
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.

as The Doctor

as Dodo Chaplet

as Polly

as Ben Jackson

as Professor Brett

as Professor Krimpton

as Sir Charles Summer

as Major Green

as War Machine Operator/The Voice of WOTAN

as Kitty

as Flash Customer

as The Minister

as Himself

as American Journalist

as American Journalist

as Interviewer

as Radio Announcer

as Worker

as Tramp

as Taxi Driver

as Mechanic

as Soldier

as Soldier

as Soldier

as Soldier

as Man in Telephone Box

as Soldier