| Tisco-Uk Ltd | Wholesale & retail | 2019 |
| Titan Bridge Ltd | Professional & scientific | 2025 |
| Titan Cards Ltd | Wholesale & retail | 2019 |
| Titan Chippy Limited | Hospitality | 2025 |
| Titan Door Systems Ltd | Manufacturing | 2019 |
| Titan Estates Ltd | Construction | 2006 |
| Titan Way Management Limited | Real estate | 1988 |
| Titan. the Advertising Agency Limited | Professional & scientific | 2016 |
| Titans Developer Ltd | Real estate | 2024 |
| Titans JR Limited | Real estate | 2023 |
| Titford Funeral Service Limited(The) | Extraterritorial | 1959 |
| Titicaca Travel Limited | Extraterritorial | 2009 |
| Titox Ltd | Wholesale & retail | 2020 |
| Tivoli Inns (Cardiff) Limited | Hospitality | 2015 |
| Tivoli Inns Limited | Hospitality | 2009 |
| Tixtrip Ltd | Administrative & support | 2026 |
| TJB Accountancy Services Limited | Professional & scientific | 2015 |
| TJS Fundraising Consultants Ltd | Professional & scientific | 2025 |
| TK Legend Limited | Wholesale & retail | 2024 |
| TK4 Properties Ltd | Real estate | 2023 |
| TKL Coffee Limited | Wholesale & retail | 2018 |
| TKP Property Limited | Real estate | 2022 |
| Tkpm Limited | Administrative & support | 2014 |
| TKY Investments Ltd | Real estate | 2023 |
| TKY Wellbeing Ltd | Health & social care | 2018 |
| TM 100 Ltd | Manufacturing | 2007 |
| TMDEVELOPMENTS50 Ltd | Construction | 2020 |
| Tmgw Property Services Ltd. | Real estate | 2020 |
| TMT Corporate Solutions Ltd | Professional & scientific | 2009 |
| TNS Property Management Ltd | Real estate | 2023 |
| TO BE Supported Limited | Administrative & support | 2026 |
| TO LET Solihull Ltd | Real estate | 2008 |
| Tobitic Limited | Information & communication | 2017 |
| Together CSR Ltd | Professional & scientific | 2022 |
| Tohid Borhani Ltd | Real estate | 2025 |
| Tohum Limited | Hospitality | 2015 |
| Toki Agenda Limited | Information & communication | 2024 |
| Toky Robotics Limited | Professional & scientific | 2018 |
| Tokyo Chef Ltd | Manufacturing | 2025 |
| Tokyo Prints Ltd | Manufacturing | 2025 |
| Tolaini Welding Consultancy Ltd | Professional & scientific | 2018 |
| Toller & Clark Electrics Limited | Construction | 2025 |
| Toller & Clark Limited | Professional & scientific | 2009 |
| TOM Bains Limited | Real estate | 2017 |
| TOM Ross Media Services Limited | Information & communication | 2007 |
| Tomwroteit Limited | Professional & scientific | 2017 |
| Tony's Coffee Ltd | Hospitality | 2022 |
| Tooling Design Ltd | Professional & scientific | 2025 |
| Top Boys Designer Basement Ltd | Wholesale & retail | 2024 |
| Top Carpets Ltd | Wholesale & retail | 2020 |
| Top Cloud Logistics Ltd | Transport & logistics | 2020 |
| Top Dawg Gear Ltd | Manufacturing | 2026 |
| Top Fade Birmingham Ltd | Other services | 2025 |
| Top Flight Tutoring Ltd | Education | 2023 |
| Top Investor Limited | Wholesale & retail | 2012 |
| Top MAN Safety Limited | Other services | 2017 |
| Top Mode Ltd | Information & communication | 2024 |
| Top Recycle(Uk) Ltd | Wholesale & retail | 2023 |
| Top Right Ltd | Hospitality | 2015 |
| Top Spot Leads Limited | Wholesale & retail | 2014 |
| Top Tasty Pizza Ltd | Hospitality | 2023 |
| Torq Technical Clothing Ltd | Wholesale & retail | 2014 |
| Total Care Enterprise (GB) Ltd | Construction | 2025 |
| Total Care Medical (GB) Ltd | Health & social care | 2013 |
| Total Ecommerce Limited | Wholesale & retail | 2017 |
| Total Quality Management Ltd | Construction | 2025 |
| Total Refurb Alloys Ltd | Wholesale & retail | 2013 |
| Total Tiling FX Limited | Construction | 2013 |
| Total Tooling Solutions Ltd | Professional & scientific | 2025 |
| Totally Red Limited | Wholesale & retail | 2024 |
| Touch Recruitment Ltd | Administrative & support | 2010 |
| Touchapp Limited | Information & communication | 2012 |
| Touchip Limited | Information & communication | 2005 |
| Touchline Marking Systems Limited | Arts & recreation | 2004 |
| Touchstone Executive Limited | Administrative & support | 2009 |
| Touchstone Ltd | Information & communication | 2018 |
| Toufla Properties Ltd | Real estate | 2015 |
| Tourt Electrical Limited | Construction | 2021 |
| Tovey & Morris Limited | Extraterritorial | 1960 |
| Tower Heights Limited | Real estate | 2018 |
| Town Gate Residences Limited | Real estate | 2024 |
| Town House Residential Properties Limited | Real estate | 2019 |
| Toys 4 Life Ltd | Administrative & support | 2018 |
| TOYS4YOU Ltd | Wholesale & retail | 2021 |
| Tozer Group Limited | Administrative & support | 2023 |
| TPC Freehold Limited | Households | 2020 |
| TPD Consultancy Ltd | Professional & scientific | 2017 |
| TPFB17 Company Limited | Administrative & support | 2014 |
| TPJ Limited | Administrative & support | 2018 |
| TPM Roofing Ltd | Construction | 2016 |
| TPM Roofing Solutions Ltd | Construction | 2026 |
| Track Energy Data Ltd | Information & communication | 2015 |
| Tractor Guard Limited | Manufacturing | 2011 |
| Trader Coaching Academy Ltd | Education | 2008 |
| Traditional Joinery (Midlands) Limited | Administrative & support | 2008 |
| Traditional Old Motor Spares Limited | Wholesale & retail | 2014 |
| Traditional Traction Limited | Transport & logistics | 2005 |
| Train Your Menopause Limited | Health & social care | 2024 |
| Trakkif Ltd | Information & communication | 2015 |
| Tramdale Limited | | 1987 |