s ▁previous ▁appearances ▁in ▁the ▁Wh on iverse : ▁ ▁Writing ▁ ▁Chris ▁Ch ib n all , ▁who ▁has ▁written ▁five ▁previous ▁episodes ▁of ▁Doctor ▁Who , ▁and ▁a ▁few ▁for ▁Tor ch wood , ▁indicated ▁in ▁April ▁ 2 0 1 3 ▁that ▁he ▁had ▁been ▁approached ▁by ▁M off at ▁to ▁contribute ▁to ▁Series ▁ 8 . ▁The ▁subsequent ▁success ▁of ▁his ▁drama ▁series ▁Broad ch urch , ▁has ▁led ▁to ▁Ch ib n all ▁stating ▁that , ▁while ▁still ▁willing ▁to ▁write ▁for ▁Doctor ▁Who , ▁his ▁schedule ▁may ▁mean ▁it ▁not ▁being ▁possible ▁for ▁this ▁up coming ▁series . ▁ ▁Neil ▁Cross , ▁who ▁wrote ▁two ▁episodes ▁in ▁Series ▁ 7 , ▁has ▁also ▁stated ▁a ▁desire ▁to ▁write ▁for ▁Series ▁ 8 . ▁Cross ▁confirmed ▁that ▁he ▁would ▁be ▁writing ▁at ▁least ▁one ▁episode ▁for ▁Series ▁ 8 ▁in ▁August ▁ 2 0 1 3 , ▁while ▁Neil ▁Ga iman , ▁who ▁contributed ▁one ▁episode ▁to ▁Series ▁ 6 ▁and ▁another ▁episode ▁to ▁Series ▁ 7 , ▁and ▁Frank ▁C ott rell - Bo y ce ▁also ▁stated ▁that ▁they ▁were ▁developing ▁scripts . ▁However , ▁neither ▁were ▁able ▁to ▁confirm ▁initially ▁whether ▁these ▁would ▁be ▁for ▁Series ▁ 8 ▁or ▁a ▁subsequent ▁series . ▁On ▁ 4 ▁July ▁ 2 0 1 4 , ▁it ▁was ▁confirmed ▁Boy ce ▁would ▁also ▁write ▁an ▁episode . ▁ ▁G are th ▁Roberts , ▁who ▁has ▁written ▁five ▁previous ▁episodes ▁of ▁Doctor ▁Who , ▁has ▁been ▁confirmed ▁to ▁be