 Actor Tom Baker (I) (qv) declined to return as the fourth Doctor,  feeling there hadnt been a long enough gap between him leaving the  role and shooting commencing. He was represented on screen with  previously unseen excerpts from Shada, an unfinished story from  his tenure. For publicity shots featuring all five Doctors together,  the BBC used Tom Bakers mannequin from Madam Tussauds waxwork  collection in London.