 Henthorn was born in Oldham, Lancashire.Her roles before "Coronation Street" included parts in series such as "The Booze Cruise", in which she played Cath Bolton, "Doctors" and "Heartbeat".She also played Julie Haye in "EastEnders" in 1997–1998 and Marissa Platting (Series 2 Social Worker) in the television series "Shameless".