This article covers a subject that is part of the real world, and thus should not be taken as a part of the Holby universe.
Catherine Ellen "Cathy" Shipton (born 27 March 1957) is an English actress known for portraying Lisa "Duffy" Duffin on Casualty since 1986 in both main and guest roles. Her recent guest appearances include when she returned for the 30th series premiere two-parter. She made a guest appearance in the 1000th episode, "History Repeating", and returned as a series regular at the start of series 31.
She also appeared as the character in Holby City in 1999.