| Teneric Limited | Professional & scientific | 2001 |
| Tequilas of Mexico Limited | Wholesale & retail | 2009 |
| TFW Furniture Group Limited | Financial services | 2023 |
| TFW Furniture Limited | Wholesale & retail | 2012 |
| TH2026 LLP | | 2026 |
| THE Atlantic Systems Guild Limited | Information & communication | 1978 |
| THE Bolt & Brown Group Limited | Real estate | 2016 |
| THE Buzz House UK Ltd | Administrative & support | 2021 |
| THE Gables Freeholder Management Limited | Households | 2012 |
| THE Jafri Property Partnership LLP | | 2017 |
| THE Sebastopol Development Limited | Real estate | 2018 |
| THE Torrington Group Ltd | Financial services | 2016 |
| Theorem Technology Limited | Information & communication | 2014 |
| Thurrock Facilities Maintenance Ltd | Construction | 2024 |
| Tiger Supplies Limited | Wholesale & retail | 2002 |
| Tilbury Riverside Group Limited | Financial services | 2023 |
| Titanic Lounge Ltd | Hospitality | 2022 |
| Total Home UK Ltd | Construction | 2016 |
| Totally Charged Distribution Ltd | Wholesale & retail | 2020 |
| TPF Europa Holdings Limited | Financial services | 2020 |
| TPF Plastics Limited | Manufacturing | 2014 |
| Trace IQ Limited | Wholesale & retail | 2026 |
| Tradevault Limited | Wholesale & retail | 2020 |
| Trafalgar Square Management (2014) Limited | Other services | 2014 |
| Traffic Site Equipment Limited | Other services | 2021 |
| Transfer Production Limited | Manufacturing | 2020 |
| Trayodes Ltd | Information & communication | 2025 |
| Triple a Transport Services Limited | Transport & logistics | 1988 |
| Tropical Sun Foods Limited | Extraterritorial | 2021 |
| Trunk Images (UK) Limited | Professional & scientific | 2014 |
| Tsunami Axis Labs LLP | | 2012 |
| Tsunami Axis Limited | Construction | 1999 |
| Turning Leaf Facilities Limited | Professional & scientific | 2003 |
| Tvisha Business Ltd | Wholesale & retail | 2026 |
| Tycus Limited | Construction | 2011 |
| Tygo Group LLP | | 2011 |
| Tygo Limited | Administrative & support | 2011 |
| Uluvv LLP | | 2014 |
| Uplands (Phase III) Limited | Other services | 2002 |
| Upwood Distribution Limited | Wholesale & retail | 2022 |
| V S Constructions Ltd | Construction | 2020 |
| Valentin Matei Limited | Transport & logistics | 2017 |
| Vijay Traders Ltd | Wholesale & retail | 2024 |
| Village Flavours Ltd | Hospitality | 2023 |
| Virtax Accountants Limited | Professional & scientific | 2022 |
| Viya Events Ltd | Information & communication | 2015 |
| Wanis International Foods Limited | Wholesale & retail | 2020 |
| Wanis Management Services LLP | | 2012 |
| WES Industrial Gases Limited | Wholesale & retail | 2012 |
| WHO Needs Shops Limited | Wholesale & retail | 2008 |
| Wind Song Investments Limited | Real estate | 2011 |
| Wood Street Logistics Limited | Extraterritorial | 2019 |
| Yardman Vibes Ltd | Wholesale & retail | 2026 |
| YDL Limited | Wholesale & retail | 2016 |
| Yellow Balloon Limited | Professional & scientific | 2009 |
| Yiomi Ltd | Health & social care | 2013 |
| YOU CAN DO Anything Limited | Other services | 2022 |
| Yres Limited | Real estate | 2025 |
| Zaaroni Ltd | Professional & scientific | 2021 |
| ZB Barbers Limited | Other services | 2023 |
| Zibidi Holdings Limited | Financial services | 2022 |
| Zinng Holdings Limited | Construction | 2024 |
| Ztos Business Care Ltd | Wholesale & retail | 2012 |