Watchdog calls for investigation after thousands trapped in trains in London

Network Rail's chief executive, on board one of the stranded trains, describes it as a painful experience'

London's passenger watchdog has called for an investigation after thousand of people were trapped on trains on Thursday evening when power lines were damaged.

Passengers, who were given little information during the ordeal, were stuck for more than three hours on dark, cold trains - including on Elizabeth line trains, which have no toilets and rely on the overhead lines for power.