King is known to the British public for her portrayal of Amelie in Wide Sargasso Sea, the 1993 film adaption, directed by John Duigan, of Jean Rhys's 1966 novel of the same name; and as Rachel Morris in Director Julian Richards' 1996 horror film Darklands. Her role as "attendant to Gertrude" in Kenneth Branagh's four-hour screen version of Hamlet drew on King's Shakespearean background, but provided her with relatively little screen time. In 2006 she had a secondary role as Heather in Peter Levin's A Perfect Day, starring Rob Lowe and Christopher Lloyd. In 2007 she appeared as Angelica in Rob Reiner's The Bucket List with Morgan Freeman and Jack Nicholson. King's television credits include guest roles in Grey's Anatomy, Eli Stone, Nip/Tuck, Lie to Me, Death in Paradise, among others; and recurring roles in Breaking News, Half & Half and The Wrong Mans.