Doctor Who Is A British Science Fiction Television Programme Produced By The BBC Which Depicts The Adventures Of A Mysterious Alien Time-Traveller Known As "The Doctor" Who Travels In His Space And Time-Ship, The TARDIS, Which Normally Appears From The Exterior To Be A Blue 1950s Police Box. With His Companions, He Explores Time And Space, Solving Problems, Facing Monsters And Righting Wrongs. The Doctor Has Been Played By Eleven Actors Over The History Of The Show.