made ▁sequence ▁produced ▁by ▁Billy ▁Hans h aw , ▁an ▁illustr ator ▁and ▁ 3 D ▁anim ator ▁from ▁Le eds , ▁who ▁posted ▁it ▁on ▁YouTube . ▁This ▁eventually ▁came ▁to ▁the ▁attention ▁of ▁Steven ▁M off at , ▁who ▁subsequently ▁based ▁the ▁official ▁sequence ▁on ▁Hans h aw ' s ▁work . ▁ ▁As ▁director ▁of ▁the ▁first ▁block , ▁Ben ▁Whe at ley ▁was ▁able ▁to ▁make ▁last ing ▁modifications ▁to ▁the ▁T ARD IS ▁set . ▁Whe at ley ▁had ▁the ▁cinemat ograph er ▁change ▁the ▁central ▁column ▁from ▁green ▁to ▁golden , ▁and ▁had ▁the ▁art ▁department ▁create ▁a ▁rep lica ▁of ▁Tommy ▁West ph all ' s ▁snow g lo be ▁from ▁St . ▁Else where , ▁which ▁Whe at ley ▁placed ▁in ▁the ▁T ARD IS ▁set ▁as ▁a ▁reference ▁to ▁the ▁theory ▁that ▁all ▁television ▁exists ▁in ▁a ▁shared ▁dream ▁reality . ▁ ▁Fil ming ▁In ▁August ▁ 2 0 1 3 , ▁actress ▁Jen na ▁Cole man ▁initially ▁announced ▁that ▁film ing ▁was ▁scheduled ▁to ▁begin ▁in ▁January ▁ 2 0 1 4 , ▁after ▁the ▁broadcast ▁of ▁Peter ▁Cap ald i ' s ▁initial ▁appearance ▁in ▁the ▁Christmas ▁special ▁that ▁would ▁contain ▁the ▁Doctor ' s ▁reg ener ation . ▁In ▁late ▁ 2 0 1 3 , ▁announ c ements ▁were ▁made ▁for ▁various ▁direct ing ▁appoint ments ▁for ▁the ▁new ▁series , ▁with ▁a ▁total ▁of ▁six ▁episodes ▁allocated ▁initially ; ▁in ▁October , ▁the ▁first ▁two ▁episodes ▁of ▁the ▁series