Katy Jane Carmichael (born 5 March 1970) is an English actress, director, and producer. She is most known for her roles as DC Jo McMullen in the ITV crime drama series, "Liverpool 1", from 1998 to 1999; Twist Morgan in the Channel 4 sitcom, "Spaced", from 1999 to 2001; Lucy Barlow in the long-running ITV soap opera, "Coronation Street", from 2002 to 2003; and Melissa Ryan in the BBC One school-based drama series, "Waterloo Road", during 2009.