To mark the 10th anniversary of 9/11 British artist Ben Turnbull has created a new set of collages: Supermen - An Exhibition of Heroes. Using superhero comic books for his collages, he has commemorated real-life heroes of that terrible day. Shown is Hero II (2010). His exhibition opens on 16 September at Eleven Fine Art gallery, 11 Eccleston Street, London, SW1W 9LX, and runs until 22 October (title link). CLICK for a Telegraph slide show.