| THE Truffaldino Partnership Limited | Professional & scientific | 2003 |
| THE Village Seamstress Limited | Other services | 2023 |
| Themediaflow Ltd | Other services | 2008 |
| Third Light Limited | Information & communication | 2002 |
| Thomas & Young Wealth Management Group Ltd | Financial services | 2021 |
| Thomas Medico-Legal Services Ltd | Health & social care | 2020 |
| Toby Marsh Creative Limited | Professional & scientific | 2015 |
| Todd Contracting Limited | Administrative & support | 2015 |
| Tony Sandles Glass Ltd | Professional & scientific | 2008 |
| Top With Cinnamon Limited | Professional & scientific | 2016 |
| Totem Group Limited | Financial services | 2023 |
| Tourbillon Holding Limited | Hospitality | 2025 |
| Tourbillon One Limited | Hospitality | 2025 |
| Trailer of Life (Cambridge) Limited | Administrative & support | 2008 |
| Triton Alpha Limited | Financial services | 2013 |
| Triton Contracts Limited | Construction | 2009 |
| Triton Interiors Limited | Real estate | 2014 |
| Turbostream Ltd | Information & communication | 2011 |
| Tussie Mussie Limited | Professional & scientific | 1997 |
| TWENTY20 Properties Ltd | Real estate | 2017 |
| Undershire Ltd | Administrative & support | 2004 |
| Unico Technology Europe | | 1998 |
| Vallance Plumbing and Heating Ltd | Construction | 2022 |
| Vincent Square Flats Management Limited | Households | 2007 |
| Vine Refurbishments Limited | Extraterritorial | 2003 |
| VMH Properties Ltd | Real estate | 2025 |
| Vmhosts Holdings Limited | Financial services | 2024 |
| Wardfranchise Ltd | Arts & recreation | 2024 |
| Warner Coaching & Consulting Ltd | Professional & scientific | 2024 |
| Warren Point Limited | Real estate | 1981 |
| Wavefx Limited | Information & communication | 2003 |
| Welham Woodwork Limited | Construction | 2003 |
| White Tiger Property Ltd | Real estate | 2023 |
| Witstock Advisory Limited | Professional & scientific | 2024 |
| Witstock Limited | Professional & scientific | 2013 |
| Witstock SPV 1 Limited | Financial services | 2024 |
| Witstock SPV 2 Limited | Financial services | 2024 |
| Witstock SPV 3 Limited | Financial services | 2024 |
| Woodford Wheels Ltd | Wholesale & retail | 2012 |
| Woodgate House Limited | Real estate | 2009 |
| Woodoak Limited | Construction | 2013 |
| Wordingham Holdings Ltd | Financial services | 2025 |
| Wordingham Properties Ltd | Real estate | 2018 |
| Working Titles Publishing Limited | Information & communication | 1998 |
| Yatebank Services Ltd | Wholesale & retail | 2009 |
| Young Starz Ltd | Arts & recreation | 2014 |
| Your Story PR Limited | Professional & scientific | 2019 |
| ZAG Group Ltd | Information & communication | 2021 |