Chelsea Halfpenny (born 26 September 1991) is an English actress. She portrayed Alicia Munroe on Casualty. She initially took up the role for eight episodes at the start of series 30, but returned in the series finale permanently. She departed in the show's 1112th episode Episode 20, which aired in January 2019. She previously appeared for a guest appearance as a patient in the series 18 episode "What Parents Do".