Jon Pertwee considered the Draconians to be his favourite monster as the rubber and latex masks used allowed the actors playing them to employ a full range of facial expressions. Recalling the production of this story he noted that filming near the Haywood Gallery at the South Bank was made difficult due to a number of "homeless people and drunks" lying around the area. According to Pertwee, Paul Bernard asked the stuntmen and actors who were on location in costume as Ogrons to ask these people to move to allow filming to proceed.