1910 - Manet and the Post-Impressionists, organized by Roger Fry

'Manet and the Post-Impressionists' was the show organised by the critic Roger Fry at London's Grafton Galleries (London, 8 November 1910–11 January 1911) that introduced England to the work of Seurat, Van Gogh, Gauguin and Cézanne, all of whom were dead by then. It was a public and critical disaster, yet it became one of the most important moments in the history of modern art. (https://www.bl.uk/20th-century-literature/articles/culture-quake-the-post-impressionist-exhibition-1910)