Tom Baker

The Doctor

Lalla Ward

Romana

Matthew Waterhouse

Adric

John Leeson

K9 (voice)

Clifford Rose

Rorvik

Kenneth Cope

Packard

David Kincaid

Lane

Freddie Earlle

Aldo

Harry Waters

Royce

David Weston

Biroc

Vincent Pickering

Sagan

Robert Vowles

Gundan

Jeremy Gittins

Lazlo