Plot Summary:The fourth series gets underway with Rob in Yorkshire on the trail of a man once known as the 'Railway King'. George Hudson rose from farming origins to become Lord Mayor of York.
Rob Bell explores the lost landscapes of some of Britain's former railway lines. Season 4 Episode 1 - Walking Yorkshire's Lost Railways Season 4 Episode 2 - Walking Cornwall's Lost Railways Season 4 Episode 3 - Walking Kent's Lost Railways Season 4 Episode 4 - Northern Ireland