Frazer Hines
Hines' "Doctor Who" debut came in 1966, when he was cast to play the part of Jamie McCrimmon, the companion of the Second Doctor (played by Patrick Troughton). Originally intended as a one-off guest character, Jamie joined the regular cast and appeared in the series from 1966 to 1969. Hines reprised the role in a cameo in the 20th anniversary serial "The Five Doctors" (1983) and as a guest star in "The Two Doctors" (1985). Hines would appear in 117 episodes of "Doctor Who" in all—more than any other "companion" actor in the history of the series. The only actors appearing in more episodes are those who played the first four Doctors. Many of the episodes featuring Jamie no longer exist in the BBC's collection.
Doctor Who (season 26)
The twenty-sixth season of British science fiction television series "Doctor Who" began on 9 September 1989 with the serial "Battlefield", after a regular series of four serials was broadcast finishing with "Survival" which was the final episode of "Doctor Who" to air before a 16-year absence from episodic television following its cancellation.Sylvester McCoy and Sophie Aldred both continue their roles as the Seventh Doctor and Ace for their final season.Nicholas Courtney returned to play Brigadier Lethbridge-Stewart in "Battlefield". He first appeared with the Second Doctor in 1968 in "The Web of Fear" before becoming a recurring character throughout the Second Doctor to the Fifth Doctor and last appearing in "The Five Doctors" (1983).