Born in Sheffield, Yorkshire, she is best known for her television work. Her credits include: Dixon of Dock Green, Steptoe and Son, The Avengers (in which she appeared in three episodes: The Nutshell, The Master Minds and Who's Who?), Danger Man, Public Eye, The Baron, Softly, Softly, Adam Adamant Lives!, The Champions, The Saint, Department S, Randall and Hopkirk (Deceased), Up Pompeii! (as "Pussius Galoria" in an episode entitled Jamus Bondus), Emmerdale Farm, Special Branch, The Protectors and Within These Walls.
Patricia Haines died from lung cancer in 1977.