| Technikmarkt TMA Ltd | Information & communication | 2024 |
| Tecla Languages Limited | Professional & scientific | 2009 |
| Tenam Limited | Wholesale & retail | 2000 |
| Tenniscenes Ltd | Information & communication | 2025 |
| TGF Cheshunt Ltd | Hospitality | 2022 |
| THE Browns Real Estate Limited | Real estate | 2025 |
| THE Calvary Centre | Other services | 2013 |
| THE Enterprise a Group Ltd | Other services | 2023 |
| THE Genotin Group Limited | Other services | 2012 |
| THE Ideaswork Limited | Other services | 2002 |
| THE Kingston Lane Management Company Limited | Households | 2005 |
| THE Leden Group Limited | Wholesale & retail | 2002 |
| THE Luxurious Image Ltd | Other services | 2020 |
| THE Only Way IS Property Limited | Real estate | 2017 |
| THE Peniel Centre | Administrative & support | 2022 |
| THE Silver Dog Company Limited | Transport & logistics | 2024 |
| THE Tesco Crown LP | | 2003 |
| THE Tesco Fuchsia Limited Partnership | | 2006 |
| THE Tesco Grey Limited Partnership | | 2006 |
| THE Tesco Pink Limited Partnership | | 2006 |
| THE Tesco Purple Limited Partnership | | 2006 |
| THE Tesco Violet Limited Partnership | | 2006 |
| THE Tudor Press Limited | Information & communication | 2003 |
| THE Turkey Street Flat Management Company Limited | Households | 2004 |
| THE Valle Academy Trust Ltd | Education | 2002 |
| Thedecor Ltd | Wholesale & retail | 2020 |
| Thomas Oliver UK LLP | | 2009 |
| TIM Fenby Design Limited | Professional & scientific | 2010 |
| Tiny Tots Daycare Ltd | Education | 2007 |
| TJF Security Ltd | Administrative & support | 2019 |
| TL Environmental Limited | Professional & scientific | 2018 |
| TLC Bravura Homes Ltd | Real estate | 2020 |
| TM Boutique Ltd | Other services | 2019 |
| TOM Brown Catering Solutions Ltd | Hospitality | 2018 |
| TOM Trims Limited | Other services | 2020 |
| Toma Build & Design Ltd | Construction | 2020 |
| Toma Property Limited | Real estate | 2025 |
| Tony Wilson Builders Ltd | Construction | 2021 |
| Towerridge Construction Limited | Construction | 2019 |
| Tree Worx Tree Surgery Limited | Administrative & support | 2018 |
| Trek International Haulage Limited | Transport & logistics | 2008 |
| Trelawney Place Residents Association Limited | Households | 2003 |
| Triple AAA Hoddesdon Limited | Transport & logistics | 2012 |
| Triple Crown Management Limited | Households | 1983 |
| Trpfht Equity LLP | | 2025 |
| Truck Fleet Solutions Ltd | Wholesale & retail | 2014 |
| Truck Repairs @ Hackney Ltd | Wholesale & retail | 2015 |
| Truck Tyres (London) Limited | Extraterritorial | 2006 |
| Truckcare (UK) Limited | Manufacturing | 2011 |
| Truckcare Haulage Solutions Limited | Transport & logistics | 2016 |
| Truestay Ltd | Administrative & support | 2019 |
| Tubeline Limited | Professional & scientific | 1999 |
| Tulsesense Developments Alpha Limited | Construction | 2022 |
| Tulsesense Developments Bravo Limited | Construction | 2022 |
| Tulsesense Developments Charlie Limited | Construction | 2022 |
| Tulsesense Developments Delta Limited | Construction | 2022 |
| Tulsesense Developments Echo Limited | Construction | 2022 |
| Tulsesense Developments Foxtrot Limited | Construction | 2022 |
| Tulsesense Developments Golf Limited | Construction | 2022 |
| Tulsesense Developments Hotel Limited | Construction | 2022 |
| Tulsesense Developments India Limited | Construction | 2022 |
| Tulsesense Developments Juliett Limited | Construction | 2022 |
| Turnershill Cafe Ltd | Hospitality | 2025 |
| Turning Point Care Limited | Health & social care | 2009 |
| Tyrebrokers Limited | Manufacturing | 2014 |
| Ultimate Building Solutions Limited | Other services | 2005 |
| Ultra Cleaning Commercial Services Ltd | Administrative & support | 2023 |
| Unit 19 Ltd | Construction | 2023 |
| Universal Personal Finance Limited | Financial services | 2011 |
| Vastlink Business Solutions Ltd | Administrative & support | 2025 |
| Veitch Estates Limited | Real estate | 2010 |
| Venra Limited | Wholesale & retail | 2024 |
| Vent FLO Mechanical Ltd | Construction | 2021 |
| Vermikil Pest Control Services Limited | Administrative & support | 2004 |
| Vigocrest Limited | Construction | 1990 |
| Village Electrical Services Ltd | Construction | 2009 |
| Village Fencing (Contractor's) Limited | Other services | 2023 |
| Village Fencing Ltd | Other services | 2002 |
| Village Road Residents (Freehold) Limited | Real estate | 2003 |
| Vinceraven Ltd | Professional & scientific | 2012 |
| VIP Car Perfumes Ltd | Administrative & support | 2023 |
| Visan Petcare UK Ltd | Manufacturing | 2020 |
| Visionobi Limited | Information & communication | 2014 |
| Walk the Walk Family Support Service Limited | Education | 2005 |
| WCA Capital Limited | Information & communication | 2014 |
| WE ARE MA Ltd | Professional & scientific | 2020 |
| WE Buy ANY Football Shirt Limited | Wholesale & retail | 2022 |
| Wedderburns London Ltd | Professional & scientific | 2018 |
| Westgate House (Ware) Limited | Construction | 1984 |
| Westland Brook Limited | Administrative & support | 2024 |
| White Rose Training Limited | Education | 2004 |
| Wiltshire Avenue (Hornchurch) Flat Management Company Limited | Households | 2004 |
| Windmill Chase(Block A)Management Company Limited | Households | 1984 |
| Windmill Chase(Block C)Management Company Limited | Households | 1984 |
| Windmill Chase(Block F)Management Company Limited | Households | 1985 |
| Windmill Chase(Block L)Management Company Limited | Households | 1985 |
| Winning With Wande Limited | Professional & scientific | 2021 |
| Winsor Asia Limited | Wholesale & retail | 2010 |
| Wollerp International Ltd | Construction | 2022 |
| Wollerp UK Ltd | Information & communication | 2022 |