▁Charlie ▁Knight . ▁Da ▁Silva ▁was ▁currently ▁film ing ▁the ▁fourth ▁season ▁of ▁W ent worth , ▁appearing ▁in ▁for ▁only ▁six ▁of ▁the ▁twelve ▁episodes ▁and ▁in ▁a ▁supporting ▁status , ▁due ▁to ▁her ▁new ▁st arring ▁role ▁in ▁Doctor ▁Doctor , ▁she ▁had ▁to ▁travel ▁between ▁Sydney ▁and ▁Melbourne ▁switching ▁between ▁roles . ▁It ▁also ▁seen ▁her ▁re connect ▁with ▁her ▁former ▁R ush ▁co - star , ▁Rod ger ▁Cor ser . ▁In ▁an ▁early ▁announ cement , ▁it ▁was ▁stated ▁that ▁additional ▁supporting ▁cast ▁would ▁consist ▁of ▁Ryan ▁Johnson , ▁Hay ley ▁Mc El hin ney , ▁Sh alom ▁Br une - Fran k lin , ▁T ina ▁B urs ill , ▁Ch lo e ▁Bay l iss ▁and ▁Dave ▁East gate ▁It ▁was ▁later ▁revealed ▁that ▁Steve ▁Bis ley ▁would ▁appear ▁in ▁the ▁series ▁as ▁Jim ▁Knight . ▁ ▁For ▁the ▁second ▁season ▁of ▁Doctor ▁Doctor , ▁it ▁was ▁announced ▁that ▁Pack ed ▁to ▁the ▁Ra fter s ▁star ▁Ang us ▁Mc L aren ▁would ▁join ▁the ▁cast ▁as ▁ex - ar my ▁medic , ▁Dr ▁To ke , ▁after ▁a ▁three - year ▁hi atus ▁from ▁acting ▁in ▁television , ▁while ▁it ▁had ▁also ▁been ▁confirmed ▁that ▁New ▁Zealand ▁actress , ▁Brit t any ▁Scott ▁Clark , ▁formerly ▁of ▁soap ▁opera ▁Short land ▁Street , ▁would ▁port ray ▁Nur se ▁M ia ▁Hol ston . ▁ ▁A head ▁of ▁Season ▁ 3 , ▁during ▁a ▁prom o ▁which ▁screen ed ▁in ▁June ▁ 2 0 1 8