| ABK Property South Wales LLP | | 2004 |
| Abraham Nursing Homes Limited | Health & social care | 2003 |
| AD Asset & Property Investments Ltd | Real estate | 2023 |
| AD Vault Ltd | Professional & scientific | 2020 |
| Bro-Tech Limited | Manufacturing | 1984 |
| Cineshorts Limited | Information & communication | 2020 |
| Country Timbers Limited | Construction | 2021 |
| Cristal Washroom Services Ltd | Water & waste | 2010 |
| Crocodeil CYF | Information & communication | 2025 |
| D.B.K.- Technitherm Limited | Manufacturing | 1984 |
| David James Logistics Ltd | Transport & logistics | 2021 |
| Dogfen CYF | Information & communication | 2024 |
| Dotc Studios Ltd | Information & communication | 2019 |
| Dream Projector Ltd | Professional & scientific | 2012 |
| Ecolab GB 1 Limited | Professional & scientific | 2023 |
| Electron LCS Limited | Manufacturing | 2015 |
| Evans Murdoch & Co Limited | Professional & scientific | 2004 |
| Florimonte Properties Ltd | Real estate | 2017 |
| Follicle FX Ltd | Administrative & support | 2025 |
| FSG Tool and DIE Holdings Ltd | Financial services | 2020 |
| Future Clothes Care Limited | Other services | 2012 |
| Garan Treharne Ltd | Administrative & support | 2012 |
| GBC Brewery Limited | Manufacturing | 2023 |
| Gilheaney Construction Limited | Construction | 1998 |
| Guardian Storage Solutions Limited | Transport & logistics | 2025 |
| Hidden Blooms Ltd | Wholesale & retail | 2025 |
| HUW David Design Limited | Professional & scientific | 2020 |
| Hywill Limited | Administrative & support | 2012 |
| JLS Electrical Services (Wales) Ltd | Construction | 2012 |
| L W H Construction Ltd | Construction | 2003 |
| Legacy Builder Ltd | Professional & scientific | 2025 |
| Limeworx Ltd | Construction | 2025 |
| Llantrisant Auto Spares Limited | Transport & logistics | 1983 |
| Luminary Software Limited | Administrative & support | 2015 |
| Maxibrite Limited | Manufacturing | 1962 |
| Motorvibe Ltd | Wholesale & retail | 2024 |
| O & S Groundworks Ltd | Construction | 2022 |
| OOF Group Ltd | Hospitality | 2025 |
| Prichard Recycling Limited | Water & waste | 2016 |
| Project Yellow Recycling Limited | Water & waste | 2016 |
| Purolite (INT.) Ltd | Manufacturing | 1999 |
| Purolite Ltd | Manufacturing | 1984 |
| Ramis Software Ltd | Information & communication | 2025 |
| Renegade Entrepreneurs Ltd | Extraterritorial | 2014 |
| Rentbridge Property Partners Ltd | Real estate | 2025 |
| SDP Property Solutions Ltd | Construction | 2025 |
| SET Business Supplies Ltd | Wholesale & retail | 2023 |
| Stenis Property Maintenance Limited | Construction | 2022 |
| Sullivan & Co. Surveyors Limited | Professional & scientific | 2025 |
| Surf Department CYF | Information & communication | 2022 |
| THE Wheel Factory Ltd | Wholesale & retail | 2026 |
| Tirion Estates Limited | Financial services | 2024 |
| Truth Department Donna Limited | Information & communication | 2017 |
| Truth Department Limited | Information & communication | 2005 |
| Viewfound Limited | Construction | 2005 |