sweetsoireebakery Ltd | Manufacturing | 2026 |
| T B Carpenters and Builders SE Ltd | Construction | 2021 |
| T&S Reit Limited | Real estate | 2024 |
| T.C.Gas Services Ltd. | Construction | 2015 |
| Tabi Investments Ltd | Real estate | 2021 |
| Talent Konnect Ltd | Information & communication | 2024 |
| Tauro Design Limited | Wholesale & retail | 2019 |
| TBP Energy Limited | Energy | 2021 |
| TBP Initiative Limited | Professional & scientific | 2021 |
| Tdeg Consulting Ltd | Information & communication | 2017 |
| TDS Trans Limited | Transport & logistics | 2022 |
| Techpulseinnovators Ltd | Information & communication | 2024 |
| Techpysch Consultants Ltd | Information & communication | 2023 |
| Techs LAB Ltd | Wholesale & retail | 2026 |
| Techspear Ltd | Information & communication | 2024 |
| Tems Consulting Ltd | Information & communication | 2014 |
| Tenacity Labs Ltd | Information & communication | 2022 |
| Teramax Limited | Hospitality | 2025 |
| Termocasa UK Limited | Wholesale & retail | 2022 |
| Textaid Ltd | Information & communication | 2020 |
| TFM Biotech Ltd | Health & social care | 2023 |
| Thames Circle Services Limited | Construction | 2014 |
| That Dream Story Ltd | Education | 2023 |
| THE Aark Limited | Health & social care | 2015 |
| THE Beauty Nomad Ltd | Other services | 2025 |
| THE Cherry Edit Ltd | Wholesale & retail | 2025 |
| THE Croupier Club Ltd | Arts & recreation | 2016 |
| THE Ejaosan Network CIC | Wholesale & retail | 2025 |
| THE EVE Code Ltd | Other services | 2020 |
| THE Good News Subscription Box Ltd | Wholesale & retail | 2023 |
| THE Right Help CIC | Health & social care | 2023 |
| THE Vely Soapery Ltd | Manufacturing | 2026 |
| Theellamobrand Ltd | Wholesale & retail | 2025 |
| Thompson Green Consultancy Ltd | Information & communication | 2015 |
| Timeframe Limited | Information & communication | 2025 |
| Tipharm Services Limited | Health & social care | 2014 |
| Titus Energy Limited | Professional & scientific | 2022 |
| Tjquist Consultancy Ltd | Real estate | 2015 |
| TLO Management Consultancy Ltd | Professional & scientific | 2025 |
| TML Smart Repair Ltd | Wholesale & retail | 2021 |
| Tomatech Ltd | Information & communication | 2025 |
| Top China INT. Media Ltd | Information & communication | 2021 |
| Top One Percent Group Ltd | Wholesale & retail | 2024 |
| Topaz Therapy Essentials Ltd | Health & social care | 2014 |
| Topsy-Es Limited | Wholesale & retail | 2020 |
| Tosaaj House Limited | Information & communication | 2019 |
| Touro Autos Repair Ltd | Wholesale & retail | 2023 |
| Translink Express Limited | Transport & logistics | 2023 |
| Tri-Consult UK Ltd | Construction | 2023 |
| Trinitron 1 Limited | Transport & logistics | 2026 |
| Trinity Ace Consultants Ltd | Professional & scientific | 2016 |
| Tripod Management Limited | Transport & logistics | 2013 |
| Trivenproperty Limited | Real estate | 2023 |
| Trophy Lift Services Ltd | Construction | 2020 |
| True Energy Solutions Ltd | Professional & scientific | 2025 |
| Truefit Dental Laboratory Limited | Administrative & support | 2005 |
| Tyrone Henry Enterprises Limited | Arts & recreation | 2017 |
| UBH Group Limited | Water & waste | 2019 |
| Udubunch Limited | Professional & scientific | 2025 |
| UK THK Ltd | Wholesale & retail | 2025 |
| UK Turner Homes Limited | Construction | 2023 |
| Ultra Construction 1948 Ltd | Construction | 2026 |
| Unhealth Ltd | Health & social care | 2024 |
| Unicelle Limited | Health & social care | 2019 |
| Uniksoultea Ltd | Arts & recreation | 2026 |
| Upscale Systems Ltd | Information & communication | 2023 |
| Urban Bear Ltd | Transport & logistics | 2025 |
| UVM Properties Limited | Financial services | 2024 |
| UVM Solutions Ltd | Information & communication | 2022 |
| Uwadiae Services Limited | Administrative & support | 2016 |
| V Drug Limited | Construction | 2022 |
| Vanguard Internationalcorporation Limited | Wholesale & retail | 2023 |
| Vardal Information Technology Ltd | Real estate | 2016 |
| Vast Ventures Limited | Wholesale & retail | 2019 |
| Veeval Ventures Ltd | Real estate | 2024 |