| THE Old Co-Op Wainstalls Limited | Households | 2006 |
| THE Shire Opportunity Limited | Financial services | 2024 |
| THE Snackery Ltd | Hospitality | 2023 |
| THE Stancliffe Group Limited | Professional & scientific | 1990 |
| THE Tannery RTM Company Limited | Households | 2008 |
| THE Three Courts Management Company Limited | Households | 1988 |
| THE UK Stable Coin Limited | Information & communication | 2022 |
| THE Vinyl Mount Down Ltd | Wholesale & retail | 2018 |
| THE Windermere Launderette and DRY Cleaning Company Limited | Other services | 2002 |
| THE Woolly Woman Crafts Ltd | Manufacturing | 2025 |
| THE Yorkshire Brick Co. Limited | Professional & scientific | 1998 |
| Thompson Electrical Wholesale Limited | Wholesale & retail | 2015 |
| Thornbury Park Management Company Ltd | Real estate | 2020 |
| Thornton Hills (Denholme) Management Company Limited | Households | 2023 |
| Three Smith Ecom Limited | Wholesale & retail | 2021 |
| Three Smith Group Holdings Limited | Real estate | 2019 |
| Three Smith Manufacturing Limited | Manufacturing | 2008 |
| Threesixty Engineering Ltd | Wholesale & retail | 2015 |
| THS Holdings Ltd | Manufacturing | 2020 |
| THS Industrial Textiles Group Ltd | Financial services | 2024 |
| THS Industrial Textiles Limited | Manufacturing | 2009 |
| THS Technical Textiles Ltd | Extraterritorial | 2017 |
| Tigers Developments Limited | Arts & recreation | 2018 |
| Titanium Conversions Limited | Manufacturing | 2014 |
| Tivac Alloys Limited | Manufacturing | 2001 |
| TMS UK Consultancy Ltd | Professional & scientific | 2024 |
| Together Learning Trust | Education | 2014 |
| Topaz Distribution Limited | Wholesale & retail | 2023 |
| Topcliffe Mill Freehold Company Limited | Households | 2019 |
| Tops the POT Limited | Information & communication | 2016 |
| Total Savage Ltd | Wholesale & retail | 2017 |
| Totem Communications Ltd | Information & communication | 2010 |
| Tower Electrical Limited | Construction | 2006 |
| Town and Country Paving Limited | Manufacturing | 2001 |
| Town Hall Tavern Management Company Limited | Households | 2006 |
| Trafficlear Limited | Wholesale & retail | 2011 |
| Transcend PT Ltd | Arts & recreation | 2016 |
| Travelquail Limited | Administrative & support | 2022 |
| Treedown Limited | Real estate | 2010 |
| Trilab Studio Ltd | Arts & recreation | 2021 |
| Trillium Flow Services UK Limited | Manufacturing | 1970 |
| Triple H & Brakes Ltd | Wholesale & retail | 2020 |
| Trips of a Lifetime Ltd | Administrative & support | 2023 |
| Tristar Telecom Limited | Information & communication | 2010 |
| Tsghl Group Holdings Limited | Real estate | 2022 |
| Tsikira Ltd | Health & social care | 2014 |
| Turbine Engineering Developments Ltd | Energy | 2017 |
| Turbocharger Service (UK) Ltd | Wholesale & retail | 2011 |
| TVF Alarms Limited | Professional & scientific | 1997 |
| UK Black Gold Limited | Wholesale & retail | 2023 |
| UK Installations & Logistics Limited | Transport & logistics | 2010 |
| Ultimate Windows (Yorkshire) Limited | Manufacturing | 2013 |
| Umars Express Limited | Hospitality | 2026 |
| Ummy Healthcare Ltd | Wholesale & retail | 2024 |
| Unbeknownst Paranormal Ltd | Administrative & support | 2022 |
| Unirama Limited | Wholesale & retail | 2004 |
| United Fire Alarms Limited | Professional & scientific | 1992 |
| UP North Runway Ltd | Administrative & support | 2024 |
| Upbeat Social Enterprises Community Interest Company | Wholesale & retail | 2006 |
| Urban Engineering Limited | Manufacturing | 2006 |
| Urdor Limited | Construction | 2024 |
| Urquhart Mews Management Company Limited | Administrative & support | 2009 |
| US Fundraising Ltd | Other services | 2019 |
| Usher Property Ltd | Real estate | 2019 |
| V-Seal Limited | Manufacturing | 2003 |
| V. G. Estate Agent Limited | Real estate | 2007 |
| V. G. Property Ripponden Limited | Real estate | 2022 |
| Vaani Smiles Ltd | Health & social care | 2025 |
| Vacuum Cleaner Parts Ltd | Wholesale & retail | 2020 |
| Valley Construction & Building Ltd | Construction | 2011 |
| Valleyhall Developments Ltd | Real estate | 2013 |
| Vanessa Thornton Interiors Limited | Professional & scientific | 2019 |
| Vcep Investments LLP | | 2005 |
| Vcep Limited | Real estate | 2015 |
| Vera Causa Limited | Information & communication | 2023 |
| Viewed Video Limited | Administrative & support | 2025 |
| Vina Nails Ltd | Other services | 2021 |
| Virtual Resolution Ltd | Professional & scientific | 2012 |
| Vision Developments One Ltd | Real estate | 2015 |
| VM (Eccleshill NO.1) Management Company Limited | Households | 2006 |
| Vogue Beds Limited | Manufacturing | 1993 |
| VR Studios Ltd | Other services | 2009 |
| W E Fraser Services Limited | Arts & recreation | 2014 |
| W Fawkes Ltd | Other services | 2021 |
| W.W. Leese (Halifax) Limited | Real estate | 1951 |
| WAA Limited | Professional & scientific | 2018 |
| Walker Bros (Elland) Limited | Manufacturing | 1996 |
| Walmersley Cars Ltd | Wholesale & retail | 2019 |
| Wans E-Store Limited | Wholesale & retail | 2024 |
| Warehouse Social Ltd | Other services | 2022 |
| Warren Park Investments Ltd | Real estate | 2020 |
| Warren Park Limited | Real estate | 2015 |
| Water's Edge Nursery Ltd | Education | 2014 |
| Waterford Property UK Limited | Real estate | 2025 |
| Waterloo Warehouse (Liverpool) Management Company Ltd | Households | 2023 |
| Waterloo Warehouse RTM Company Limited | Real estate | 2003 |
| Waterside Bathrooms Ltd | Wholesale & retail | 2007 |
| Waterside Beauty Limited | Other services | 2022 |
| Watts UP Electrical Services Limited | Extraterritorial | 2021 |
| Waverley (Edgerton Road) Management Company Limited | Households | 2007 |