als ▁started ▁production ▁in ▁April ▁ 2 0 0 8 ▁for ▁" The ▁Next ▁Doctor ", ▁and ▁film ing ▁for ▁the ▁final ▁special ▁" The ▁End ▁of ▁Time " ▁began ▁in ▁March ▁ 2 0 0 9 . ▁Two ▁supp lement al ▁episodes ▁were ▁also ▁fil med ▁alongside ▁the ▁spe ci als . ▁" Music ▁of ▁the ▁S pher es " ▁was ▁fil med ▁for ▁the ▁ 2 0 0 8 ▁Doctor ▁Who ▁Prom ▁in ▁July ▁ 2 0 0 8 , ▁and ▁the ▁animated ▁six - ep is ode ▁serial ▁Dream land ▁was ▁produced ▁for ▁the ▁BBC ' s ▁Red ▁Button ▁service , ▁which ▁was ▁released ▁over ▁six ▁consecutive ▁days ▁in ▁November ▁ 2 0 0 9 . ▁Mid way ▁through ▁the ▁sequence ▁of ▁spe ci als ▁( com men cing ▁with ▁" Plan et ▁of ▁the ▁Dead "), ▁production ▁switched ▁to ▁film ing ▁in ▁high - definition . ▁ ▁The ▁spe ci als ▁included ▁appearances ▁of ▁one - off ▁compan ions , ▁port rayed ▁by ▁David ▁Morris sey , ▁Vel ile ▁T sh ab al ala , ▁Mich elle ▁Ryan , ▁L inds ay ▁Dun can ▁and ▁Bernard ▁C rib b ins , ▁as ▁well ▁as ▁featuring ▁cast ▁from ▁previous ▁seasons , ▁including ▁Catherine ▁T ate , ▁Bill ie ▁Pi per , ▁Fre ema ▁A gy eman , ▁No el ▁Clar ke , ▁John ▁Bar row man , ▁Elisabeth ▁S lad en ▁and ▁John ▁Sim m . ▁After ▁the ▁fourth ▁series ▁was ▁the ▁final ▁full ▁series ▁to ▁star ▁David ▁T enn