Bridget Riley is a well-known name in British art, famous for her black and white paintings that play upon the eye and are associated with Op Art. However, where does her work fit within the context of the development of abstract art more generally? In this talk, I look at the paths abstract painting took during this decade and how her work relates to international directions, as well as to London in the swinging '60s. Looking at her career overall, I also discuss how Riley’s colour paintings relate to nature and to a tradition of art found on the walls of the National Gallery.