13:00Andy PotterDerbyshire's Blue John and Derby author Roger SprostonBBC Radio Derby Duration: 3 hours Fri 24th Jul 2015, 13:00 on BBC Radio DerbyDerby author Roger Sproston tells us about his adventures which have seen him dodging bullets in Iran and living from a skip in San Fransisco.GenresEntertainmentBrandAndy Potter Source: BBC Online