| THE Tipsy Grey North Limited | Hospitality | 2018 |
| THE Tipsy Grey South Limited | Hospitality | 2018 |
| THE TOG Shop Ltd | Wholesale & retail | 2023 |
| THE Totes Collective Ltd | Wholesale & retail | 2022 |
| THE Town & Country Landscape Co. Limited | Administrative & support | 2004 |
| THE Traditional Rendering and Building Group Ltd | Construction | 2025 |
| THE Travel Boutique (London) Limited | Administrative & support | 2023 |
| THE Valluga Works Limited | Wholesale & retail | 2025 |
| THE Vapers Cove Brentwood Limited | Wholesale & retail | 2019 |
| THE Vending Hub Ltd | Hospitality | 2025 |
| THE Victoria Park Mortgage Company Ltd | Financial services | 2015 |
| THE Vision Blue Group Ltd | Administrative & support | 2017 |
| THE Vogel Corporation Ltd | Information & communication | 2016 |
| THE Wardrobe Door Company Ltd | Manufacturing | 2026 |
| THE Warm Palette Studio Ltd | Wholesale & retail | 2025 |
| THE Wedding Arrangers Ltd | Professional & scientific | 2016 |
| THE Wellbeing Initiative Ltd | Other services | 2015 |
| THE Wellness Collective Events CIC | Health & social care | 2026 |
| THE Wendy House (Hornchurch) Limited | Other services | 2002 |
| THE Wiggett Group Ltd | Construction | 2015 |
| THE Will Lady Limited | Administrative & support | 2025 |
| THE Wine Warehouse (Chepstow) Management Company Limited | Real estate | 2006 |
| THE Wise Hippo Limited | Health & social care | 2013 |
| THE Woofer Cafe Limited | Hospitality | 2023 |
| THE Worm Farm (IOW) Limited | Extraterritorial | 2016 |
| THE Wright Flooring Limited | Construction | 2024 |
| THE Yummy Juice Company Limited | Manufacturing | 2017 |
| Theluckvaultuk Ltd | Arts & recreation | 2025 |
| Themelia Ltd | Professional & scientific | 2022 |
| Themis Recruit Ltd | Administrative & support | 2023 |
| Theobalds Court Limited | Real estate | 1995 |
| Therapies for Life Ltd | Health & social care | 2023 |
| Therehoboth Limited | Professional & scientific | 2023 |
| Therismos Trading Ltd | Health & social care | 2020 |
| Thermal Fit Ltd | Construction | 2019 |
| Thermal-Tec Insulations Ltd | Construction | 2019 |
| Theydonwood Limited | Real estate | 2018 |
| Think Business Support Ltd. | Administrative & support | 2007 |
| Think Then DO Limited | Wholesale & retail | 2025 |
| THINK1 Media Limited | Professional & scientific | 2012 |
| Thinkedge Solutions Limited | Professional & scientific | 2024 |
| Thinkinvest Global Ltd | Hospitality | 2023 |
| Thiswayup Solutions Ltd | Information & communication | 2026 |
| Thomas England Construction Limited | Construction | 1999 |
| Thomas Joseph Butchery Limited | Manufacturing | 2017 |
| Thomas Joseph Limited | Wholesale & retail | 2026 |
| Thordio Productions Ltd | Wholesale & retail | 2021 |
| Thorndon Environmental Construction Limited | Construction | 2014 |
| Thorndon Gate Limited | Professional & scientific | 2025 |
| Thorndon Residents Company Limited | Households | 2025 |
| Thorndon Tree Surgery Ltd | Agriculture & fishing | 2024 |
| Thotsmith Consulting Limited | Administrative & support | 2023 |
| Thread Essex CIC | Health & social care | 2026 |
| Threadmind AI Ltd | Information & communication | 2026 |
| Three Mountains Contractors Ltd | Construction | 2018 |
| Three Smiths Limited | Households | 2016 |
| Three Threads Clothing Limited | Wholesale & retail | 2018 |
| Thrive a Day Limited | Other services | 2014 |
| Thrive Business Innovation Group Ltd | Professional & scientific | 2019 |
| Throttle Dogs Ltd | Wholesale & retail | 2026 |
| Thryve Services Ltd | Administrative & support | 2025 |
| Thurvas Limited | Real estate | 2025 |
| TIA Commercial Properties Limited | Real estate | 2025 |
| Tiffin Bites Ltd | Hospitality | 2024 |
| Tillingham Hall Contracts Ltd | Agriculture & fishing | 2011 |
| TIM Watts Wealth Management Limited | Financial services | 2011 |
| Time Kitchens Limited | Wholesale & retail | 2012 |
| Time to Learn Ltd | Information & communication | 2026 |
| TIME4LAVISH Limited | Wholesale & retail | 2021 |
| Timothy Properties & Sons Limited | Real estate | 2026 |
| Timox Ltd | Construction | 2017 |
| TIN PAN Media Limited | Information & communication | 2019 |
| Tina "B" UK Limited | Administrative & support | 2022 |
| TIP Top Lofts Ltd. | Construction | 2015 |
| Tipi Woods Ltd | Education | 2018 |
| Tish Press & Company KGE Limited | Professional & scientific | 2018 |
| Tism Developments Limited | Construction | 2025 |
| Titan Development Group Ltd | Construction | 2025 |
| Titan Test Ltd | Information & communication | 2022 |
| Titan Transportation Ltd | Administrative & support | 2016 |
| Titan Truck Park Limited | Administrative & support | 2006 |
| TJ Lords & Lofts Ltd | Construction | 2015 |
| TJ Parish Limited | Information & communication | 2019 |
| TK Accountants Limited | Professional & scientific | 2013 |
| TK Quantity Surveying Ltd | Professional & scientific | 2023 |
| TKD Productions Limited | Information & communication | 2012 |
| Tleh Ltd | Administrative & support | 2023 |
| TMC Essex Electrical Ltd | Construction | 2025 |
| TMD Detailing Ltd | Administrative & support | 2022 |
| TMD Rentals Limited | Professional & scientific | 2013 |
| TMG Inc Limited | Health & social care | 2022 |
| TMP Architecture Ltd | Professional & scientific | 2016 |
| TMS Management Limited | Administrative & support | 1995 |
| TMT Steel Limited | Professional & scientific | 2017 |
| Tmvn Limited | Health & social care | 2025 |
| Tnui Asset Finance Ltd | Financial services | 2011 |
| Tnui Capital LLP | | 2011 |
| Tobello Limited | Wholesale & retail | 2011 |
| Toby Way Management Co Ltd | Households | 2021 |
| Tolu's Cuisine Ltd | Hospitality | 2014 |