In which of these films did Jenny Agutter begin her acting career?

Jennifer Ann Agutter OBE (born 20 December 1952) is an English actress. She began her career as a child actress in 1964, appearing in "East of Sudan", and two adaptations of "The Railway Children"; the BBC's 1968 television serial and the 1970 film version. In 1971 she also starred in the critically acclaimed film "Walkabout"and the TV film "The Snow Goose", for which she won an "Emmy Award for Outstanding Supporting Actress in a Drama".

She relocated to the United States in 1974 to pursue a Hollywood career and subsequently appeared in "Logan's Run" (1976), "Amy" (1981), "An American Werewolf in London" (1981), and "Child's Play 2"(1990).

After returning to Britain in the early 1990s to pursue family life, Agutter shifted her focus to television, appearing in the 2000 version of television adaptation of "The Railway Children", this time as the mother, and since 2012 she has had an ongoing role in the BBC's "Call the Midwife".

"East of Sudan" is a 1964 British adventure film directed by Nathan Juran and featuring Anthony Quayle (Private Richard Baker), Sylvia Syms (Miss Margaret Woodville), Derek Fowlds (Murchison) and Jenny Agutter (Asua).

During the Mahdist insurrection in the Anglo-Egyptian Sudan, veteran colonial private Baker teams up with freshly arrived gentleman Murchison, trying to evacuate from southern Barash the emir's daughter Asua and her English governess, Miss Woodville.