Doctor Who show, as the story begins anew with each companion and she undergoes more change than the Doctor. The primary companions of the Ninth and Tenth Doctors were Rose Tyler (Billie Piper), Martha Jones (Freema Agyeman), and Donna Noble (Catherine Tate) with Mickey Smith (Noel Clarke) and Jack Harkness (John Barrowman) recurring as secondary companion figures. The Eleventh Doctor became the first to travel with a married couple, Amy Pond (Karen Gillan) and Rory Williams (Arthur Darvill), whilst out-of-sync meetings with River Song (Alex Kingston) and Clara Oswald (Jenna Coleman) provided ongoing story arcs. The tenth series introduced Pearl Mackie as
Journey's End (Doctor Who) Next Doctor", but Davies was convinced by Benjamin Cook (who was corresponding with Davies for the book "Doctor Who: The Writer's Tale") to drop the scene, as he felt that a cliffhanger was not appropriate after such a sad ending. Castell Coch, situated minutes away from "Doctor Who"'s Upper Boat Studios, is used as the German castle. The beach at Southerndown, a few miles west of Cardiff, is used once more as Norway's fictional Dårlig Ulv Stranden (Bad Wolf Bay). Some exterior scenes, including various companions interacting with Daleks, were shot at Arcot Street, Penarth. Mickey Smith and Jackie Tyler