Encounter some of the last century's most significant artists at the fair, including Pablo Picasso, Louise Bourgeois, Philip Guston, Andy Warhol, Joan Miró, Francis Bacon, Henri Matisse, Lee Kang-so and Helen Frankenthaler
The movement never quite took hold in the UK but, as a new exhibition at Dulwich Picture Gallery shows, British culture was – and remains – deeply surreal