Gethin Jones (in-universe)

Gethin Jones (born 12th February 1978) has been a presenter for Blue Peter since 2005. In 2009 Maria Jackson watched an episode with him on it. (SJA: Invasion of the Bane)

In Doctor Who
Gethin Jones played a Cyberman in Rise of the Cybermen and The Age of Steel. In 2008 Gethin played a Dalek in The Stolen Earth and Journey's End

making him the first person to play a Dalek and Cyberman