| Together Design Limited | Arts & recreation | 2005 |
| Together Everyone Achieves More Limited | Arts & recreation | 2008 |
| Together in Partnership Ltd | Health & social care | 2025 |
| Together Leicester | Health & social care | 2017 |
| Tokcast Limited | Information & communication | 2024 |
| Token Finishes Ltd | Construction | 2026 |
| Tokyo Associates Limited | Manufacturing | 2018 |
| Toll Bar Investments Ltd | Real estate | 2020 |
| Tollerton Accuracy Ltd | Transport & logistics | 2015 |
| Tollingtons Accountants Limited | Professional & scientific | 2005 |
| Tolomi Limited | Professional & scientific | 2011 |
| Tolvaddon Ltd | Transport & logistics | 2015 |
| TOM Bodicoat Creative Limited | Professional & scientific | 2019 |
| TOM Fisher Culinary Limited | Hospitality | 2020 |
| TOM Gerard Properties Ltd | Construction | 2024 |
| TOM JOE Ltd | Professional & scientific | 2020 |
| TOM Lawrence Limited | Other services | 2015 |
| TOM Logistics Ltd | Transport & logistics | 2014 |
| TOM Strist Limited | Wholesale & retail | 2024 |
| Tom-Capital Ltd | Financial services | 2026 |
| Tom-Trans Ltd | Transport & logistics | 2012 |
| Toma Estates Limited | Real estate | 2024 |
| Toma Holdings Limited | Financial services | 2025 |
| Tomas Dostal Limited | Professional & scientific | 2017 |
| Tomasz Kalinowski Transport Ltd | Transport & logistics | 2024 |
| Tomcas Consulting Limited | Information & communication | 2016 |
| Tomespan Ltd | Wholesale & retail | 2025 |
| Tomi Car Ltd | Wholesale & retail | 2017 |
| Tomlin Tackle Limited | Real estate | 1987 |
| Tomlinson Trustees Limited | Financial services | 2017 |
| Tommar Estates (Wells) Limited | Hospitality | 2018 |
| Tomorrows Opportunities CIC | Professional & scientific | 2021 |
| Tomorrowtogether Ltd | Financial services | 2010 |
| Tompkins Removals Limited | Professional & scientific | 1943 |
| Tomra Sorting Limited | Wholesale & retail | 2006 |
| Tomton Travels Limited | Extraterritorial | 2011 |
| Tone Consultancy Limited | Professional & scientific | 2012 |
| Toni Digital Ltd | Information & communication | 2026 |
| Tony Armstrong Limited | Wholesale & retail | 2024 |
| Tony Fadez Limited | Other services | 2019 |
| Tony Morris (Builders) Limited | Construction | 1977 |
| Tony's Tyre Services Ltd | Construction | 2026 |
| Tonyrefail Investments Ltd | Construction | 2025 |
| Toogood Training Limited | Education | 2016 |
| Tool DEN Hire Services Ltd | Wholesale & retail | 2020 |
| Tool Library Ltd | Extraterritorial | 2024 |
| Tool Terminal Limited | Wholesale & retail | 2019 |
| Tool Tradez Ltd | Wholesale & retail | 2024 |
| Tooling and Developments Limited | Manufacturing | 1962 |
| Tooling Units (Holdings) Limited | Manufacturing | 2009 |
| Tooling Units (Leicester) Limited | Manufacturing | 1966 |
| Tooling Units Properties Ltd | Real estate | 2026 |
| Tools to Go Limited | Wholesale & retail | 2002 |
| Toolshed Communications Limited | Professional & scientific | 2008 |
| Toolshop Direct Limited | Wholesale & retail | 2013 |
| Toolsmix Limited | Wholesale & retail | 2025 |
| Toolsupply Limited | Manufacturing | 2009 |
| Toonzardcollects Ltd | Wholesale & retail | 2025 |
| Toor Pharma Limited | Financial services | 2023 |
| Toor Solutions Limited | Information & communication | 2007 |
| Toothdrt Ltd | Other services | 2022 |
| Toots and the Pebbles Ltd | Real estate | 2023 |
| Top 8 Fashion Limited | Manufacturing | 2016 |
| Top Bakery UK Ltd | Manufacturing | 2025 |
| Top Brands Wholesale & Retail Ltd | Wholesale & retail | 2026 |
| Top Cars Enterprise Ltd | Wholesale & retail | 2025 |
| Top Carwash Leicester Ltd | Administrative & support | 2024 |
| Top Catering Center Limited | Hospitality | 2021 |
| Top Class Carwash Leics Ltd | Administrative & support | 2025 |
| Top Class Carwash Ltd | Wholesale & retail | 2021 |
| Top CUT Abbey Lane Ltd | Other services | 2023 |
| Top CUT Tree Care Limited | Administrative & support | 2025 |
| Top Cutz Leicester Ltd | Other services | 2023 |
| Top Daily Caffe Limited | Hospitality | 2018 |
| Top Dog Advertising Limited | Professional & scientific | 1997 |
| Top END Street Limited | Wholesale & retail | 2017 |
| Top Fabrics Limited | Wholesale & retail | 2016 |
| Top Fashion (Leic) Ltd. | Manufacturing | 2014 |
| Top Fashions Leicester Limited | Wholesale & retail | 2022 |
| Top Floor Scaffolding Ltd | Construction | 2022 |
| Top Governor Ltd | Health & social care | 2024 |
| Top Grocery Shop 7/24 Ltd | Wholesale & retail | 2026 |
| Top GUN Body Shop & Customs Ltd | Wholesale & retail | 2022 |
| Top HAT Ltd | Financial services | 2018 |
| Top IT Toppers Ltd | Wholesale & retail | 2024 |
| Top Line Roofing & Building Leicester Ltd | Manufacturing | 2025 |
| Top Move Ltd | Real estate | 2009 |
| Top Nosh Catering Services Ltd | Hospitality | 2025 |
| Top Point Consulting Ltd | Information & communication | 2017 |
| Top Revs Media Limited | Professional & scientific | 2025 |
| Top SEE Ltd | Wholesale & retail | 2024 |
| Top Shop & Snack Ltd | Wholesale & retail | 2025 |
| Top Shop 2 Limited | Wholesale & retail | 2025 |
| Top Spirits Ltd | Wholesale & retail | 2012 |
| Top Style Creators Ltd | Wholesale & retail | 2023 |
| Top Teachers Online Ltd | Education | 2019 |
| Top Tech Trade Ltd | Wholesale & retail | 2015 |
| Top TEN Clothing Ltd | Manufacturing | 2025 |
| Top Tier Chauffeurs Ltd | Transport & logistics | 2024 |
| Top Tier Clothing Ltd | Wholesale & retail | 2020 |