Shutdown on safety row Tube line An entire London Underground line has been shut down amid safety concerns.
Services on the Northern Line, which carries 660,400 people every weekday, have been suspended and may remain closed on Thursday.
Union bosses called for trains to be withdrawn on Wednesday, after one ran through a red light at Mill Hill East, and its emergency brakes failed.
It was the fifth incident on the line, and dozens of drivers are refusing to work on safety grounds.
Commuters using the Northern Line, one of the busiest on the Tube network, have suffered delays all week, because of concerns over the brakes.
http://news.bbc.co.uk/1/hi/england/london/4335994.stm