| Alyn Evans Consultancy Services Ltd | Mining & quarrying | 2012 |
| AMS Garage Glynneath Limited | Wholesale & retail | 2026 |
| Bespoke Housing Developments Limited | Real estate | 2006 |
| BPS Roofing and Carpentry Limited | Manufacturing | 2021 |
| Bramwood Timber Products Ltd | Manufacturing | 2019 |
| C & E Properties (Glynneath) Ltd | Real estate | 2025 |
| Clearwater Activity Centre Ltd | Education | 2024 |
| Elements Special Effects (Wales) Limited | Information & communication | 2024 |
| FA 68 Food Ltd | Hospitality | 2024 |
| Flavour Drops Ltd | Wholesale & retail | 2023 |
| Glynneath RFC Limited | Arts & recreation | 2017 |
| Griffiths Family Investments Limited | Real estate | 2020 |
| Hazeland E & F Ltd | Wholesale & retail | 2024 |
| J D Entertainments Ltd | Arts & recreation | 2018 |
| J M Nedd Properties Ltd | Real estate | 2020 |
| John Pearce (Glynneath) Limited | Other services | 1991 |
| JPM Station Hotel Limited | Hospitality | 2010 |
| KTC (South Wales) Ltd | Wholesale & retail | 2018 |
| Kyle Davies Building Contractor Ltd | Construction | 2018 |
| Mega Yarn Cake Ltd | Wholesale & retail | 2023 |
| Nedd Products (Glynneath) Limited | Wholesale & retail | 1979 |
| ORM Group Holdings Ltd | Financial services | 2026 |
| Paul Green Tyres Limited | Wholesale & retail | 2009 |
| Precision Custom Cycles Limited | Manufacturing | 2002 |
| RWP Properties Limited | Real estate | 2017 |
| Sgwd Gwladys Ltd | Hospitality | 2016 |
| Smart Design Building & Roofing Ltd | Construction | 2025 |
| South Wales Blinds Ltd | Manufacturing | 2018 |
| T F Construction Management Ltd | Construction | 2017 |
| Tiny Play Limited | Hospitality | 2025 |
| TTF Carpentry Ltd | Manufacturing | 2024 |
| Velocart Ltd | Information & communication | 2020 |
| Vensports Limited | Arts & recreation | 2005 |
| Watkins Coaches Ltd | Transport & logistics | 2011 |
| WE Build South Wales Ltd | Administrative & support | 2019 |
| WT Risk & Security Consultancy Ltd | Administrative & support | 2024 |
| York House (Llandrindod Wells) Management Company Limited | Households | 2006 |