Derek Martinus (born Derek Buitenhuis; 4 April 1931 – 27 March 2014) was a British television and theatre director. Originally an actor, he directed episodes of Z-Cars and Doctor Who, for which he was best known. He also had a long career directing stage productions. Early life and acting career Born in Ilford, Essex, the son of Jack and Irene Buitenhuis, Martinus used his Rotterdam-born grandfather's middle name for his professional name. Martinus was educated at Brentwood School, Essex. After national service in the Royal Air Force, he studied directing and acting at the University of Oklahoma and Yale School of Drama. After running out of money, he returned to the UK in the mid-1950s and worked as an actor for the Library Theatre, Manchester and other repertory theatres. He played at the Royal Court and on tour, with among others, Sir Donald Wolfit. He subsequently joined the Arena Theatre Company, where he worked as both an actor and director. In 1959 he did a study tour of Scandinavian theatre and met his future wife, Eivor – who was only sixteen at the time – in Gothenburg. He directed some 20 plays at The Pembroke Theatre-in-the-round from 1959 until the theatre closed because of road widening. His two best received parts were Monsewer in Brendan Behan's The Hostage and Malvolio in Twelfth Night which he played on several occasions. Between jobs in the theatre he did several productions at the Royal Academy of Dramatic Art and the Guildhall School of Music and Drama. Directing career and later life For BBC he directed several Doctor Who serials, Galaxy 4 (1965), Mission to the Unknown (1965), The Tenth Planet (1966), The Evil of the Daleks (1967), and The Ice Warriors (also 1967). His final serial for the programme, Spearhead from Space (1970), was also the first to be made in colour. His period working on the programme spanned the eras of the first three actors to play the lead role. Martinus believed the Daleks had to be shot "very carefully and from exactly the right angle". "If you shoot them without care they do look rather tame and ordinary," he explained in an interview for a series fan site. "You had to build up a Dalek's entrance. I used to make them lurk in the shadows." Martinus also directed the Blake's 7 episodes "Trial" and "The Keeper" (both 1979) and over 50