Doctor Who (series 4) Astrid Peth, who died during the events of the episode. The companions in the regular series had all been in the lead companion role previously: the primary role of Donna Noble, who was introduced in "The Runaway Bride", was played by Catherine Tate for all thirteen episodes. Her return was announced by the BBC on 3 July 2007. Freema Agyeman, who portrayed the Doctor's companion Martha Jones in series three, returned for "The Sontaran Stratagem", "The Poison Sky", "The Doctor's Daughter", "The Stolen Earth" and "Journey's End". Billie Piper, who played Rose Tyler from the first episode of the new
Tooth and Claw (Doctor Who) was a young Scottish piper from the 18th Century, and a companion of the Second Doctor. In the scene where the Doctor and Rose meet the Queen's guards, the Doctor slips into a Scottish accent, which is actually actor David Tennant's native accent. Michelle Duncan and Jamie Sives were unable to attend the readthrough for this story, and their parts were read by Tennant's parents, who happened to be visiting the "Doctor Who" set. Tennant told reporters at the series' press launch, "Because it's set in Scotland they were delighted to be asked to read in. My mum played Lady