| Taste of Kenya Group Ltd | Manufacturing | 2020 |
| Tasty Curry Foods Limited | Hospitality | 2023 |
| Tasty Curry Takeaway Ltd | Hospitality | 2016 |
| Tasveer International Limited | Wholesale & retail | 2025 |
| Tatarasanu Limited | Transport & logistics | 2017 |
| Tate Mews Residents Association Limited | Households | 1984 |
| Tattymarbots Limited | Information & communication | 2013 |
| Tauk Swanwick Ltd Ltd | Real estate | 2025 |
| Taurus Contractors Ltd | Construction | 2018 |
| Tavato Limited | Professional & scientific | 2013 |
| Tavendruce Ltd | Construction | 2022 |
| Tawadrous Medical Services Ltd | Health & social care | 2025 |
| Tawheed Sweets Ltd | Manufacturing | 2024 |
| Tax Forensic Limited | Professional & scientific | 2023 |
| Tax Unravelled Limited | Professional & scientific | 2010 |
| Taxagentia Limited | Real estate | 2012 |
| Taxi Couple Limited | Transport & logistics | 2020 |
| Taxi Extra Limited | Wholesale & retail | 2024 |
| Taxi Service Southampton Limited | Transport & logistics | 2026 |
| Taxi Shack Limited | Manufacturing | 2019 |
| Taxis Southampton 1 Ltd | Transport & logistics | 2026 |
| Taxpage Limited | Professional & scientific | 2022 |
| Taxworks (Southern) Limited | Professional & scientific | 2011 |
| Taylor Carpenters Limited | Manufacturing | 2026 |
| Taylor Carpentry and Installation Limited | Construction | 2005 |
| Taylor Family Law Limited | Professional & scientific | 2026 |
| Taylor Hill & Bond (Andover) Ltd | Real estate | 2020 |
| Taylor Hill & Bond (Land & New Homes) Ltd | Real estate | 2018 |
| Taylor Hill & Bond (Management) Ltd | Real estate | 2020 |
| Taylor Hill & Bond (Park Gate) Ltd | Real estate | 2019 |
| Taylor Hill & Bond (Romsey) Ltd | Real estate | 2018 |
| Taylor Hill and Bond ( Portsmouth ) Limited | Real estate | 2021 |
| Taylor Hill and Bond (Titchfield) Ltd | Real estate | 2017 |
| Taylor Jones Installations Ltd | Other services | 2017 |
| Taylor Tipton Limited | Wholesale & retail | 2014 |
| Taylor's Accounting Solutions Ltd | Professional & scientific | 2018 |
| Taylormade Plumbing and Heating Ltd | Construction | 2016 |
| Taylormade Yachting Limited | Administrative & support | 2015 |
| Taylors Traditional Innkeepers Limited | Hospitality | 2010 |
| Tazza Takeaway Limited | Hospitality | 2024 |
| TB Flooring Ltd | Construction | 2026 |
| TBF Solutions Ltd | Wholesale & retail | 2024 |
| Tbpoyd Limited | Real estate | 2022 |
| TBR Consultancy Ltd | Information & communication | 2025 |
| TBT Accountancy Limited | Administrative & support | 2014 |
| TBW Accountancy Limited | Professional & scientific | 2014 |
| TC Bitterne Ltd | Other services | 2019 |
| TC Bursledon Ltd | Other services | 2025 |
| TC Classic Ltd | Other services | 2020 |
| TC Fareham Ltd | Other services | 2020 |
| TC Hand Car Wash Ltd | Administrative & support | 2024 |
| TC Hythe Ltd | Other services | 2019 |
| TC Mcclatchey Plumbing & Heating Limited | Construction | 2011 |
| TC Online Limited | Wholesale & retail | 2024 |
| TC Park Gate Ltd | Other services | 2022 |
| TC Warsash Ltd | Other services | 2024 |
| TC Whiteley Ltd | Other services | 2022 |
| Tc-Uk Internet Security Limited | Information & communication | 2014 |
| Tcal Ltd | Hospitality | 2019 |
| TCB Sports Ltd | Arts & recreation | 2024 |
| TCC Salon Ltd | Other services | 2010 |
| TCC Southampton Limited | Transport & logistics | 2022 |
| TCG Transport Limited | Transport & logistics | 2018 |
| Tcgdex Ltd | Wholesale & retail | 2026 |
| Tcin Property Limited | Financial services | 2004 |
| TCJ Consulting Limited | Information & communication | 2013 |
| Tcjd Holdings Limited | Financial services | 2022 |
| TCK Plastering Ltd | Construction | 2026 |
| TCW Electrical Ltd | Construction | 2018 |
| TD8 Marketing Group Ltd | Transport & logistics | 2026 |
| TDA Capital Ltd | Professional & scientific | 2012 |
| Tdcb Group Ltd | Information & communication | 2026 |
| Tdgaccountancy Ltd | Professional & scientific | 2023 |
| TDK Tradeframes Ltd | Construction | 2016 |
| TDR Carpentry Ltd | Construction | 2012 |
| TDR Construction and Development Ltd | Construction | 2025 |
| Tdstyle Ltd | Wholesale & retail | 2003 |
| TE- Tech Process Solutions Limited | Manufacturing | 2020 |
| Te-Tech Limited | Construction | 2020 |
| Teach ME Mills Ltd | Education | 2024 |
| Teachers Group Educational Trust | Administrative & support | 2006 |
| Teaco Holdings Ltd | Financial services | 2026 |
| Teaco Ltd | Real estate | 2026 |
| Teal Flowers Group Ltd | Financial services | 2022 |
| Teal Tiffin Limited | Hospitality | 2023 |
| Teals Day Provision Limited | Health & social care | 2017 |
| Team 2 Property Management Limited | Households | 2010 |
| Team B&C Limited | Financial services | 2021 |
| Team Clark Stables Ltd | Agriculture & fishing | 2023 |
| Team Mellor Ltd | Real estate | 2026 |
| Team Nero Limited | Professional & scientific | 2005 |
| Team One Engineering Ltd. | Professional & scientific | 2010 |
| Team One Group Limited | Professional & scientific | 2017 |
| Team Purple Limited | Administrative & support | 2003 |
| Team Sailing Limited | Arts & recreation | 2009 |
| Team Security Services UK Limited | Administrative & support | 2015 |
| Team Solent Kestrels CIC | Arts & recreation | 2023 |
| Team Spirit ALL Stars Dance Academy Ltd | Arts & recreation | 2024 |
| Team Spirit DC Limited | Arts & recreation | 2017 |
| Teamblockchain Limited | Professional & scientific | 2017 |