Changes

*Zoe Heriot (Wendy Padbury)

*Zoe Heriot (Wendy Padbury)

==Companions of the Third Doctor==

===Companions of the Third Doctor===

*Liz Shaw (Caroline John)

*Liz Shaw (Caroline John)

*Jo Grant (Katy Manning) - Appeared in ''The Sarah Jane Adventures'' story, ''Death of the Doctor'' with the Eleventh Doctor

*Jo Grant (Katy Manning) - Appeared in ''The Sarah Jane Adventures'' story, ''Death of the Doctor'' with the Eleventh Doctor

*Sergeant John Benton (John Levene)

*Sergeant John Benton (John Levene)

*Captain Mike Yates (Richard Franklin)

*Captain Mike Yates (Richard Franklin)

==Political and Social Themes==

==Political and Social Themes==