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
Jackie Tyler Jackie Tyler Jackie Tyler is a fictional character played by Camille Coduri in the British science fiction television series "Doctor Who". The character, a resident of contemporary London, is introduced in the first episode of the 2005 revival as the mother of Rose Tyler, a travelling companion of the alien time traveller the Doctor. Jackie is a recurring character during the 2005 and 2006 series of the show, and later makes one-off appearances in 2008 and 2010. The character has also appeared in expanded universe material such as the "Doctor Who" New Series Adventures novels and the "Doctor Who Magazine"