Robert Holmes remembered his stewardship of the Pertwee era for its cognizance of the power of Mary Whitehouse's organisation. Indeed, others confirmed that Marsh tended to intervene in production when he thought the show was getting close to "dangerous ground". For instance, he made the costly step of reversing a casting decision on Colony in Space, because he thought having Susan Jameson in the role of Morgan might have sexual overtones. (REF: The Third Doctor Handbook) He likewise was keen to ensure that not be seen "raising Azal, the Dæmon, inside the village church, as it would offend too many people". And plans to kill off all the Thals in Planet of the Daleks were nixed for fear of Marsh's reaction.