Alice Troughton
From Tardis Wiki, the free Doctor Who reference
Alice Troughton has directed several episodes of Doctor Who, The Sarah Jane Adventures and Torchwood. She is not related to the actor who played the Second Doctor actor, Patrick Troughton or his son David Troughton.
Filmography
Torchwood
The Sarah Jane Adventures
Doctor Who
A shot of Billie Piper that Troughton directed for Midnight was also used in The Poison Sky, however she received no screen credit in that episode.