| Tippikl Labs Ltd | Information & communication | 2025 |
| Tiptop Taps Ltd | Construction | 2025 |
| Tiro Football Media Limited | Manufacturing | 2025 |
| Tishost Ltd | Information & communication | 2019 |
| Titan Tennis Academy Ltd | Arts & recreation | 2016 |
| Titchwell Manor Hotel Limited | Hospitality | 1973 |
| Titi Fresh Limited | Administrative & support | 2025 |
| Titop Consult Limited | Real estate | 2015 |
| Tivu Alma Ltd | Information & communication | 2026 |
| TIW Consulting Limited | Professional & scientific | 2025 |
| TJ Catapults Services Ltd | Manufacturing | 2026 |
| Tjcatapults Ltd | Manufacturing | 2025 |
| TJH Civils Limited | Construction | 2021 |
| Tjinakiet Property Limited | Real estate | 2020 |
| TJS Heating & GAS Services Ltd | Construction | 2019 |
| TK Digital Studio Ltd | Information & communication | 2022 |
| TKL Investments Limited | Financial services | 2025 |
| TKL Leisure Limited | Arts & recreation | 2018 |
| TLC Digital Agency Ltd | Professional & scientific | 2023 |
| TLL Capital Limited | Real estate | 2025 |
| TLV Ltd | Administrative & support | 2026 |
| TM Ace Limited | Construction | 2022 |
| TM Aviation Ltd | Professional & scientific | 2016 |
| TM Crop Management Limited | Agriculture & fishing | 2021 |
| TM IP Ltd | Health & social care | 2025 |
| Tmsupply Ltd | Financial services | 2023 |
| Tnft Prop 61 Ltd | Real estate | 2023 |
| Tnft Prop 64 Ltd | Real estate | 2023 |
| TNZ Group Limited | Real estate | 2024 |
| TO BE Transport & Logistics Ltd | Transport & logistics | 2025 |
| TO PAZ Wellness Ltd | Wholesale & retail | 2026 |
| Toad Lickers Collective CIC | Arts & recreation | 2024 |
| TOB Surveying Limited | Construction | 2023 |
| Toktamish Limited | Hospitality | 2014 |
| Tokuna Ltd | Wholesale & retail | 2022 |
| Tokyo Oysy Sushi Ltd | Hospitality | 2014 |
| Tolerable Events CIC | Arts & recreation | 2026 |
| Tolex Lifestyles Ltd | Arts & recreation | 2023 |
| Tolicious Ltd | Wholesale & retail | 2024 |
| Toll Gavel Limited | Real estate | 2013 |
| Toloanz Limited | Financial services | 2013 |
| TOM Nash Aviation Limited | Manufacturing | 2019 |
| TOM Old Coaching Limited | Health & social care | 2023 |
| TOM Old Property Ltd | Real estate | 2021 |
| Tom's Audio School Ltd | Information & communication | 2024 |
| Tommy Healthcare Ltd | Health & social care | 2023 |
| Tomorrows Will Ltd | Professional & scientific | 2025 |
| Tonax Media Ltd | Information & communication | 2025 |
| Tonlin Management Ltd | Households | 2020 |
| Tony D Services Ltd | Transport & logistics | 2019 |
| Tony Lees Consultants Ltd | Real estate | 2024 |
| Tony Shepherd Limited | Information & communication | 2023 |
| Tooby Agricultural Services Ltd | Agriculture & fishing | 2018 |
| Toofy Ltd | Health & social care | 2019 |
| Tool Hire Ltd | Administrative & support | 2018 |
| Toolbelt Software Ltd | Information & communication | 2026 |
| Toonsoft Ltd | Information & communication | 2022 |
| Top Cuts Men’S Grooming Limited | Other services | 2026 |
| Top Dog Digital Limited | Information & communication | 2014 |
| Top Drive Autos Ltd | Wholesale & retail | 2024 |
| Top Hosting Advice Ltd | Information & communication | 2025 |
| Top Line Drylining Ltd | Construction | 2020 |
| Top One Investment Limited | Real estate | 2018 |
| Topblast Ltd | Arts & recreation | 2021 |
| Topcare Medical Services Limited | Administrative & support | 2021 |
| Topet Pharma UK Ltd | Extraterritorial | 2016 |
| Toplink Agricultural Limited | Wholesale & retail | 2023 |
| Toplink Healthcare Ltd | Health & social care | 2018 |
| Topnotch DEV Ltd | Information & communication | 2025 |
| Topptastic Ltd | Wholesale & retail | 2020 |
| Toptble. Ltd. | Hospitality | 2025 |
| Torkite Ltd | Information & communication | 2026 |
| Torrin Group Ltd | Construction | 2025 |
| Total Care Painting and Decorating Limited | Construction | 2015 |
| Total Control Solutions Ltd | Manufacturing | 2019 |
| Total Global Tech Services Ltd | Information & communication | 2025 |
| Total Orthopaedic Solutions Ltd | Health & social care | 2013 |
| Total Therapy - Estetica Limited | Other services | 2023 |
| Total Wellness Ltd | Wholesale & retail | 2005 |
| Totally Brandnew Ltd | Professional & scientific | 2025 |
| Totally HR Limited | Administrative & support | 2009 |
| Totaltea MAD Ltd | Wholesale & retail | 2026 |
| Totspot Ltd | Professional & scientific | 2026 |
| Touc Limited | Information & communication | 2022 |
| Touch Miss UK Ltd | Wholesale & retail | 2025 |
| Tour Geeky Ltd | Information & communication | 2024 |
| Tour World Limited | Administrative & support | 2020 |
| Touristy Limited | Information & communication | 2019 |
| Tourloom Limited | Information & communication | 2025 |
| Toutsuite Ltd | Professional & scientific | 2026 |
| Tovey Investments Ltd | Real estate | 2018 |
| Towatp Ltd | Real estate | 2019 |
| Tower Gardens (Scawthorpe) Management Company Limited | Real estate | 2016 |
| Tower Road RTM Company Limited | Households | 2020 |
| Tower Software Limited | Information & communication | 2003 |
| Townwood & Co. Ltd | Extraterritorial | 2026 |
| Townwood Property Limited | Real estate | 2024 |
| Toybox Science Limited | Professional & scientific | 2023 |
| TP Fires.Co.Uk Ltd | Wholesale & retail | 2022 |
| TPC Consult (UK) Ltd | Professional & scientific | 2014 |