Secrets of the Northern Line
- Episode aired Apr 16, 2013
- 5m
This time, Geoff Marshall takes us on a tour of the Northern Line, looking for unusual features including unfinished platforms, secret escalators, fibbing signs and even a plastic owl.This time, Geoff Marshall takes us on a tour of the Northern Line, looking for unusual features including unfinished platforms, secret escalators, fibbing signs and even a plastic owl.This time, Geoff Marshall takes us on a tour of the Northern Line, looking for unusual features including unfinished platforms, secret escalators, fibbing signs and even a plastic owl.