Insurgent (The Dalek Invasion of Earth)

An insurgent was one of the freedom fighters on Earth during the Daleks' 22nd century invasion and occupation of Earth.

He told Barbara Wright that it was dangerous to stay in the area where they were, and led her to safety across the ruins of London to the resistance base in an empty Underground station, where Susan Foreman had already been taken by Carl Tyler. (TV: The Dalek Invasion of Earth)

Behind the scenes
Robert Aldous was a late addition to the cast, and so was uncredited on-screen for "World's End", though he was billed as "An Insurgent" in Radio Times.