| THE Speciality Sauce Company Limited | Professional & scientific | 2004 |
| THE Tryfan Group Limited | Information & communication | 2013 |
| THE Wow’S Service Ltd | Professional & scientific | 2026 |
| Tolani Global Concepts Limited | Wholesale & retail | 2025 |
| TOM Hatton Plumbing and Heating Ltd | Construction | 2022 |
| Tom's Trucking Ltd. | Transport & logistics | 2017 |
| Tomjones Autos Ltd | Wholesale & retail | 2025 |
| Townhouse Consultancy Ltd | Professional & scientific | 2022 |
| Treevolution SW Ltd | Agriculture & fishing | 2024 |
| True Temp Ltd | Construction | 2025 |
| Tvcnp Limited | Hospitality | 2024 |
| Twyn Car Dismantlers Limited | Water & waste | 2003 |
| TY Mynydd Estates Limited | Construction | 2022 |
| Tyche Greek Goddess Ltd | Construction | 2026 |
| Ukaee CIC | Professional & scientific | 2024 |
| Unhyped Ltd | Professional & scientific | 2025 |
| V3 Apparel Ltd | Wholesale & retail | 2018 |
| Valley Plumbing Supplies Ltd | Wholesale & retail | 2023 |
| Valley Tiles Ltd | Wholesale & retail | 2010 |
| Valleys Estates Limited | Real estate | 2024 |
| Valleys Roofing & Cladding Ltd | Construction | 2011 |
| Vanguard Fiber Networks Ltd | Construction | 2024 |
| Victoria Store Abertillery Ltd | Wholesale & retail | 2022 |
| Victory Property Development Ltd | Real estate | 2024 |
| Visual Impact GB Ltd | Administrative & support | 2008 |
| VLM Property Ltd | Real estate | 2024 |
| VRC Roofing and Cladding Limited | Construction | 2023 |
| Warren Scenic Artist Ltd | Information & communication | 2026 |
| Watlec Ltd | Construction | 2019 |
| Wells Property Group Ltd | Real estate | 2025 |
| What Next? Project Ltd | Education | 2025 |
| Whitelinch Ltd | Hospitality | 2023 |
| Wild Aeon Ltd | Hospitality | 2023 |
| Williams & Parry Limited | Health & social care | 2010 |
| Wonder Cinema Ltd | Information & communication | 2023 |
| Wonder Events Company Ltd | Hospitality | 2025 |
| Wooden U Like Ltd | Manufacturing | 2018 |
| Xaix Limited | Information & communication | 2024 |
| Xampld Ltd | Information & communication | 2022 |
| Xilix Property Ltd | Real estate | 2021 |
| Y Mehta Limited | Transport & logistics | 2016 |
| Yellow Spur Ltd | Information & communication | 2015 |
| YEW Wood Forestry Limited | Agriculture & fishing | 2021 |
| Ysgarlad Properties Ltd | Real estate | 2025 |
| Zala Wellbeing Support CIC | Education | 2023 |
| Zest Foods Station Ltd | Hospitality | 2026 |
| Zivi MAX LLP | | 2021 |