amp ed ▁Doctor ▁Who , ▁the ▁British ▁media ▁regularly ▁released ▁conflic ting ▁reports ▁about ▁how ▁long ▁Pi per ▁would ▁be ▁stay ing ▁with ▁the ▁show . ▁In ▁March ▁ 2 0 0 6 , ▁she ▁claimed ▁that ▁she ▁would ▁continue ▁on ▁Doctor ▁Who ▁into ▁its ▁third ▁series ▁in ▁ 2 0 0 7 . ▁In ▁May , ▁however , ▁she ▁was ▁reported ▁to ▁be ▁considering ▁qu itting ▁the ▁series , ▁although ▁she ▁did ▁express ▁an ▁interest ▁in ▁playing ▁a ▁female ▁version ▁of ▁the ▁Doctor ▁in ▁the ▁future ▁( poss ibly ▁related ▁to ▁a ▁proposed ▁Doctor ▁Who ▁spin - off ▁series ▁about ▁Rose , ▁which ▁was ▁later ▁dropped ). ▁In ▁June , ▁the ▁BBC ▁announced ▁that ▁she ▁was ▁to ▁depart ▁in ▁" Do oms day ", ▁the ▁final ▁episode ▁of ▁the ▁second ▁series . ▁Her ▁decision ▁to ▁leave ▁had ▁been ▁made ▁a ▁year ▁previously , ▁but ▁remained ▁a ▁secret ▁until ▁news ▁of ▁her ▁departure ▁became ▁public . ▁Although ▁Pi per ▁was ▁absent ▁in ▁the ▁ 2 0 0 7 ▁series , ▁her ▁character ▁Rose ▁was ▁mentioned ▁several ▁times ▁and ▁seen ▁in ▁archive ▁foot age ▁on ▁some ▁occasions . ▁In ▁November ▁ 2 0 0 7 , ▁the ▁BBC ▁confirmed ▁that ▁she ▁would ▁repr ise ▁her ▁role ▁as ▁Rose ▁Ty ler ▁in ▁the ▁fourth ▁series ▁of ▁Doctor ▁Who ▁for ▁three ▁episodes . ▁Later , ▁it ▁was ▁confirmed ▁by ▁Russell ▁T . ▁Dav ies ▁in ▁Doctor ▁Who ▁Magazine ▁that ▁this ▁return ▁had ▁been ▁planned ▁since ▁she ▁left . ▁It ▁was ▁also ▁revealed ▁in ▁Doctor ▁Who ▁Conf