| Thorpe Park Properties Ltd | Real estate | 2005 |
| Thorpe Property Partners Ltd | Real estate | 2026 |
| Thorpe Wood Associates Ltd | Professional & scientific | 2014 |
| Thorpe Wood Developments Ltd | Real estate | 2019 |
| Thorpe Wood Holdings Ltd | Financial services | 2019 |
| Thorpe Wood Management Company Limited | Real estate | 2005 |
| Thoughtful Property Solutions Limited | Real estate | 2020 |
| Thrax Ltd | Information & communication | 2026 |
| Threadbear Design Ltd | Wholesale & retail | 2017 |
| Three Bridges Developments Ltd | Construction | 2019 |
| Three Fishes Farms (Spraying & Livestock) Limited | Agriculture & fishing | 2013 |
| Three Fishes Farms Limited | Agriculture & fishing | 2009 |
| Three Kings Investments Ltd | Real estate | 2020 |
| Three Lights Property Group Ltd | Real estate | 2025 |
| Three SIX Five HQ Limited | Wholesale & retail | 2025 |
| Three Trees Care Leasing Ltd | Real estate | 2020 |
| Three Ways Car Body Shop Ltd | Wholesale & retail | 2023 |
| Three Weavers Properties Limited | Real estate | 2023 |
| Threekeydevelopments Ltd | Real estate | 2025 |
| Thrhi Limited | Information & communication | 2024 |
| Thrifty on Demand Ltd | Wholesale & retail | 2024 |
| Thrive Analytics Ltd | Information & communication | 2024 |
| Thrive and Enjoy Ltd | Health & social care | 2017 |
| Thrive Care Network Ltd | Information & communication | 2023 |
| Thrive Netball Academy Ltd | Arts & recreation | 2026 |
| Thrive Property Maintenance Ltd | Construction | 2026 |
| Thrive Therapy & Fitness Ltd | Health & social care | 2025 |
| Thrivemax Ltd | Professional & scientific | 2025 |
| Thronewood Cleaning Ltd | Administrative & support | 2024 |
| Thronewood Healthcare Ltd | Administrative & support | 2023 |
| Thryve Apps Ltd | Information & communication | 2026 |
| THS Infrastructure Limited | Construction | 2025 |
| THS Property Solutions Ltd | Real estate | 2023 |
| THS Transport Logistics Ltd | Transport & logistics | 2026 |
| Thsknn Ltd | Health & social care | 2023 |
| Thurley International Ltd | Wholesale & retail | 2026 |
| Thursday Afternoon Limited | Information & communication | 2020 |
| THW Property Ltd | Real estate | 2024 |
| Thywuo FIX IT Ltd | Construction | 2025 |
| Tibadeyi Ltd | Professional & scientific | 2020 |
| Tiberiu Lucuta Ltd | Health & social care | 2018 |
| Tidal Ventures Ltd | Real estate | 2024 |
| Tiff's Bistro Ltd | Hospitality | 2025 |
| Tigaie Transport Ltd | Transport & logistics | 2024 |
| Tiger Delivery Ltd | Transport & logistics | 2024 |
| Tiger Services Ltd | Construction | 2024 |
| Tiger TOM Holdings Limited | Financial services | 2024 |
| Tiger TOM Investments Limited | Extraterritorial | 2024 |
| Tile-R Roofing Ltd | Construction | 2022 |
| Tilia Cordata Ltd | Wholesale & retail | 2026 |
| Tillbrook IT Solutions Limited | Information & communication | 2017 |
| Tilly & JAZ Ltd | Wholesale & retail | 2024 |
| Tilly & ZO Limited | Transport & logistics | 2022 |
| Timber Toys Ltd | Wholesale & retail | 2025 |
| Timbercraft Innovations Ltd | Construction | 2024 |
| Timberlake Media Limited | Professional & scientific | 2025 |
| Timberline Build Ltd | Manufacturing | 2025 |
| Timbers Homes Limited | Real estate | 2026 |
| Timco Properties Ltd | Real estate | 2025 |
| Time 4 Staff Ltd | Health & social care | 2018 |
| Time Investments Limited | Administrative & support | 1999 |
| Time Property Management Ltd | Real estate | 2021 |
| Time to Coach Ltd | Arts & recreation | 2018 |
| Timeless Beauty Salon Ltd | Other services | 2026 |
| Timeless Packaging Ltd | Wholesale & retail | 2025 |
| Timeline Corporate Services Limited | Extraterritorial | 2017 |
| Timeline Wealth Management Limited | Financial services | 2013 |
| Timely Services 24/7 Ltd | Administrative & support | 2022 |
| Timesheet Buddy Limited | Professional & scientific | 2023 |
| Timo Transport Ltd | Transport & logistics | 2017 |
| Tinaplaxe Limited | Transport & logistics | 2016 |
| Tiney Angels Ltd | Health & social care | 2026 |
| Tinklinis Marketingas Ltd | Professional & scientific | 2021 |
| Tinsley Distribution Ltd | Transport & logistics | 2018 |
| Tiny IT Ltd | Information & communication | 2015 |
| Tiny Steps Nursery and Pre-School Ltd | Health & social care | 2023 |
| TIP Top Logistics Ltd | Transport & logistics | 2024 |
| Tipsy COW Ltd | Extraterritorial | 2026 |
| Tirconnell Property Holdings Limited | Financial services | 2025 |
| Tirob Services Ltd | Transport & logistics | 2025 |
| Tirogre Ltd | Administrative & support | 2024 |
| Tisol Estates Ltd | Real estate | 2023 |
| Titan Nutrition Ltd | Hospitality | 2025 |
| Titan Tinting & Wraps Ltd | Wholesale & retail | 2024 |
| Titanium Fibre Ltd | Construction | 2026 |
| Tithe Farm Pastures Management Company Limited | Households | 2006 |
| Tiwanny Ltd | Administrative & support | 2006 |
| Tiwara Ltd | Wholesale & retail | 2025 |
| Tixus Ltd | Information & communication | 2026 |
| TJ Burnac Ltd | Transport & logistics | 2014 |
| TJ Property and Development Ltd | Real estate | 2018 |
| TJ Sourcing Limited | Hospitality | 2019 |
| Tj-Co Limited | Professional & scientific | 2015 |
| TJA Optical Ltd | Health & social care | 2022 |
| Tjay Consultancy Limited | Professional & scientific | 2020 |
| Tjay Properties Limited | Real estate | 2021 |
| TJB Transport Ltd | Transport & logistics | 2023 |
| Tjsi Holdings Limited | Other services | 2025 |
| TJT Properties Ltd | Real estate | 2017 |
| TK Complex Ltd | Wholesale & retail | 2023 |