Nearly all of Cartier's 1950s television productions were performed
live, and the majority of them were not recorded — he once described them as being "gone with the speed of light." Several of those which do survive have been highly regarded by later reviewers. In 2000, the
British Film Institute (BFI) compiled a list of the
100 Greatest British Television Programmes of the 20th century. Voted on by a group of industry professionals, the list featured both
Nineteen Eighty-Four and
Quatermass and the Pit. In the accompanying analysis of each entry to the list,
Nineteen Eighty-Four was described as "An early example of the power of television drama... Even now, the torture sequences retain their power to shock and disturb."
Nigel Kneale, scriptwriter of both of the Cartier dramas acclaimed by the BFI, felt that the productions would not have been as successful as they were had they been handled by any other director. "I don't think any of the things I wrote then would have come to anything much in other hands. In his they worked." Television historian Jason Jacobs, a lecturer in
film and
television studies at the
University of Warwick, wrote in 2000 that Kneale and Cartier together created an entirely new, more expansive vision for British television drama in the 1950s.
"It was the arrival of Nigel Kneale... and Rudolph Cartier... that challenged the intimate drama directly. Cartier is rightly recognised as a major influence on the visual development of British television drama... Cartier and Kneale had the ambition for their productions to have an impact on a mass audience, and the scope of their attention was not confined to the 'cosy' aesthetics of intimacy. Cartier uses the close-up both to reveal emotions and as a shock device: a more threatening — and perhaps exhilerating — method than was used before. 'Intimacy' is reformulated by Cartier in terms of his power and control over the viewer — no longer a part of the family, but isolated in his home."
Cartier's pioneering use of an increased number of pre-filmed sequences to open out the studio-bound, live television drama productions of the 1950s is also praised by Lez Cooke. "While film inserts were being used in television drama from the early 1950s,
Nineteen Eighty-Four represented the most extensive use of them in a TV play up to that time, and signalled Cartier's determination to extend the boundaries of TV drama." Similarly, his
Times obituary stated that: "At a time when studio productions were usually as static as the conventional theatre, he was widely respected for a creative contribution to British television drama which gave it a new dimension."
In addition to his 1950s productions, several of Cartier's later works have also been regarded as influential. His 1962 production of
Wuthering Heights was praised by Dennis Potter, then a television critic, who wrote in the
Daily Herald newspaper that the production "was like a thunderstorm on the flat, dreary plains of the week's television... The howl of the wind against the windows, the muted pain of Claire Bloom as the wretched Cathy, and the hunted misery of Keith Mitchell as Heathcliff, made this a more than adequate offering of a great work." While
Screenonline states that
Lee Oswald — Assassin (1966) "could be argued [to be] of historical interest only," due to its basis in the flawed
Warren Commission report,
The Times praised it as being "possibly the first drama-documentary."
Not all of Cartier's work was so well regarded; in particular, his cinematic efforts have not achieved the level of praise of his television work. In the book
America's Best, Britain's Finest: A Survey of Mixed Movies, critic John Howard Reid says of Cartier's 1958 film
Broken Journey: "It's hard to believe that... anyone could make such a dull movie. Yet this is precisely what director Rudolph Cartier has done. I've never heard of Mr Cartier before or since but presumably he made this brief foray into films from that synthetic world of ugly close-ups—TV."
Speaking to
The Times in 1958, Cartier explained that television was still developing as a medium, and that part of his work was to help create the next generation of those who would produce television drama. "The BBC is producing producers as well as plays. They are feeling their way towards what television drama will one day be, and we are trying to create a generation of writers who study the medium." His 1994 obituary in the same newspaper judged that he had been successful in creating a lasting influence on later producers, describing his 1962 production of the opera
Carmen as "an example and inspiration to a younger generation of television producers."
In 1990, the
BBC Two arts magazine programme
The Late Show produced an edition which featured a retrospective of Cartier's work, including a new interview with the director discussing his career. This feature was repeated on BBC Two under the title
Rudolph Cartier: A Television Pioneer on
July 1 1994, followed by a tribute screening of the surviving
telerecording copy of the second performance of
Nineteen Eighty-Four.