Tom Campbell

Tom Campbell was a Police Constable from London in the 20th century.

Biography
Tom accidentally boarded TARDIS mistaking it for a genuine police box while attempting to foil an armed robbery. After returning from a journey with Dr. Who he was returned to the scene of the crime earlier than he left, therefore allowing him to apprehend the robbers. (Movies: Daleks - Invasion Earth 2150 AD)

Behind the scenes

 * Actor Bernard Cribbins would later appear on the TV series proper as recurring character Wilfred Mott.