西蒙·麦克金代尔

Simon MacCorkindale

饰：Lt. Commander Maddox,1 episode, 1978,

John Woodnutt

饰：Spencer,4 episodes, 1978,

埃文·索伦

Ewen Solon

饰：Admiral Lupin,4 episodes, 1978,

彼得·沃恩

Peter Vaughan

饰：Captain Hatfield,6 episodes, 1978,

弗雷德里克·耶格

Frederick Jaeger

饰：Commander Vallance,6 episodes, 1978,

Howard Goorney

饰：Garble,2 episodes, 1978,

唐纳德·伯顿

Donald Burton

饰：Commander David Wheeler,6 episodes, 1978,

乔治·库鲁里斯

George Coulouris

饰：Franz Bayard,4 episodes, 1978,

Andrew Ashby

饰：Richard Wheeler,6 episodes, 1978,

Shelley Crowhurst

Shelley Crowhurst

饰：Lucy,6 episodes, 1978,

Gordon Salkilld

Gordon Salkilld

饰：Petty Officer Parker,6 episodes, 1978,

Paul Nicholson

Paul Nicholson

饰：Lieutenant,3 episodes, 1978,

June Barrie

June Barrie

饰：Mrs. Edgar,1 episode, 1978,

Peter Birch

Peter Birch

饰：Telegraphist,1 episode, 1978,

Richard Willis

Richard Willis

饰：Peter,6 episodes, 1978,

Rex Holdsworth

饰：Publican,1 episode, 1978,

Hubert Tucker

饰：Lt. Commander Cook,1 episode, 1978,

Kit Thacker

饰：Radar Operator,1 episode, 1978,