created by (41 episodes, 2007-2011)
creator (12 episodes, 2010)
written by (2 episodes, 2010)
by (1 episode, 2007)
written by (20 episodes, 2007-2011)
by (2 episodes, 2007)
written by (16 episodes, 2007-2011)
(18 episodes, 2007-2011)
K9 originally created by (7 episodes, 2007-2009)
written by (6 episodes, 2008-2010)
Sontarans created by (4 episodes, 2008)
written by (4 episodes, 2009-2010)
(3 episodes, 2009-2010)
written by (2 episodes, 2007)
Sir Alistair created by (2 episodes, 2008)