Hollywood from David O. Selznick which was rejected by Dickinson. A film biography of Disraeli, The Prime Minister (1941), starring John Gielgud, was disowned by its director, but The Next of Kin (1942), expanded from what was originally intended as a training film, is described by Philip Horne as "one of the most interesting, and thrillingly ruthless, propaganda films of the War". Men of Two Worlds (1946), from a script by novelist Joyce Cary starring Robert Adams, attempted to "tell an African story from the point of view of an African". It was though a difficult production; the crew lost equipment and film stock. For The Queen of Spades (1949) Dickinson assumed responsibility at five days notice after he was recommended by actor Anton Walbrook, the star of Gaslight, when the production was close to collapse. Following an aborted attempt to adapt Thomas Hardy's The Mayor of Casterbridge in time for the Festival of Britain, he returned to Secret People (1952), a long cherished project which Ealing Studios took up, but this was unsuccessful at the box-office and became Dickinson's last British-made feature film. Secret People was notable for providing Audrey Hepburn with her first supporting film role. Performing all her own ballet moves during the dance sequences, Dickinson went on to film the screen test of Audrey which led to international stardom. In the screen test, she describes how she used to dance for audiences to raise funds for the resistance in The Netherlands during the Second World War. The screen test was sent to director William Wyler and led to her casting as Princess Ann in Roman Holiday. In Israel, Dickinson directed a short film for the Israeli Army, The Red Ground (1953), and an English-language feature, Hill 24 Doesn't Answer (1955), for which he reworked the screenplay in collaboration with his wife Joanna. Dickinson's other work outside the UK included a tenure with the United Nations Department of Public Information as Chief of Film Services from 1956 to 1960. In 1959 he was a member of the jury at the 1st Moscow International Film Festival. After his work with the United Nations, Dickinson devoted the final part of his life to teaching about film. In 1960 he established the film studies department at the Slade School of Fine Art, University College London, where one of his first students was Raymond Durgnat, the prominent film critic. Others included