JMW Turner appears on £20 notes and gives his name to Britain’s most avant garde contemporary art prize. John Constable’s work adorns countless mugs and jigsaws. Both are emblematic English artists, but in the popular imagination, Turner is perceived as daring and dazzling, Constable as nice but a little bit dull. In a Radio 4 poll to find the nation’s favourite painting, Turner’s The Fighting Temeraire – which even features in the James Bond film Skyfall – won. Constable’s The Hay Wain came second. Born only a year later, Constable was always playing catch-up: Turner became a member of the Royal Academy at 27, while Constable had to wait until he was 52.

To mark the 250th anniversary of their births, Tate Britain is putting on the first major exhibition to display the two titans head to head. Shakespeare and Marlowe, Mozart and Salieri, Van Gogh and Gauguin – creative rivalries are the stuff of biopics. Mike Leigh’s 2014

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