| Sytner Limited | Wholesale & retail | 1964 |
| Sytner London Limited | Wholesale & retail | 1989 |
| Sytner Properties (Grove Park) Limited | Real estate | 2004 |
| Sytner Properties Limited | Real estate | 1998 |
| Sytner Sheffield Limited | Wholesale & retail | 1932 |
| Sytner Vehicles Limited | Wholesale & retail | 1998 |
| T M Lifting Equipment Limited | Other services | 2005 |
| T. Watts Properties Limited | Real estate | 2002 |
| T. Watts Scrap Metal Merchants Limited | Wholesale & retail | 2002 |
| T. Watts Waste Limited | Water & waste | 2002 |
| T.H.W. Consultancy Limited | Professional & scientific | 2005 |
| T.P.R. Limited | Manufacturing | 1992 |
| T.W.Kempton (Corporate Clothing) Limited | Manufacturing | 1989 |
| T4I Engineering Ltd | Professional & scientific | 2014 |
| Taibeet Ltd | Administrative & support | 2007 |
| Tariffology Limited | Professional & scientific | 2003 |
| Tcpizza Limited | Hospitality | 2019 |
| TECH4I2 Limited | Professional & scientific | 2000 |
| Technical Solutions (Engineering Services) Limited | Administrative & support | 2007 |
| Tedxleicester Ltd | Administrative & support | 2022 |
| Telecomshop Limited | Information & communication | 2008 |
| Thai-Tanium Thai Boxing Club Limited | Education | 2022 |
| Thamaraat Trading Ltd | Wholesale & retail | 2026 |
| THE Album Company (Leicester) Limited | Manufacturing | 2014 |
| THE Bay Tree Food Co Limited | Manufacturing | 2008 |
| THE Beauty Sanctuary Leicester Ltd | Other services | 2023 |
| THE Berber Shop Limited | Wholesale & retail | 2004 |
| THE Billesdon Community Postal Service | Wholesale & retail | 2003 |
| THE Blythin Lewis Picton Group Limited | Financial services | 2020 |
| THE Brunel Business Park Management Company Limited | Real estate | 2004 |
| THE Cotton Mill (Leicester) RTM Company Limited | Households | 2006 |
| THE Dent Brothers Limited | Wholesale & retail | 2006 |
| THE DH Nursery Limited | Education | 2003 |
| THE Electronic Gadget Co. Limited | Information & communication | 1999 |
| THE EYE F.M. Limited | Information & communication | 2005 |
| THE Foodfinders Limited | Wholesale & retail | 2002 |
| THE FOX & Hounds (Heacham) Ltd | Hospitality | 2004 |
| THE Future IS... Limited | Professional & scientific | 2007 |
| THE Heart Rhythm Clinic Ltd | Health & social care | 2023 |
| THE Insightful Co Limited | Other services | 2022 |
| THE Islamic Establishment Limited | Wholesale & retail | 2004 |
| THE Kilworth House Hotel and Theatre LLP | | 2025 |
| THE Kitchen Range Cookshop Ltd | Wholesale & retail | 2004 |
| THE Knightthorpe Management Company Limited | Households | 1987 |
| THE Lawns Management Company (Hinckley) Limited | Households | 2004 |
| THE Leicester Asian Youth Association Limited | Professional & scientific | 2003 |
| THE Leys (Burbage) Management Company Limited | Households | 2003 |
| THE Old School House (Fosse Road South) Management Limited | Households | 1998 |
| THE Paddocks Doggy Daycare Ltd | Other services | 2023 |
| THE Powerful MAN Investments UK Ltd | Professional & scientific | 2022 |
| THE Powerful MAN Ltd | Education | 2014 |
| THE Relationships Centre Leicestershire Ltd | Health & social care | 2004 |
| THE Retreat (Market Harborough) Limited | Other services | 2007 |
| THE Rolleston Hall Estates Limited | Agriculture & fishing | 1995 |
| THE Ross Welton Practice Ltd | Professional & scientific | 2020 |
| THE Routen Partnership | | 1991 |
| THE Shoe Business Limited | Wholesale & retail | 2003 |
| THE Springboard Business Centre Ltd | Administrative & support | 1985 |
| THE Telecoms Audit Bureau Limited | Information & communication | 2003 |
| THE Towers Partnership | | 2003 |
| THE Travel Snob Ltd | Administrative & support | 2016 |
| THE Travel Team Ltd | Transport & logistics | 2001 |
| THE U Foundation Limited | Other services | 2005 |
| THE Voltage Company Limited | Manufacturing | 2002 |
| THE Wallace Steel Group Limited | Financial services | 2019 |
| Thomas Burton Developments Limited | Construction | 1992 |
| Thomas Grant & Company Limited | Financial services | 1993 |
| Thomas Grant & Company Nominees Limited | Financial services | 1993 |
| Thorndyke Building Services Limited | Construction | 2006 |
| Thorpe Butler Limited | Extraterritorial | 1985 |
| TIM Clare Consultancy Ltd | Health & social care | 2020 |
| TIM Norton Motor Services Ltd | Wholesale & retail | 1975 |
| Timber Team (Machinery) Limited | Manufacturing | 1996 |
| Timber Yard Direct Limited | Wholesale & retail | 2025 |
| Timmel Ltd | Financial services | 2022 |
| Tinyminy Ltd | Wholesale & retail | 2022 |
| Tobias Management Company Limited | Real estate | 2006 |
| Tomlinson Limited | Manufacturing | 1987 |
| Toniscott Holdings Limited | Wholesale & retail | 1979 |
| Tony Hickling Limited | Extraterritorial | 2012 |
| Top Gear (Services) Limited | Wholesale & retail | 2007 |
| Topkapi Interiors Ltd | Administrative & support | 2003 |
| Total Commtech Ltd | Information & communication | 2014 |
| Total Machine Tool Technology Limited | Wholesale & retail | 2003 |
| Total Maintenance Services UK Limited | Construction | 1998 |
| Totally Trees Limited | Agriculture & fishing | 2003 |
| Toyota Logistics Services GB Ltd | Transport & logistics | 2003 |
| Transcare Associates Ltd | Transport & logistics | 2005 |
| Trinity Court (Hinckley) Limited | Households | 1999 |
| Trustfore Finance Limited | Financial services | 1981 |
| Trutel Limited | Wholesale & retail | 1985 |
| Tubtrugs Limited | Extraterritorial | 2003 |
| Tudor Rose Holdings Limited | Information & communication | 1997 |
| Tunnicliff Engineering Company Limited | Manufacturing | 1956 |
| Turry LOG Limited | Construction | 2015 |
| Type One Locomotive Company Limited | Administrative & support | 2000 |
| U.K. Pressure Washers Limited | Manufacturing | 2003 |
| UK Investment Property Services Ltd | Real estate | 2004 |
| UK Sash Window Specialist Ltd | Construction | 2020 |
| Ultimex Investment Partners Limited Partnership | | 2001 |