| Strathand (Paisley) Limited | Manufacturing | 1996 |
| Struthers Memorial Church | Other services | 2007 |
| Surpass Consulting Limited | Professional & scientific | 2015 |
| Sutherland Commercial Cleaning Services Limited | Administrative & support | 2005 |
| Taipo Investment Ltd. | Real estate | 1999 |
| Tattie Bogle's Limited | Professional & scientific | 2000 |
| TG Industrial Services Limited | Water & waste | 2006 |
| THE Brown EGG Farm | | 1995 |
| THE Print Brokers (Scotland) Limited | Wholesale & retail | 2003 |
| THE Star Project | Health & social care | 1999 |
| THE Tontine Hotel Limited | Hospitality | 2007 |
| Thomas Johnstone (Holdings) Limited | Financial services | 2017 |
| Thomson Communications UK Limited | Information & communication | 1987 |
| TOM Hannah (Agencies) Limited | Manufacturing | 1946 |
| Tony Wood Logistics Ltd | Transport & logistics | 2024 |
| Trekant Woods Limited | Agriculture & fishing | 2002 |
| Trend Trade | | 1994 |
| Trodat (UK) Limited | Manufacturing | 1990 |
| UIS (EOT) Limited | Construction | 2002 |
| Vascutek Limited | Manufacturing | 1982 |
| Vascutek Pension Trustees Limited | Professional & scientific | 2004 |
| Vending Scotland Ltd | Manufacturing | 2026 |
| W.F.H. Realisations 1985 Limited | Professional & scientific | 1972 |
| Ward Accountancy Practice Limited | Professional & scientific | 2021 |
| Watson's Home Bakery (Glasgow) Limited | Professional & scientific | 1961 |
| Wellbread Bakery Limited | Manufacturing | 2003 |
| Werko Limited | Construction | 1911 |
| West Coast GAS Services Ltd | Construction | 2005 |
| WET & Windy Energy Limited | Energy | 1992 |
| White House Products Ltd | Manufacturing | 1984 |
| Williams Double Glazing Limited | Manufacturing | 1999 |
| Woodend Developments | | 1990 |
| Wright & Crawford Holdings Limited | Financial services | 2025 |
| Xcomps Ltd | Arts & recreation | 2025 |
| Yours Truly Ltd. | Real estate | 2001 |
| “Q-Star Telenergy Holdings Limited | Information & communication | 2020 |