Sarah-Jane Potts (born 30 August 1976) is an English actress, best known for her roles as Molly in the American college-based drama series, "Felicity", from 2000 to 2001; 'Saint' Sarah in the Channel 4 comedy-drama series, "Sugar Rush", during 2006; Ellie in the BBC One medical drama series, "Casualty", during 2008; Jo Lipsett in the BBC One school-based drama series, "Waterloo Road", from 2009 to 2010; and Eddi McKee in the BBC One medical drama series, "Holby City", from 2011 to 2012. She has also acted in other British television series such as "Children's Ward", "The Bill", "Peak Practice", "Emmerdale", and "Doctors".