The City branch of London Underground’s Northern Line, which was closed for nine weeks over the summer for an £18m refurbishment, was shut down just 75 minutes after it reopened on Monday because of a suspected fire.
LU later said it was `not really a fire, rather a smell of smouldering’ caused by a broken power rail, which partly severed a cable and tore power pick-up shoes off several trains.
By Wednesday LU said the problems had been resolved and all but nine trains were back in service.
The refurbishment was designed to cut two-and-a-half minutes off the journey between Kennington and Moorgate, by allowing trains to travel at 25mph instead of 15mph on parts of the route.
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