RMT: Jubilee line pretty much closed due to signal failure affecting three quarters of a million passengers. @itvlondon
RMT's Bob Crow: Breakdown once again raises serious questions about the automated operating system on that service. @itvlondon
More top news
Londoners who have received new electronic gadgets for Christmas are being advised to take simple steps to protect them from thieves.
The Boxing Day sales got off to a flying start with shops reporting a surge in business during the first hour of trading.
Bus strikes are planned for Monday 29 December and Monday 5 January.