Investigation launched after Jubilee delays
Freezing weather this weekend may have been the cause of severe delays which blighted the Jubilee line on Monday.
Engineers were replacing over half a kilometre of track on the outside section of the line this weekend and it's being looked into whether temperatures in the minuses impacted on the new equipment.
The line was suspended between Willesden Green and Stanmore all morning, while the rest of the service was running with severe delays, affecting on the journeys of thousands of commuters.
Work has now been completed and Transport for London said the service should be running fine by the evening commute.
Chief operating officer of London Underground Howard Collins said: "I would like to apologise to passengers who were affected by the delay in services.
"We will be carrying out a thorough investigation into what caused the works to overrun."
Politicians, including Caroline Pidgeon, leader of the Liberal Democrat London Assembly Group and chair of the London Assembly Transport Committee, were critical of the problems.
She said: "Once again on a Monday morning commuters in many parts of London are facing chaos and disruption.
"It is time that long-suffering passengers were properly compensated for the misery, especially on the Jubilee line over so many years."