| TIM Gray Consulting Limited | Professional & scientific | 2016 |
| Time & Travel Competitions Limited | Arts & recreation | 2026 |
| Time 2 Play Trading Limited | Arts & recreation | 2023 |
| Time Critical Freight Ltd | Transport & logistics | 2016 |
| Time for YOU (Newcastle) Limited | Other services | 2003 |
| Time Sheet Technologies Ltd | Information & communication | 2015 |
| Timec 1306 Limited | Information & communication | 2011 |
| Timec 1421 Limited | Professional & scientific | 1937 |
| Timec 1667 Limited | Professional & scientific | 2018 |
| Timec 1738 Limited | Financial services | 2020 |
| Timec 1811 Limited | Financial services | 2022 |
| Timec 1870 Limited | Extraterritorial | 2024 |
| Timec 1910 Limited | Extraterritorial | 2025 |
| Timec 1923 Limited | Extraterritorial | 2025 |
| Timec 1926 Limited | Extraterritorial | 2025 |
| Timec 1930 Limited | Extraterritorial | 2025 |
| Timec 1933 Limited | Extraterritorial | 2025 |
| Timec 1934 Limited | Extraterritorial | 2025 |
| Timec 1935 Limited | Extraterritorial | 2025 |
| Timec 1936 Limited | Extraterritorial | 2025 |
| Timec 1937 Limited | Extraterritorial | 2025 |
| Timec 1938 Limited | Extraterritorial | 2025 |
| Timec 1939H Limited | Financial services | 2026 |
| Timec 1940P Limited | Financial services | 2026 |
| Timec 1941W Limited | Financial services | 2026 |
| Timec 1942E Limited | Extraterritorial | 2026 |
| Timely Imaging Medical Ltd | Health & social care | 2019 |
| Timemaps Limited | Information & communication | 2007 |
| Times Square Leisure Ltd | Hospitality | 2021 |
| Timestar Developments Limited | Professional & scientific | 1990 |
| Timileyin Limited | Real estate | 2021 |
| Timor Watch Company Limited | Wholesale & retail | 2019 |
| TIN on a Wall North Tyneside CIC | Hospitality | 2023 |
| TIN TIN Investments Limited | Hospitality | 2015 |
| Tina Chawla Coaching Ltd | Health & social care | 2023 |
| Tinklers Yard Limited | Construction | 2022 |
| Tiny Dragon Productions | Arts & recreation | 2021 |
| Tiny Flutters and Kicks LLP | | 2021 |
| Tiny Solutions Group Ltd | Transport & logistics | 2020 |
| Tiny Tiny Limited | Hospitality | 2022 |
| Tipame Ltd | Information & communication | 2026 |
| Tipico Restaurant Ltd | Hospitality | 2024 |
| Tipperup Limited | Wholesale & retail | 2020 |
| Tiptop Residential Ltd | Households | 2024 |
| Tipu Sales and Service Company Ltd | Wholesale & retail | 2025 |
| Tipun Limited | Professional & scientific | 2020 |
| Tirsul Limited | Health & social care | 1989 |
| Tirumala Soloutions Ltd | Information & communication | 2025 |
| Titan 123 Dormant Limited | Professional & scientific | 2018 |
| Titan Automation Ltd | Professional & scientific | 2011 |
| Titan Fishing Products Limited | Manufacturing | 1992 |
| Titan Industrial Services Ltd | Professional & scientific | 2025 |
| Titan N.E Ltd | Hospitality | 2025 |
| Titan Pallas Limited | Information & communication | 2024 |
| Titan Workforce Ltd | Administrative & support | 2023 |
| Titans Social Media Limited | Professional & scientific | 2026 |
| Titanwatch Security Ltd | Administrative & support | 2026 |
| Tivoli Collectibles Limited | Real estate | 2023 |
| TJ 22 North East Ltd | Real estate | 2024 |
| TJ Gray Consultancy Ltd | Construction | 2025 |
| Tj-Packhaus Ltd | Wholesale & retail | 2025 |
| TJI Solutions Aberdeen Ltd | Manufacturing | 2019 |
| TJI Solutions Europe Ltd | Manufacturing | 2019 |
| TJI Solutions Ltd | Real estate | 2019 |
| TJM Consulting Ltd | Information & communication | 2023 |
| TJR Middleton Properties Ltd | Real estate | 2024 |
| TJS NCL Ltd | Hospitality | 2025 |
| TJW GAS Services Ltd. | Construction | 2015 |
| TJW Joinery Services Limited | Construction | 2011 |
| TK Locums (NE) Ltd | Health & social care | 2017 |
| TKO "Training, Knowledge & Opportunities" Limited | Education | 2016 |
| TKS Education Ltd | Education | 2021 |
| TKS Group Ltd | Real estate | 2018 |
| TKS Home Express Ltd | Transport & logistics | 2020 |
| TKS Project Plus Limited | Professional & scientific | 2013 |
| TLC Catering Limited | Hospitality | 2018 |
| TLG Business Services Limited | Education | 2014 |
| TLR Healthcare Ltd | Wholesale & retail | 2025 |
| Tlrg Holdings Ltd | Hospitality | 2026 |
| Tlrg-D Ltd | Hospitality | 2026 |
| TLT Property Limited | Real estate | 2019 |
| TLT Trading (NE) Limited | Real estate | 2023 |
| Tlto Limited | Professional & scientific | 2016 |
| Tltp Properties Ltd | Real estate | 2020 |
| TM Offshore Services Ltd | Professional & scientific | 2022 |
| TM2C Construction Ltd | Construction | 2020 |
| TM2C Limited | Information & communication | 2018 |
| TMB Quantum Limited | Professional & scientific | 2025 |
| TMB Realty Ltd | Construction | 2024 |
| Tmbi Management Company | Hospitality | 2024 |
| TMC Farming Limited | Agriculture & fishing | 2026 |
| TMC Garage Ltd | Wholesale & retail | 2004 |
| Tmcompany Ltd | Wholesale & retail | 2025 |
| TMD Trading Ltd | Other services | 2019 |
| Tmdigital Studio Ltd | Information & communication | 2025 |
| TME Consulting Services Limited | Information & communication | 2015 |
| Tmft Services Ltd | Administrative & support | 2024 |
| TMG Holdings Ltd | Real estate | 2015 |
| TMG Modelmakers Ltd | Professional & scientific | 2011 |
| TMG Swansea Ltd | Construction | 2018 |