Brian Donlevy

Prof. Bernard Quatermass

Richard Wordsworth

Victor Carroon

David King-Wood

Dr. Gordon Briscoe

Jack Warner

Inspector Lomax

Margia Dean

Judith Carroon

Maurice Kaufmann

Marsh

John Wynn

Detective Sergeant Best

Harold Lang

Christie

Lionel Jeffries

Blake

Thora Hird

Rosie Wrigley