| Timeteam Associates Ltd | Other services | 2012 |
| TMO Media Ltd | Arts & recreation | 2026 |
| TOM Soup Limited | Financial services | 2019 |
| Touchsoft Limited | Information & communication | 2012 |
| Tradepro Construction Ltd | Construction | 2019 |
| Tranzcare Travel (International) Ltd | Transport & logistics | 2007 |
| Tranzcare Travel Group Ltd | Transport & logistics | 2022 |
| Trek & Trail Saltaire Limited | Wholesale & retail | 2009 |
| Trukvan and Car Rentals Limited | Administrative & support | 1967 |
| TRY Mike Hall Vacuums Limited | Wholesale & retail | 2018 |
| TSP KAR Hire Limited | Wholesale & retail | 1998 |
| UK Aviation Services (ENG) Limited | Manufacturing | 2012 |
| UK Aviation Services (NW) Limited | Administrative & support | 2010 |
| Valdor Commercial Leasing Limited | Administrative & support | 1979 |
| Valdor Holdings Limited | Administrative & support | 1986 |
| Valdor Industrial Developments Limited | Administrative & support | 1978 |
| Vall-Labh Investment Company Limited | Financial services | 2021 |
| Valley Blinds Limited | Wholesale & retail | 2008 |
| Varispeed Transport Limited | Transport & logistics | 2014 |
| Versatask Ltd | Wholesale & retail | 2023 |
| Village WAX Melts Ltd | Wholesale & retail | 2019 |
| W & W Hand Car Wash Limited | Other services | 2016 |
| W.H.B. Construction Ltd. | Construction | 1998 |
| W.H.B. Electrical Services (UK) Limited | Construction | 2011 |
| W.H.B. Holdings Ltd | Financial services | 2003 |
| W.H.B. Security Services (UK) Limited | Construction | 2019 |
| Wadestar Limited | Financial services | 2008 |
| Warm Roof Ltd | Construction | 2019 |
| WFG Limited | Administrative & support | 1978 |
| Whitehill Care Services Limited | Health & social care | 2021 |
| Whnworld Ltd | Wholesale & retail | 2021 |
| Wilds Ltd | Professional & scientific | 1998 |
| Wipertec Holdings Limited | Financial services | 2016 |
| Wipertec Limited | Manufacturing | 2001 |
| Withins Reservoir Limited | Other services | 2016 |
| Wrenwood Group Finance Limited | Administrative & support | 1983 |
| Wrenwood Leasing Limited | Administrative & support | 1981 |
| WS Nutrition Ltd | Manufacturing | 2026 |
| Zdeer Ltd | Wholesale & retail | 2025 |
| Zinc Dental Nursing Agency Limited | Administrative & support | 2017 |