Since its first graphic poster commission in 1908, London Underground has developed a worldwide reputation for commissioning outstanding poster designs, becoming a pioneering patron of poster art - a legacy that continues today. Poster Art 150 will showcase 150 of the best designs which have been chosen by an independent panel. Visitors will be invited to vote for their favourites and the most popular poster will be revealed at the end of the exhibition. Well-known posters, including the surrealist photographer Man Ray’s ‘Keeps London Going’ pair, will feature alongside lesser-known gems. The exhibition will also offer a rare chance to view letter-press posters from the late nineteenth century.