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.
Victoria Waterfield
Victoria Waterfield is a fictional character played by Deborah Watling in the long-running British science fiction television series "Doctor Who". A native of Victorian England, she was a companion of the Second Doctor and a regular in the programme from 1967 to 1968. Only two complete serials to feature her exist in the BBC archives ("The Tomb of the Cybermen" and "The Enemy of the World"). DVDs of her adventures "The Ice Warriors" and "The Web of Fear" were also released, where official BBC reconstructions complete the missing episodes of those serials.