Dr Rhiannon Mathias
Trustee
| Charity | Role | Appointed |
|---|---|---|
| Bangor New Music Festival | Chair | |
| Canolfan Gerdd William Mathias Cyf | Trustee | |
| Gwyl Beaumaris Festival | Trustee | May 29, 2021 |
| Incorporated Society Of Musicians Trust | Trustee | Dec. 11, 2025 |
| Welsh Music Guild / Cymdeithas Cerddoriaeth Cymru | Trustee | Sept. 9, 2023 |