 A week after he had written the Shadow Proclamation scenes, Davies decided to rewrite the scenes heavily because of monetary and script constraints. Tovey's cameo was replaced with a scene centred on the "Chief Constable" because he was unavailable for filming, much to Davies' disappointment. The Dalek invasion was also rewritten to the version broadcast after he decided a personal assassination of the Prime Minister was uncharacteristically "diplomatic", and recycled the Prime Minister's name for "The Next Doctor" He also expressed doubts about the Shadow Proclamation to Cook; he thought the Chief Constable was "terribly stripped down", but admitted the Shadow Proclamation was a vital element of the plot. He decided to correct the faults in the Chief Constable by renaming her the "Shadow Architect" (Kelly Hunter):
