Sean Pertwee

 was a British actor who appeared as himself in the 50th Anniversary story The Five(ish) Doctors Reboot.

Sean Pertwee is also the son of Third Doctor actor, Jon Pertwee.

Trivia

 * He has been asked many times whether or not he would play the role of the Third Doctor if asked (as a tribute to his father), but Sean has said that the character was his father's and that he wants to keep it that way.