Cast & crew
Grand Slam (1978)
Directed by John Hefin Written by Gwenlyn Parry
Cast
| Windsor Davies | Mog |
| Hugh Griffith | Caradog |
| Dewi Morris | Glyn |
| Sion Probert | Maldwyn |
| Sharon Morgan | Odette |
| Marika Rivera | Madame Leroy |
| Dillwyn Owen | Will |
| Alan Chuntz | Aznavour |
| Lowri Buckingham | Chambermaid |
| Marie Claire | Hostess |
| Kim Karlisle | Stripper |
| John Hefin | Bar Patron |
Crew
| John Hefin | Director |
| Gwenlyn Parry | Writer |