The story of the Pitmen Painters, a group of Northumbrian miners who decided to study art appreciation in their spare time and developed into a group of untrained but powerfully expressive artists, has been documented in a book by William Feaver and a play by Lee Hall. Robson Green's particular interest in the story stems from the fact that he's a miner's son, brought up in Dudley, a few miles south of the pitmen's hometown of Ashington.