John Hurt

Character: Snitter (voice)

Christopher Benjamin

Character: Rowf (voice)

James Bolam

Character: The Tod (voice)

Nigel Hawthorne

Character: Dr. Boycott (voice)

Warren Mitchell

Character: Tyson / Wag (voice)

Judy Geeson

Character: Pekinese (voice)

Patrick Stewart

Character: Major (voice)

Brian Stirner

Character: Laboratory Assistant (voice)

Penelope Lee

Character: Lynn Driver (voice)

Geoffrey Matthews

Character: Farmer (voice)

Barbara Leigh-Hunt

Character: Farmer's Wife (voice)

John Bennett

Character: Don (voice)

John Franklyn-Robbins

Character: Williamson (voice)

Bill Maynard

Character: Editor (voice)

Malcolm Terris

Character: Robert (voice)

Rosemary Leach

Character: Vera (voice)