Davina McCall (born 16th October 1967) provided the voice of the Davinadroid in Bad Wolf. She is most famous for hosting Big Brother. In March 2009 she co-hosted the BBC's Red Nose Day appeal for Comic Relief alongside David Tennant, during which she had the ignomy of being beaten by Tennant in a mock game of Mastermind in which he demonstrated superior knowledge of Doctor Who versus her knowledge of Big Brother.
In the Doctor Who Universe, she was killed by the Mandragora Helix on May 16th 2009, along with every presenter and contestant of Big Brother in the world. (NSA: Beautiful Chaos)