Jon Pertwee

The Doctor

Caroline John

Liz Shaw

Nicholas Courtney

Brigadier Lethbridge-Stewart

Hugh Burden

Channing

Hamilton Dyce

Major General Scobie

Antony Webb

Dr. Henderson

Neil Wilson

Seeley

Talfryn Thomas

Mullins

John Breslin

Captain Munro

John Woodnutt

Hibbert

Derek Smee

Ransome

Henry McCarthy

Dr. Beavis

Betty Bowden

Meg

Allan Mitchell

Wagstaffe

Robin Squire

Auton Scount / UNIT Driver

David Dewhurst

Private Hawkins