| Tooling and Equipment Engineers Limited | Professional & scientific | 2002 |
| Tools of the Trade Limited | Wholesale & retail | 1989 |
| Toolsnextday Limited | Extraterritorial | 2001 |
| Top Car Parts Ltd | Water & waste | 2024 |
| Topgrade Security Systems Limited | Construction | 2004 |
| Topps Housekeeping Service's Ltd | Other services | 2018 |
| Topshine Jewelry Co., Ltd | Manufacturing | 2024 |
| Total Ironwork Supplies Limited | Arts & recreation | 2007 |
| Total Roof Control Limited | Construction | 1994 |
| Toucan Testing Ltd | Professional & scientific | 2011 |
| Tourhopers Ltd | Administrative & support | 2026 |
| Towcraft Limited | Wholesale & retail | 1999 |
| Towerglens Limited | Manufacturing | 1979 |
| Towerglens Technology Limited | Manufacturing | 2002 |
| Tozer Electrical Services Limited | Construction | 2000 |
| TR Global Direct Ltd | Wholesale & retail | 2024 |
| Tradar Ltd | Administrative & support | 2025 |
| Trade Matrix Ltd | Wholesale & retail | 2024 |
| Trailways Limited | Wholesale & retail | 1996 |
| Transatlantic Information Services Ltd | Information & communication | 2026 |
| Transit Point Ltd. | Professional & scientific | 1998 |
| Travel Ride Group Ltd | Wholesale & retail | 2001 |
| Trevelyan (Sutton Coldfield) Limited | Wholesale & retail | 1986 |
| Trevone Limited | Wholesale & retail | 1990 |
| Tri-Freight Limited | Transport & logistics | 1993 |
| Tri-Phase Business Solutions Limited | Professional & scientific | 2004 |
| Tricklicks Limited | Wholesale & retail | 2005 |
| Trinity Property Sales Ltd | Real estate | 2006 |
| Troja Film Limited | Administrative & support | 2005 |
| Tromark Limited | Administrative & support | 2003 |
| Trophy Distributors UK Limited | Wholesale & retail | 1980 |
| TRS Accountancy Limited | Professional & scientific | 2002 |
| Trubor Engineering Company Limited | Manufacturing | 2006 |
| Tsnm Limited | Wholesale & retail | 2021 |
| Tubs ' N ' Tiles Limited | Wholesale & retail | 2006 |
| TV Chimp Limited | Information & communication | 2003 |
| TWP (Company Secretary) Limited | Professional & scientific | 2000 |
| TWP (Directors) Limited | Professional & scientific | 2000 |
| TX Direct Limited | Information & communication | 1998 |
| Tycoon Corporations Limited | Professional & scientific | 2013 |
| TYE Management Services Limited | Professional & scientific | 1996 |
| Tygar Surfacing Limited | Construction | 2009 |
| Tylers of Bilston Limited | Wholesale & retail | 1957 |
| Tylonty Catering Limited | Wholesale & retail | 2023 |
| Tyndallwoods Solicitors Limited | Professional & scientific | 2007 |
| U.K. Merchandising Limited | Wholesale & retail | 2007 |
| Ubhi Limited | Extraterritorial | 2003 |
| Ucontrol Limited | Manufacturing | 1973 |
| UEI Falcontec Limited | Manufacturing | 2012 |
| UEI Fine CUT Limited | Administrative & support | 2000 |
| UHY Hacker Young (Birmingham) LLP | | 2007 |
| UK Impact Company Limited | Extraterritorial | 2007 |
| UK Access Solutions Limited | Construction | 2003 |
| UK Adles Electric Limited | Manufacturing | 2023 |
| UK Behaviour Analysis and Research Group C.I.C. | Other services | 2000 |
| UK Belle Group Limited | Manufacturing | 2024 |
| UK Bharat Holding Ltd | Manufacturing | 2023 |
| UK Bothe Group Limited | Extraterritorial | 2023 |
| UK Depark Biochemical Co., Ltd. | Extraterritorial | 2022 |
| UK Dili Measurement and Control Technology Co., Ltd | Extraterritorial | 2023 |
| UK Foundries Ltd | Manufacturing | 1996 |
| UK Fusi Mining Chemcial Ltd | Mining & quarrying | 2023 |
| UK Huast International Crops Co., Ltd | Wholesale & retail | 2023 |
| UK Kangpasi International Chemical Industry Ltd | Mining & quarrying | 2023 |
| UK Kstfox Valves Self-Control Limited | Manufacturing | 2023 |
| UK Oliviabenson International Limited | Extraterritorial | 2023 |
| UK Omak Agrochemical Group Ltd | Extraterritorial | 2018 |
| UK RS Chemical Limited | Manufacturing | 2023 |
| UK Saddles Limited | Manufacturing | 2003 |
| UK Seeffa Industry Group Co., Ltd | Extraterritorial | 2022 |
| UK Xploremart Ltd | Wholesale & retail | 2026 |
| UK Zenex Electrified Limited | Administrative & support | 2019 |
| Umery Catering Limited | Wholesale & retail | 2023 |
| UN Lawson Ltd | Health & social care | 2022 |
| Union Contractors (Midlands) Limited | Construction | 1980 |
| Unique PUB Investments Limited | Professional & scientific | 1999 |
| Unique PUB Properties Alpha Limited | Hospitality | 2000 |
| Unique PUB Properties Beta Limited | Hospitality | 2000 |
| Unique PUB Properties Gamma Limited | Hospitality | 2000 |
| Unique PUB Properties Limited | Hospitality | 1999 |
| Unique PUB Properties Theta Limited | Hospitality | 2000 |
| Unique Pubs Limited | Financial services | 1999 |
| Unit 67 (Developments) Limited | Construction | 1998 |
| Unit 67 (Management) Limited | Real estate | 1994 |
| Unit 67 Limited | Households | 1976 |
| United Machining UK Limited | Manufacturing | 1996 |
| United Properties (West Midlands) Ltd | Real estate | 2017 |
| United Properties Midlands Limited | Hospitality | 2004 |
| Unity Manufacturing Limited | Transport & logistics | 1996 |
| Universal Edge Limited | Wholesale & retail | 2026 |
| University of Wolverhampton Enterprise Limited | Education | 1989 |
| University of Wolverhampton Science Park Limited | Real estate | 1993 |
| University of Wolverhampton Social Enterprises Limited | Education | 1989 |
| Ur-Mortgage Limited | Financial services | 2008 |
| Urban Roots Limited | Other services | 2002 |
| Urbanov Limited | Wholesale & retail | 2026 |
| US Nails Ltd | Other services | 2022 |
| Utility Engineering Limited | | 1993 |
| V J Presswork Limited | | 1982 |
| Valbruna UK Limited | Wholesale & retail | 1986 |