Nicola Walker (born 15 May 1970) is an English actress, known for her starring roles in various British television programmes from the 1990s onwards, including that of Ruth Evershed in the spy drama Spooks from 2003 to 2011. She has also worked in theatre, radio and film.

• River (2015)

  
• The Circuit (2016)

  
• Inside Men (2012)

  
• Spooks (2002)

  
• Unforgotten (2015)