Caroline Paterson (born 28 November 1965 in Kirkcaldy, Scotland) is a Scottish actress who has appeared in many Scottish television shows such as one-off STV drama, The Steamie and the BBC's Rab C. Nesbitt. However, she is most recognized for her role in EastEnders as Mark Fowler's wife, Ruth. She also appeared as Patricia Cullen in BBC Scotland soap River City.In 2005 she had a one episode appearance in the BAFTA award winning BBC series spooks as Jessica Mortimer.