LONDON, UNITED KINGDOM - SEPTEMBER 09: The projection on the gallery wall of painting 'The Spiritual Form of Nelson Guiding Leviathan' (c.1805–9) by British artist William Blake (1757-1827) during a photocall to promote the upcoming exhibition at the Tate Britain, on 09 September, 2019 in London, England. The exhibition presents the largest survey of work by William Blake in the UK for a generation, bringing together over 300 remarkable and rarely seen works of the visionary painter, printmaker and poet.