| Tabelle Limited | Health & social care | 2022 |
| Tactical Change Management Limited | Professional & scientific | 2013 |
| Taekni Solutions Ltd | Information & communication | 2023 |
| TAF (Ipswich) Limited | Construction | 2011 |
| Taft Business Management Limited | Professional & scientific | 2020 |
| Taharoq Healthcare Limited | Health & social care | 2026 |
| Tailor Property Solutions Limited | Real estate | 2026 |
| Tailor Your Holiday Ltd | Administrative & support | 2018 |
| Tails UP Bait Limited | Wholesale & retail | 2006 |
| Tait Resourcing Services Limited | Extraterritorial | 2023 |
| TAJ Travels and Tours UK Ltd | Administrative & support | 2023 |
| Tajir Vault Ltd | Wholesale & retail | 2025 |
| Takayama (EN) Ltd | Hospitality | 2018 |
| Take Point Fitness Ltd | Information & communication | 2026 |
| Takeawaytaxi Limited | Hospitality | 2011 |
| Talent Cast Recruitment Limited | Administrative & support | 2025 |
| Talent Pool IO Ltd | Information & communication | 2022 |
| Talented Limited | Real estate | 1990 |
| Talentshift HR Limited | Administrative & support | 2018 |
| Talida Ltd | Wholesale & retail | 2019 |
| Taliru Limited | Wholesale & retail | 2024 |
| Talitha Koum Community Ltd | Health & social care | 2010 |
| Talking Tots Limited | Education | 2007 |
| Tally M E Ventures Limited | Public administration | 2025 |
| Talvy NAD Ltd | Information & communication | 2024 |
| Tamboerskloof Logistics Limited | Transport & logistics | 2026 |
| Tamera Properties Limited | Construction | 2026 |
| Tameridge Limited | Construction | 2014 |
| Tammie Bloome Homes Ltd | Construction | 2017 |
| Tammie Holdings Ltd | Construction | 2017 |
| Tammie Homes Ltd | Construction | 2015 |
| Tammie Investments Ltd | Real estate | 2018 |
| TAN Technologies Ltd | Administrative & support | 2025 |
| TAN Wright Ltd | Other services | 2024 |
| TAN Wright Tanning & Beauty Ltd | Other services | 2026 |
| Tangerine Lights Ltd | Professional & scientific | 2017 |
| Tangley International Limited | Administrative & support | 1996 |
| Tankard Homes Ltd | Real estate | 2020 |
| Tanla Limited | Hospitality | 2023 |
| Tanners Quarter (North Walsham) Management Company Limited | Households | 2026 |
| Tantalic Engineering Limited | | 1988 |
| Tantaz Ltd | Wholesale & retail | 2010 |
| Tanvi Blue Ltd | Wholesale & retail | 2023 |
| Tapa Homes Ltd | Real estate | 2025 |
| Tapas Software Limited | Information & communication | 2019 |
| Tapestry Design Studios Limited | Administrative & support | 2016 |
| Taplow Ltd | Real estate | 2017 |
| Tappincam LP | | 2023 |
| TAQ Consulting Group Ltd | Professional & scientific | 2023 |
| Tardis Freight Ltd | Transport & logistics | 2020 |
| Tari Care 24HRS Ltd | Health & social care | 2019 |
| Taska Marine Limited | Administrative & support | 2010 |
| Taskoris Structured Logic Limited | Wholesale & retail | 2026 |
| Tastebuds (Suffolk) Ltd | Hospitality | 2024 |
| Tastee Burrito Ltd | Hospitality | 2022 |
| Tasty Foodies Limited | Hospitality | 2023 |
| TAT Contracting Ltd | Transport & logistics | 2024 |
| Tatan Ltd | Real estate | 2021 |
| Tatarchik Limited | Construction | 2026 |
| Tate Hair and Beauty Ltd | Other services | 2023 |
| Tate Heating and Green Energy Ltd. | Construction | 2007 |
| Taters Gonna Tate Ltd | Hospitality | 2023 |
| Tates Properties Limited | Construction | 2025 |
| Tates Transport Ltd | Transport & logistics | 2022 |
| Taurance Ltd | Information & communication | 2025 |
| Tavi Transport Ltd | Administrative & support | 2015 |
| Tawai Consulting Ltd | Professional & scientific | 2026 |
| Tax Check Pro Ltd | Professional & scientific | 2025 |
| Tax Rebates Limited | Professional & scientific | 2013 |
| Taxreads Limited | Administrative & support | 2023 |
| Tay-Dal Surfacing Limited | Construction | 2000 |
| Taylor Estates East Limited | Real estate | 2015 |
| Taylor Freezer (UK) Limited | Professional & scientific | 2013 |
| Taylor Harrow Ltd | Information & communication | 2025 |
| Taylor Investments (Bildeston) Limited | Real estate | 1961 |
| Taylor Lawns Ltd | Real estate | 2024 |
| Taylor Made Interiors Limited | Administrative & support | 2002 |
| Taylor Properties (Wivenhoe) Limited | Construction | 1982 |
| Taylor Ward Ltd | Financial services | 2019 |
| Taylor-Maid Catering Limited | Hospitality | 2010 |
| Taylors Flooring and Furniture Limited | Wholesale & retail | 2019 |
| Taylors PTY Limited | Real estate | 2018 |
| TB M&E Services Ltd | Manufacturing | 2012 |
| TBC Drinks Ltd | Construction | 2020 |
| TBC Transport Ltd | Transport & logistics | 2020 |
| TBF Events Limited | Arts & recreation | 2006 |
| Tbigas & Sons Ltd | Transport & logistics | 2016 |
| TBS East Anglia Limited | Other services | 2019 |
| TCA Tech Limited | Manufacturing | 2025 |
| TCB Electrical East Anglia Ltd | Energy | 2010 |
| TCQ Project Management Ltd | Information & communication | 2016 |
| TCS Consulting Group Ltd | Professional & scientific | 2025 |
| TCU Health Limited | Health & social care | 2026 |
| TD Build & Development Limited | Construction | 2026 |
| TD Developments Holdings Limited | Financial services | 2026 |
| TD Sports Management Limited | Arts & recreation | 2018 |
| TDJ Transport Ltd | Transport & logistics | 2010 |
| TDM Trans Ltd | Transport & logistics | 2019 |
| Tdpplus Ltd | Hospitality | 2024 |
| TDS Smart Services Ltd | Transport & logistics | 2026 |