Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Television -- Wales, 1 canlyniadau
- Television -- Great Britain, 1 canlyniadau
- Television broadcasting -- Great Britain, 1 canlyniadau
- Television broadcasting -- Wales, 1 canlyniadau
- Radio -- Great Britain, 1 canlyniadau
- Radio -- Wales, 1 canlyniadau
- Radio broadcasting -- Great Britain, 1 canlyniadau
- Radio broadcasting -- Wales, 1 canlyniadau