
The TARDIS arrives in London in 1966 and the First Doctor and Dodo visit the Post Office Tower. There they meet Professor Brett, whose revolutionary new computer WOTAN (Will Operating Thought ANalogue) can actually think for itself and is shortly to be linked up to other major computers around the world — a project overseen by civil servant Sir Charles Summer.
Genres:

William Hartnell as The Doctor

Jackie Lane as Dodo Chaplet

Anneke Wills as Polly

Michael Craze as Ben Jackson

John Harvey as Professor Brett

John Cater as Professor Krimpton

William Mervyn as Sir Charles Summer

Alan Curtis as Major Green

Gerald Taylor as War Machine Operator/The Voice of WOTAN

Sandra Bryant as Kitty

Ewan Proctor as Flash Customer

George Cross as The Minister

Kenneth Kendall as Himself

Ric Felgate as American Journalist

Carl Conway as American Journalist

John Doye as Interviewer

Dwight Whylie as Radio Announcer

Desmond Cullum-Jones as Worker

Roy Godfrey as Tramp

Michael Rathborne as Taxi Driver

Edward Colliver as Mechanic

John Rolfe as Soldier

John Boyd-Brent as Soldier

Frank Jarvis as Soldier

Robin Dawson as Soldier

John Slavid as Man in Telephone Box

Mike Reid as Soldier
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