| Tarkwa Investment Limited | Financial services | 2016 |
| Tarlton Tiling Company Limited | Construction | 2005 |
| Taroa Limited | Professional & scientific | 2025 |
| Taros Foods Ltd | Hospitality | 2019 |
| Tarry Holdings Limited | Financial services | 2020 |
| Tarry Properties Ltd | Real estate | 2013 |
| Tarry Residential Ltd | Real estate | 2013 |
| TAS Meat Wholesalers Ltd | Wholesale & retail | 2025 |
| Tascol Shore Engineering Limited | Manufacturing | 2001 |
| Tash Pennant Consultancy Ltd | Professional & scientific | 2012 |
| Tasha Kelly Properties Ltd | Real estate | 2021 |
| Task Rentals Ltd | Households | 2026 |
| Task Zero Systems Ltd | Information & communication | 2026 |
| Tassuw UK Ltd | Wholesale & retail | 2024 |
| Taste Kurdish Food Ltd | Hospitality | 2019 |
| Taste NC Limited | Hospitality | 2024 |
| Taste of India Restaurant Ltd | Hospitality | 2023 |
| Taste of Kashmir (Notts) Ltd | Hospitality | 2026 |
| Taste of Kashmir Netherfield Ltd | Hospitality | 2025 |
| Taste of Nations Limited | Wholesale & retail | 2024 |
| Taste of the Balkans Limited | Wholesale & retail | 2025 |
| Taste of the Tropics UK Ltd | Wholesale & retail | 2025 |
| Tasty Corner (Fast N Fresh) Ltd | Hospitality | 2021 |
| Tasty Paradise Limited | Hospitality | 2024 |
| Tasty Sandwich Ltd | Hospitality | 2023 |
| Tastybites Nottingham Ltd | Hospitality | 2024 |
| Tate Housing Nottingham CIC | Real estate | 2024 |
| Tatewag PVT Ltd | Health & social care | 2022 |
| Tatham Business Services Ltd | Transport & logistics | 2009 |
| Tatham Studio Ltd | Administrative & support | 2019 |
| Tatham's Gym & Fitness Ltd | Arts & recreation | 2020 |
| Tatia Services Ltd | Health & social care | 2022 |
| Tattenhall Care Village LLP | | 2014 |
| Tattershalls Ltd | Real estate | 2016 |
| Tattooadmin Limited | Information & communication | 2025 |
| Taunton V.E. Limited | Other services | 1996 |
| Taurage Midco Limited | Financial services | 2026 |
| Taurus BIO Nature Limited | Professional & scientific | 2012 |
| Taurus Building Services Limited | Wholesale & retail | 1986 |
| Taurusnova Ltd | Real estate | 2025 |
| TAV Safety& Management Services Ltd | Professional & scientific | 2025 |
| Tavernor Limited | Wholesale & retail | 2025 |
| Tavistock Court Properties Limited | Real estate | 2016 |
| Tavistock Court RTM Company Limited | Households | 2011 |
| Tavistock Freehold Limited | Real estate | 2024 |
| Tax MAG Ltd | Professional & scientific | 2022 |
| Taxation Ltd | Professional & scientific | 2023 |
| Taxi and Vehicle Services Ltd | Professional & scientific | 2025 |
| Taxi Car Parts and Accessories Ltd | Administrative & support | 2018 |
| Taxora Ltd | Professional & scientific | 2024 |
| Taye DEE Limited | Professional & scientific | 2025 |
| Taygon Ltd | Real estate | 2023 |
| Tayla Maid Ltd | Administrative & support | 2018 |
| Taylor Abode Ltd | Real estate | 2023 |
| Taylor and Jones Emporium Limited | Wholesale & retail | 2015 |
| Taylor Birch Projects Ltd | Construction | 2026 |
| Taylor Commercial Automotive Ltd | Wholesale & retail | 2022 |
| Taylor Dawson Plumb Limited | Professional & scientific | 2010 |
| Taylor Education & Training C.I.C. | Extraterritorial | 2013 |
| Taylor Hair Limited | Other services | 2023 |
| Taylor J Property Ltd | Households | 2022 |
| Taylor Lifts Limited | Construction | 2008 |
| Taylor Made Cricket and Hockey Limited | Administrative & support | 2003 |
| Taylor Made Futures Ltd | Education | 2024 |
| Taylor Made Videography Limited | Information & communication | 2022 |
| Taylor Mammon and Nathan Limited | Wholesale & retail | 2018 |
| Taylor Mcgill Financial Services Limited | Financial services | 2003 |
| Taylor Morris London Ltd | Wholesale & retail | 2019 |
| Taylor Properties (Erewash) Limited | Real estate | 2024 |
| Taylor Sherwood Education Limited | Real estate | 2025 |
| Taylor-Guy Limited | Professional & scientific | 2014 |
| Taylor-Hutchinson Ltd | Professional & scientific | 2016 |
| Taylor-Made Design & Fabrication Ltd | Manufacturing | 2019 |
| Taylormade Projects Limited | Professional & scientific | 1998 |
| Taylors Car Company Limited | Wholesale & retail | 2017 |
| Taylors Croft Management Company Limited | Households | 1994 |
| Taylors Holdings UK Limited | Financial services | 2023 |
| Taylors Shoes Limited | Wholesale & retail | 2019 |
| Tayton Properties Ltd | Real estate | 2023 |
| Tayyib Foundation | Other services | 2010 |
| Tazimar Limited | Professional & scientific | 2012 |
| Tazv Limited | Professional & scientific | 2018 |
| TB & PK Properties Limited | Real estate | 2020 |
| TB General Construction Ltd | Manufacturing | 2018 |
| TB International UK Ltd | Wholesale & retail | 2021 |
| TB NO 12 Ltd | Wholesale & retail | 2026 |
| TB Russell Limited | Professional & scientific | 2022 |
| Tbac Consultants Limited | Administrative & support | 2017 |
| TBB Traders Ltd | Wholesale & retail | 2025 |
| TBC Tools Limited | Wholesale & retail | 2019 |
| TBC. Streetwear Ltd | Manufacturing | 2025 |
| Tbdetermind Ltd | Other services | 2024 |
| Tbduk Limited | Financial services | 2018 |
| TBH Bootcamps Ltd | Health & social care | 2021 |
| TBH Recruitment Limited | Professional & scientific | 2011 |
| TBM Van Hire Services Ltd | Transport & logistics | 2022 |
| Tbmp Ltd | Financial services | 2022 |
| Tbng Property Limited | Real estate | 2022 |
| Tbob Rail Ltd | Construction | 2019 |
| Tbone Productions Ltd | Manufacturing | 2023 |