Unexplained Laughter

Diana Rigg

Lydia

Elaine Paige

Betty

Joanna David

Elizabeth

Jon Finch

Finn

Robert Gwilym

Beuno

Cindy Holden

Angharad

Robert East

Wyn

Emlyn Price

Hywel

Patricia Kane

Lil

Howell Evans

Sid

Moir Leslie

April

Anna Linstrum

Angharad's Voice

Miriam Margolyes

Laughter (voice)

Alun Owen

Writer

Tom Kinninmont

Producer

Gareth Davies

Director

Alice Thomas Ellis

Writer