| Starshore Limited | Financial services | 2006 |
| Sterco Transport Ltd. | Transport & logistics | 2017 |
| Stewart Associates Architects Limited | Professional & scientific | 2003 |
| Stormwind Sailing Ltd | Education | 2014 |
| Superfastscots Ltd | Arts & recreation | 2019 |
| Swell Properties Ltd | Real estate | 2024 |
| T'S & C'S Ltd | Wholesale & retail | 2018 |
| TDB Solutions Ltd | Wholesale & retail | 2025 |
| Teddy Bears Property Limited | Hospitality | 2025 |
| Tgwh Limited | Real estate | 2007 |
| Thai Smiths Limited | Hospitality | 2024 |
| THE Erinbeg Consultancy LLP | | 2012 |
| THE Fertility Psychologist Ltd | Health & social care | 2024 |
| THE Glasgow Academy of Fine Art Ltd | Education | 2019 |
| THE Great Forret Enterprises Limited | Professional & scientific | 2012 |
| THE Mcdougalls TV Ltd | Information & communication | 2024 |
| THE Natural Fruit and Beverage Company Limited | Manufacturing | 2001 |
| THE Vape Shop Largs Ltd | Wholesale & retail | 2022 |
| THE WEE Lookout Ltd | Hospitality | 2025 |
| Thermogas Dynamics Limited | Professional & scientific | 2011 |
| Thistle Deli T/A Deli IL Cardo Ltd | Wholesale & retail | 2021 |
| Thomson Automation Solutions Ltd | Professional & scientific | 2024 |
| Tiger Construction Limited | Other services | 2023 |
| TO DIE for Desserts Ltd | Hospitality | 2026 |
| TOM Smith (West Kilbride) Limited | Construction | 1984 |
| Tomorrow Services Ltd | Professional & scientific | 2019 |
| Tourbackline Ltd | Arts & recreation | 2016 |
| Toy and Game Haven Ltd | Wholesale & retail | 2024 |
| Trixie Properties Limited | Construction | 2010 |
| True Orgonite Ltd | Wholesale & retail | 2026 |
| Uidh Solutions Ltd | Professional & scientific | 2025 |
| UK Sailing Limited | Arts & recreation | 2020 |
| Viking Largs Ltd | Hospitality | 2025 |
| Waterside Control of Work Solutions Ltd | Professional & scientific | 2026 |
| WD Coaching Ltd | Other services | 2025 |
| WEE MAN Enterprises Ltd. | Administrative & support | 2007 |
| West Coast Upholstery Limited | Manufacturing | 2017 |
| West PAC Technical Support LP | | 2014 |
| Wide Ventures Limited | Other services | 2025 |
| Wilkies Trading Ltd | Wholesale & retail | 2017 |
| Willbot Trustees Limited | Professional & scientific | 2012 |
| William Scott & Company. | | 1979 |
| Wndr Limited | Wholesale & retail | 2020 |
| Wonderwhere Ltd | Wholesale & retail | 2026 |
| YES Your Entire Self CIC | Public administration | 2021 |
| Yoda Consultancy Ltd | Professional & scientific | 2025 |
| YU Rong YI Shanghai Ltd | Hospitality | 2016 |
| Zero Potential Ltd | Professional & scientific | 2025 |
| ZERO49 Ltd | Health & social care | 2007 |
| Zing Kitchens & Bathrooms Ltd | Other services | 2022 |