| Taps Management Ltd | Professional & scientific | 2018 |
| Taqi Global Limited | Administrative & support | 2024 |
| Taqwa Thobes Ltd | Wholesale & retail | 2025 |
| Taqwah Properties Ltd | Real estate | 2023 |
| Tara & Sons Ltd | Real estate | 2024 |
| Tara Court Residents Association Limited | Households | 2002 |
| Tara Incorporated Ltd | Transport & logistics | 2024 |
| Tara's Hair & Beauty Ltd | Wholesale & retail | 2023 |
| Tarans Group Ltd | Construction | 2018 |
| Tarasik Therapy Ltd | Health & social care | 2018 |
| TARBIYAH360 Solutions Ltd | Professional & scientific | 2024 |
| Targetvast Ltd | Wholesale & retail | 2024 |
| Tarh Ltd | Construction | 2019 |
| Tari Properties Ltd | Real estate | 2025 |
| Tariq Halal Meat (Fulham) Ltd | Wholesale & retail | 2014 |
| Tariq Halal Meat (Hounslow) Ltd | Wholesale & retail | 2013 |
| Tariq Halal Meat (Leasing) Limited | Administrative & support | 2014 |
| Tariq Halal Meat (Leyton) Ltd | Wholesale & retail | 2012 |
| Tariq Halal Meat (Streatham) Ltd | Wholesale & retail | 2013 |
| Tariq Halal Meat Franchise Limited | Wholesale & retail | 2011 |
| Tariq Investments Ltd | Other services | 2013 |
| Tariqmedical Ltd | Health & social care | 2023 |
| Tarotqa Ltd | Wholesale & retail | 2025 |
| Tarra Project Ltd | Construction | 2019 |
| Tarrant Cohen Ltd | Professional & scientific | 2011 |
| Tarun Construction Ltd | Construction | 2020 |
| TAS Centre Limited | Education | 2016 |
| Tasa Services Ltd | Administrative & support | 2017 |
| Tase Trading Limited | Construction | 2022 |
| Tash Taxi Ltd | Administrative & support | 2018 |
| Tash UK Services Limited | Transport & logistics | 2021 |
| Tasheel Limited | Real estate | 2023 |
| Tashfeen Ltd | Wholesale & retail | 2024 |
| Task Health Care Limited | Health & social care | 2017 |
| Task Heroes Solutions Ltd | Transport & logistics | 2025 |
| Task IQ Limited | Information & communication | 2016 |
| Tasked & Co. Ltd | Administrative & support | 2025 |
| Taskman Ltd | Construction | 2014 |
| Taskra Labs Ltd | Information & communication | 2024 |
| Tasrah Limited | Wholesale & retail | 2025 |
| Taste of Anna Food Ltd | Hospitality | 2025 |
| Taste of India Pure Vegetarian (U.K) Limited | Hospitality | 2024 |
| Taste of Khorasan Ltd | Hospitality | 2026 |
| Tastee Singh Limited | Hospitality | 2023 |
| Tasteglace Ltd | Manufacturing | 2026 |
| Tasty Chicken (SK) Ltd | Hospitality | 2026 |
| Tasty Grill Chicken Ltd | Hospitality | 2024 |
| Tasty MIX Chicken Limited | Hospitality | 2025 |
| Tasvir Construction Ltd | Construction | 2022 |
| Tatulis Traders Ltd | Administrative & support | 2022 |
| Tatva Ltd | Manufacturing | 2017 |
| Tau-Gen Ltd | Other services | 2024 |
| Tauhaza Ltd | Wholesale & retail | 2025 |
| Tauqeer&Co Limited | Wholesale & retail | 2026 |
| Taurean Carpenters Limited | Construction | 1997 |
| Taurus Bike Gear Ltd | Wholesale & retail | 2026 |
| Taurus Investment Advisors Ltd | Professional & scientific | 2016 |
| Tauva Limited | Professional & scientific | 2003 |
| Tava Fish Ltd | Hospitality | 2025 |
| Tawa Grill Delivery Ltd | Hospitality | 2024 |
| Tawa Grill Limited | Hospitality | 2023 |
| Tawa Services Limited | Information & communication | 2018 |
| Tawaf Ltd | Hospitality | 2023 |
| Tawakal AK Properties Limited | Real estate | 2026 |
| Tawakcool Adventures CIC | Other services | 2023 |
| Tawheed Motors Ltd | Other services | 2023 |
| Tax & Management Accountants Ltd | Professional & scientific | 2018 |
| Tax Buddies U.K Ltd | Wholesale & retail | 2024 |
| Tax Digital Plus Limited | Professional & scientific | 2017 |
| Tax Direct (Payroll) Ltd | Professional & scientific | 2017 |
| Tax Direct Limited | Professional & scientific | 2008 |
| Tax Gentlemen LLP | | 2024 |
| Tax Giant Limited | Professional & scientific | 2013 |
| Tax Maths Limited | Professional & scientific | 2015 |
| Tax Resolute Limited | Professional & scientific | 2015 |
| Taxapp Solutions Ltd | Information & communication | 2022 |
| Taxassistance Solution Ltd | Professional & scientific | 2024 |
| Taxbooks Consulting Ltd | Professional & scientific | 2023 |
| Taxcare Accountancy Limited | Professional & scientific | 2014 |
| Taxclaim Accountants Ltd | Professional & scientific | 2017 |
| Taxescu Ltd | Professional & scientific | 2026 |
| Taxexpress UK Ltd. | Professional & scientific | 2008 |
| Taxhelp Accountants Ltd | Professional & scientific | 2018 |
| Taxi Irie Limited | Transport & logistics | 2016 |
| Taxi to the Airport Ltd | Transport & logistics | 2014 |
| Taxila Limited | Wholesale & retail | 2021 |
| Taxminds Solutions Ltd | Professional & scientific | 2025 |
| Taxo Accountancy Limited | Professional & scientific | 2024 |
| Taxplus Accounting Ltd | Professional & scientific | 2021 |
| Taxrefundpro Limited | Professional & scientific | 2021 |
| Taxwise Accounts Specialists Limited | Professional & scientific | 2010 |
| Taxzact Limited | Professional & scientific | 2014 |
| Taycan Security Group Ltd | Administrative & support | 2022 |
| Tayform Limited | Hospitality | 2005 |
| Tayibah Limited | Wholesale & retail | 2020 |
| Taylors Furniture Outlet Ltd | Wholesale & retail | 2019 |
| Tayyab Traders London Limited | Wholesale & retail | 2023 |
| Tayyaba Design and Decorate Ltd | Construction | 2021 |
| TAZ & Co Services (UK) Limited | Wholesale & retail | 2025 |
| TAZ Consultants Limited | Professional & scientific | 2025 |