Peter Davison

The Doctor

Janet Fielding

Tegan Jovanka

Mark Strickson

Vislor Turlough

Cyril Luckham

The White Guardian

Valentine Dyall

The Black Guardian

Keith Barron

Striker

Christopher Brown

Marriner

Lynda Baron

Wrack

Leee John

Mansell

James McClure

First Officer

Tony Caunter

Jackson

Clive Kneller

Collier

Fiona Cumming