Jon Pertwee

The Doctor

Roger Delgado

The Master

Katy Manning

Jo Grant

Edwin Richfield

Captain Hart

Clive Morton

Trenchard

June Murphy

3rd Officer Jane Blythe

Donald Sumpter

Commander Ridgeway

David Griffin

Lt. Commander Mitchell

Hugh Futcher

Hickman

Royston Tickner

Robbins

Pat Gorman

Sea Devil

Peter Forbes-Robertson

Chief Sea Devil

Declan Mulholland

Clark

Alec Wallis

Ldg. Telegraphist Bowman

Brian Justice

Castle Guard Wilson

Terry Walsh

Castle Guard Barclay

Eric Mason

C.P.O. Smedley

Christopher Wray

Ldg. Seaman Lovell

Stanley McGeagh

Castle Guard Drew

Brian Vaughan

Lt. Commander Watts

Martin Boddey

Walker