Jake Simmonds was at first a member of a resistance group called "the Preachers" along with Ricky Smith and Mrs Moore. He later helps the Doctor, Rose Tyler and Mickey Smith destroy the Cyber factory and pilot them away on John Lumic's zeppelin. Though they succes in doing this, the death of Ricky puts great preassure on Jake throughout the event. He later helps parallel Pete Tyler travel between two universes and stop the Cybermen again.
He was protrayed by