Cast & crew
Unexplained Laughter (1989)
Directed by Gareth Davies Written by Alice Thomas Ellis, Alun Owen
Cast
| Diana Rigg | Lydia |
| Elaine Paige | Betty |
| Joanna David | Elizabeth |
| Jon Finch | Finn |
| Robert Gwilym | Beuno |
| Robert East | Wyn Lettner |
| Emlyn Price | Hywel |
| Cindy Holden | Angharad |
| Patricia Kane | Lil Mainwaring |
| Howell Evans | Sid Arbuck |
| Moir Leslie | April Dray |
| Anna Linstrum | Stitch (Voice) |
| Miriam Margolyes | Stitch (Voice) |
Crew
| Tom Kinninmont | Producer |
| Alice Thomas Ellis | Writer |
| Gareth Davies | Director |
| Alun Owen | Writer |