| Kive Environmental Services Ltd | Water & waste | 2026 |
| KJ Electrical Contractors Ltd | Construction | 2025 |
| Knights Painting Contractors Ltd | Construction | 2019 |
| Knowledge Contractors Limited | Construction | 2018 |
| Kpds Foods Ltd | Hospitality | 2018 |
| Kroma Marketing Ltd | Professional & scientific | 2024 |
| L & D Semmens Construction Ltd | Construction | 2013 |
| Lemon BB Ltd | Hospitality | 2024 |
| LJI Maintenance Services Ltd | Manufacturing | 2025 |
| Lock & Key Property Investment Ltd | Real estate | 2023 |
| M & M Gauvain Couriers Ltd | Transport & logistics | 2013 |
| M J Fencing Services Ltd | Administrative & support | 2022 |
| Maerdy Community Centre Limited | Other services | 2005 |
| Markin Construction Ltd | Construction | 2026 |
| Maxiemum Construction Limited | Construction | 2019 |
| Mayfair Garden Take Away Ltd | Hospitality | 2018 |
| Meliora Enterprises Ltd | Manufacturing | 2024 |
| Monster X Competitions Ltd | Arts & recreation | 2026 |
| Motorluxe Car Sales Ltd | Wholesale & retail | 2024 |
| Murphy's Construction Ltd | Construction | 2018 |
| N&S Drive Ltd | Transport & logistics | 2018 |
| Nasreen Khalida Ltd | Wholesale & retail | 2025 |
| NJF Aesthetics Ltd | Other services | 2021 |
| Noble Civil Engineering Ltd | Construction | 2013 |
| Nonnies Deli Ltd | Hospitality | 2026 |
| NY Maria Polo Ltd | Wholesale & retail | 2026 |
| Old School Community Hub CIC | Wholesale & retail | 2023 |
| Organic Energy Farm Ltd | Agriculture & fishing | 2025 |
| P3AK Holdings Limited | Real estate | 2024 |
| PAR70 Limited | Hospitality | 2025 |
| Parkgate Building and Construction Ltd | Construction | 2025 |
| Pasha Cuts Ltd | Other services | 2025 |
| Pina Care Ltd | Health & social care | 2019 |
| PIT Stop Tyre & Exhaust Centre Limited | Wholesale & retail | 2004 |
| Presenting Binders Ltd | Extraterritorial | 2018 |
| Pride of Asia Ltd | Hospitality | 2025 |
| Prince Treorci PUB Ltd | Other services | 2025 |
| R1 Mini Market Ltd | Wholesale & retail | 2025 |
| Rail Road Tech Ltd | Manufacturing | 2024 |
| Railtech Mechanical Ltd | Manufacturing | 2025 |
| RCT Pizza Ltd | Hospitality | 2022 |
| Recycling Equipment (Bridgend) Ltd | Wholesale & retail | 2016 |
| Research Chems Limited | Wholesale & retail | 2025 |
| RGL Construction Developments Limited | Hospitality | 1999 |
| Rhondda Fach Veterans CIC | Health & social care | 2023 |
| Rhondda RAW Ltd | Manufacturing | 2022 |
| Richard Jones Plumbing and Heating Ltd | Construction | 2020 |
| Richards Thomas LLP | | 2009 |
| S B C Homes Ltd | Real estate | 2022 |
| Sapphire Research and Electronics Limited | Manufacturing | 1967 |
| Scott BMS Ltd | Construction | 2026 |
| Screentec Print Limited | Manufacturing | 2021 |
| Securimedic UK Ltd | Health & social care | 2023 |
| Seldon and SON Construction Ltd | Construction | 2022 |
| Seldon Properties Ltd | Real estate | 2025 |
| Sheilden Groundworks Limited | Construction | 2019 |
| SJ Security Facilities Management Ltd | Administrative & support | 2023 |
| SJG Home Improvements 2023 Ltd | Construction | 2023 |
| SMC Electrics Ltd | Construction | 2023 |
| Soaring Supersaurus CIC | Agriculture & fishing | 2021 |
| Splitenz Hair Design Limited | Other services | 2018 |
| Spottphil Utilities Ltd | Construction | 2012 |
| Stephenmurphy Ltd | Construction | 2026 |
| Steve Rowlands Car Sales Limited | Wholesale & retail | 2002 |
| Swan Fitness & Massage Ltd | Education | 2021 |
| TCK Renovations Ltd | Construction | 2025 |
| Teify Investments Limited | Professional & scientific | 2006 |
| Telehealth Quality Group Ukeig | | 2014 |
| Tg&Sons Construction Services Ltd | Construction | 2025 |
| TGT ENT Ltd | Arts & recreation | 2025 |
| THE Fern and IVY CIC | Hospitality | 2025 |
| THE Fern Partnership | Education | 2016 |
| Theautospa Ltd | Administrative & support | 2024 |
| Thecigar'Dfather Ltd | Wholesale & retail | 2024 |
| Timecentres UK Limited | Education | 2014 |
| Tj's Elite Contracts Ltd | Construction | 2020 |
| Toft Plumbing Services Ltd | Construction | 2015 |
| Topcoat Powder Coating Limited | Manufacturing | 2019 |
| Tower Print Limited | Manufacturing | 2004 |
| Trendy HUT Ltd | Wholesale & retail | 2021 |
| Twinners Plastering & Property Maintenance Ltd | Construction | 2023 |
| Tylorstown Welfare Hall Limited | Health & social care | 2012 |
| Universal Goals Curriculum Ltd | Education | 2021 |
| UP Write Ltd | Professional & scientific | 2022 |
| Vasa Group Limited | Hospitality | 2025 |
| VAV Travel Ltd | Transport & logistics | 2025 |
| Village & Valleys (RCT) Community Transport Ltd | Transport & logistics | 2010 |
| Wales Campervan Hire Ltd | Administrative & support | 2021 |
| Willis Bespoke Ltd | Construction | 2022 |
| Wood Windows Ltd | Manufacturing | 2024 |
| X-Ply Limited | Manufacturing | 2018 |
| Y Siop Fach Sero CIC | Wholesale & retail | 2021 |