Ian Marter

Ian Marter left university in 1969 and joined the Bristol Old Vic as an acting stage manager. In 1970, producer Barry Letts considered him for the role of Captain Mike Yates in Terror of the Autons: Episode One (1971), but it ultimately went to Richard Franklin. However, Letts remembered him and two years later cast him as John Andrews in Carnival of Monsters: Episode One (1973).

When Jon Pertwee decided to leave the series during the following year, Letts considered casting an older actor in the part of the Doctor. This meant that any physical action sequences might have to be performed by a younger actor (in the role of a companion to the Doctor) and Marter was thus cast as Surgeon Lieutenant Harry Sullivan. When 40-year-old Tom Baker landed the role of the Doctor, Marter became surplus to requirements and was written out in Baker's second season by the new production team of Philip Hinchcliffe and Robert Holmes, who felt the Doctor only needed one companion.

Marter spent much of the rest of his life novelising Doctor Who (1963) stories for Target Books. He died suddenly and prematurely in 1986.