Alexander Armstrong

Alexander Armstrong (born 14 August 1970) voices Mr Smith in The Sarah Jane Adventures and Sarah Jane's Alien Files, as well as the Doctor Who episodes The Stolen Earth and Journey's End. He appeared in Doctor Who again as Reg Arwell in The Doctor, the Widow and the Wardrobe.

In addition to acting Armstrong is a well-known comic and presenter, and headlines  with his longtime comedy partner. In 2009, Armstrong and Miller's work on The Armstrong & Miller Show won them a BAFTA for "Best Comedy Programme." He is the presenter of BBC1 gameshow .