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
Rose (Doctor Who episode) from 28 to 30 July. From 2 to 3 August, service tunnels in the basement of a hospital in Cardiff were used for the basement of Henrik's where Rose is menaced by Autons. The pizza restaurant is La Fosse. It took the production team a while to find a restaurant that would require minimal set dressing but would be willing to close for a day. The team filmed at La Fosse on 22 August. The area underneath the London Eye where the Doctor and Rose confront the Nestene Consciousness was filmed in an unused paper mill in Grangetown, Cardiff. It