Christopher Thomson (born 19 January 1991) is a British actor, writer and director. He is best known for his portrayal as the Doctor (2006-2008), when he tookover from his younger brother, Scott and later handed over the keys of the TARDIS to his friend, Nicholas Miles. He is also well-known for his non-Doctor Who shows such as "The CT Show", "Today's Officers" (and it's follow-up series "Today's Detectives"), and "Words of Woodman" His latest and most notable role was as The Executive in Series 3 of Time Agent, prior to a cameo in one of the 2009 Specials as a Time Agency representative.