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
Doctor Who Prom (2008) in the third and fourth series of "Doctor Who", presented the programme with guests Noel Clarke and Camille Coduri, who respectively played Mickey Smith and Jackie Tyler in the first, second and fourth series of the television programme. Catherine Tate, who played the Doctor's companion Donna Noble in the 2006 "Doctor Who" Christmas special and the fourth series of the programme, made a surprise guest appearance to introduce "Donna's Theme", not having been listed as being a presenter in the lineup. Sarah Walker presented BBC Radio 3's coverage of the concert. The full concert was rehearsed on Saturday, 26 July,