When was The Five Doctors produced ?
It saw Patrick Troughton and Jon Pertwee reprise their roles of the Second and Third Doctors respectively , whilst Richard Hurndall portrayed the First Doctor , as the character 's original actor William Hartnell had died since his last appearance on the show ten years previously in " The Three Doctors " , and unused footage of Tom Baker was used to portray the Fourth Doctor , as he declined to appear .