A unique look inside over 70 signal boxes taken from Video 125's archive filmed over a period of 30 years. Features 'boxes of all shapes and sizes, all kinds of operating methods from 19th century mechanical lever frames to 20th century panels to 21st century state-of-the-art Rail Operating Centres.

Cast:Jonathan Kydd,

Genre:Documentary,

country:United Kingdom,

Production:Video 125,