Polly Alexandra Walker (born 19 May 1966) is an English actress. She has starred in the films Enchanted April (1992), Patriot Games (1992), Sliver (1993), Restoration (1995), The Gambler (1997) and Savage Messiah (2002). In 2006, she received a Golden Globe Award nomination for her role in the drama series Rome (2005–07).