Rail commuters using on one of London's busiest lines were forced to exit the train this morning and walk along the track.
Further overhead wire problems were found on the East Coast Main Line in Hertfordshire which meant trains were unable to run between Stevenage and Hitchin.
Train companies were hoping to put buses on to operate between Letchworth/Biggleswade and Stevenage.
The continuing problem, which had led to hours-long delays to evening rush-hour commuters yesterday, affected passengers with four train companies - East Coast, First Capital Connect, First Hull Trains and Grand Central.
More top news
Last-minute Christmas shoppers have also been warned to watch out for icy pavements as the cold snap continues.
A registered childminder who left one baby with a serious brain injury and another with a broken leg has been jailed for 16 years.
An "urgent" review is being carried out by police after a rape prosecution collapsed when vital evidence was revealed at the last minute.