▁it ▁would ▁otherwise ▁lack . ▁Due ▁to ▁the ▁success ▁of ▁the ▁first ▁season , ▁The ▁Knight ' s ▁home , ▁which ▁was ▁fil med ▁in ▁an ▁actual ▁house , ▁was ▁re created ▁within ▁a ▁dis used ▁wing ▁of ▁the ▁building ▁used ▁to ▁film ▁the ▁hospital ▁scenes ▁from ▁the ▁second ▁season ▁on wards ; ▁this ▁was ▁due ▁to ▁limited ▁space ▁in ▁the ▁original ▁home . ▁ ▁In ▁ 2 0 1 7 , ▁Ian ▁Col lie ▁depart ed ▁Ess ential ▁Media ▁in ▁order ▁to ▁establish ▁his ▁own ▁production ▁company , ▁E asy ▁T iger ▁T iger , ▁from ▁which ▁Doctor ▁Doctor ▁is ▁currently ▁produced ▁under ▁as ▁of ▁its ▁second ▁season . ▁The ▁company ▁is ▁majority ▁owned ▁by ▁F rem ant le Media . ▁ ▁Th eme ▁song ▁ ▁The ▁theme ▁song ▁is ▁a ▁cover ▁version ▁of ▁the ▁American ▁band ▁C anned ▁He at ▁song ▁Go ing ▁Up ▁the ▁Country , ▁performed ▁by ▁P atience ▁H od g son ▁of ▁the ▁Australian ▁ind ie / altern ative ▁rock ▁band ▁The ▁Gr ates . ▁The ▁song ▁is ▁not ▁available ▁for ▁international ▁air ings ▁of ▁the ▁series ▁as ▁the ▁opening ▁theme ▁is ▁replaced ▁with ▁the ▁same ▁instrument al ▁music ▁which ▁is ▁used ▁over ▁the ▁end ▁cred its . ▁ ▁Broadcast ▁ ▁Doctor ▁Doctor ▁was ▁broadcast ▁on ▁the ▁N ine ▁Network ▁on ▁Wed nes day ▁night s ▁ 8 . 4 0 ▁pm ▁during ▁its ▁first ▁two ▁seasons ; ▁it ▁was ▁moved ▁to ▁Monday ▁night s ▁at ▁ 8 . 4 0 ▁pm ▁for ▁its ▁third ▁season .