| THE Tantalising Tomato Limited | Hospitality | 2023 |
| THE Teeny Tiny Dog Shop Ltd | Wholesale & retail | 2026 |
| THE Tefl Companion Ltd | Education | 2026 |
| THE Tefl UNI Ltd | Education | 2026 |
| THE Thatched Lodge Ltd | Households | 2025 |
| THE Things YOU Love Store Ltd | Wholesale & retail | 2020 |
| THE Third Zone Limited | Manufacturing | 2026 |
| THE Tickle Trout (Woolpit Road Norton) Management Company Limited | Other services | 2003 |
| THE Toyboxxx Ltd | Wholesale & retail | 2023 |
| THE Transformation Clinic (TTC) Ltd | Professional & scientific | 2020 |
| THE Transformative Network Ltd | Wholesale & retail | 2023 |
| THE Treasures Initiative CIC | Health & social care | 2025 |
| THE Truders Limited | Professional & scientific | 2019 |
| THE Tudor Rose Florists Limited | Wholesale & retail | 2008 |
| THE Twelfth Magpie Limited | Information & communication | 1999 |
| THE Twerbs Limited | Education | 2006 |
| THE Uniq Collective Ltd | Professional & scientific | 2026 |
| THE Untold Store Ltd | Wholesale & retail | 2026 |
| THE Urban Roast Coffee Company Limited | Manufacturing | 2013 |
| THE Valour Travel Ltd | Administrative & support | 2025 |
| THE Vampires Lair Ltd | Wholesale & retail | 2024 |
| THE Vastum Group Ltd | Water & waste | 2011 |
| THE Very Social Media Girl Limited | Manufacturing | 2025 |
| THE Village Bury ST Edmunds CIC | Health & social care | 2025 |
| THE Vitalbridge Group Ltd | Administrative & support | 2025 |
| THE Vocational Rehabilitation Association Limited | Other services | 2007 |
| THE Vonex Ltd | Information & communication | 2026 |
| THE WAREHOUSE42 Ltd | Wholesale & retail | 2019 |
| THE Water Feature Specialist Limited | Administrative & support | 2014 |
| THE Waterfalls Group Ltd | Manufacturing | 2019 |
| THE Wealth Brand Ltd | Professional & scientific | 2025 |
| THE Weeping Willow (Barrow) Limited | Hospitality | 2018 |
| THE Weigel Clinic Limited | Other services | 2009 |
| THE Wellness Track Limited | Manufacturing | 2024 |
| THE Westbury Centre | Other services | 2013 |
| THE Whisky Nest Limited | Wholesale & retail | 2020 |
| THE Whitworth Co-Partnership LLP | | 2008 |
| THE Wild West Horse Company Limited | Agriculture & fishing | 2017 |
| THE Wilkes Head Limited | Hospitality | 2008 |
| THE Willow Whisperer Ltd | Wholesale & retail | 2025 |
| THE Willows (Child Development) Ltd | Health & social care | 2019 |
| THE Window Centre (Suffolk) Limited | Construction | 2019 |
| THE Wine Cellar BSE Limited | Wholesale & retail | 2022 |
| THE Wine Importers Limited | Wholesale & retail | 2022 |
| THE Winery at Thurston Place LLP | | 2018 |
| THE Wiveton Bell Limited | Hospitality | 2007 |
| THE Woolley Farm Ltd | Agriculture & fishing | 2019 |
| THE Workplace Inclusion Consultancy Ltd | Professional & scientific | 2026 |
| THE Workshield Group Ltd | Wholesale & retail | 2026 |
| THE Wytchwood Snug Limited | Wholesale & retail | 2026 |
| THE Yews 32A Julian Road Management Company Limited | Extraterritorial | 2010 |
| THE Yoga Bone Ltd | Other services | 2024 |
| Theaker Estate Agents Ltd | Real estate | 2003 |
| Theanchorcollective C.I.C. | Other services | 2025 |
| Theanchorfi Ltd | Education | 2026 |
| Theashzero Ltd | Information & communication | 2026 |
| Theatre Inspiring Change CIC | Education | 2023 |
| Thedeveloper Labs Ltd | Information & communication | 2025 |
| Thedwastre Education Trust | Education | 2015 |
| THEE39BARN Ltd | Wholesale & retail | 2024 |
| Theep Limited | Arts & recreation | 2020 |
| Theflyingaccountant Ltd | Professional & scientific | 2023 |
| Thegardenwow Limited | Administrative & support | 2025 |
| Thegreengroup (UK) Ltd | Professional & scientific | 2018 |
| Theherbalquarters Ltd | Wholesale & retail | 2023 |
| Themarketingcompany Ltd | Information & communication | 2019 |
| Themesmith.Ai Ltd | Information & communication | 2025 |
| Thenne Ltd | Wholesale & retail | 2026 |
| Theoria Limited | Professional & scientific | 2016 |
| Theory of US Ltd | Information & communication | 2026 |
| Theoryinpractice Ltd | Hospitality | 2024 |
| Theplug.Gh Ltd | Administrative & support | 2021 |
| Theprofitbox Co. Ltd | Wholesale & retail | 2025 |
| Therapy With Tamarra Limited | Health & social care | 2023 |
| Thermal E Ltd | Extraterritorial | 2020 |
| Thetford Town Football Club Ltd | Arts & recreation | 2026 |
| Theukphonefixer Ltd | Wholesale & retail | 2024 |
| Theuksuperstore Ltd | Wholesale & retail | 2023 |
| Thevirtualbdm Ltd | Professional & scientific | 2026 |
| Thgg Consulting Ltd | Wholesale & retail | 2023 |
| Thiccboychains Ltd | Wholesale & retail | 2026 |
| Thingoe Mews Management Company Limited | Households | 2021 |
| Things ARE Made Limited | Wholesale & retail | 2024 |
| Think BE Become Ltd | Health & social care | 2024 |
| Think Further Ltd | Information & communication | 2026 |
| Thinking Ahead Limited | Health & social care | 2016 |
| Thinking Light Coach Ltd | Professional & scientific | 2022 |
| Thinking Tiger Solutions Ltd | Information & communication | 2025 |
| Thinkovity Limited | Information & communication | 2022 |
| Thio Holdings Ltd | Financial services | 2020 |
| Third Exposure Limited | Health & social care | 2022 |
| Third Room CIC | Health & social care | 2025 |
| Thirsty Dog Limited | Administrative & support | 2009 |
| Thirty One Grams Ltd | Wholesale & retail | 2022 |
| Thirty Seven Estates Limited | Financial services | 2024 |
| This GUY Produces Limited | Manufacturing | 2013 |
| This IS Bird Media Ltd | Professional & scientific | 2024 |
| This IS Bounce UK Limited | Information & communication | 2020 |
| Thisdotclose Ltd | Wholesale & retail | 2022 |
| Thistle Mill Properties Ltd | Real estate | 2024 |