Alexander Armstrong

Alexander Armstrong (born 14th 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.

In addition to acting Armstrong is a well-known comic and presenter, and headlines The Armstrong & Miller Show with his longtime comedy partner Ben Miller. In 2009, he and Miller won a BAFTA for "Best Comedy Programme", because of their work on their eponymous hit.