Fletcher joined Brookside in 1990 and played the role of Jacqui Farnham (née Dixon) until the series ended in 2003. In addition to her role in Brookside, she has made a number of other television appearances, both in acting and presenting roles. These include parts in Doctors and MIT: Murder Investigation Team, and a guest presenting role on the chat show Loose Women. She was also an occasional presenter of the children's series Why Don't You?
She took some time away from acting in the late 2000s and trained as a fitness instructor. She qualified in 2009 and now teaches at a number of locations.
She also appeared as a contestant on the BBC cookery programme Celebrity Masterchef, on 21 July 2010.
Fletcher is married to the actor Neil Davies (who appeared in Brookside as Robbie Moffatt, an on-screen boyfriend in 2000 and 2001) and with whom she has a daughter, Yasmin, born in 2005. She also has a brother called Bradley. She lives with her husband and daughter in Merseyside.