Shirley Mollison is the wife of Howard Mollison and the mother or Miles and Patricia. She volunteers at the Southwest General Hospital. She was born in Yarvil, and it is implied that she was poor and that her mother was a prostitute. She dislikes her husband's business partner Maureen Lowe and her daughter-in-law Samantha, as well as anyone she sees as an enemy of her husband, such as Barry Fairbrother.
She is the administrator of the Pagford Parish Council website, and as such, is charged with removing the messages left by the anonymous users calling themselves "The_Ghost_Of_Barry_Fairbrother."