Chaos as Tube strike gets under way
There have been scenes of overcrowding at London Tube stations, as rush hour started early with workers trying to get home before a strike by London Underground workers.
Four trade unions have staged a 24-hour walkout in a row over the new all-night Tube service.
The strike, which officially began at 18:30 BST, will affect all Tube lines and finishes at 21:30 BST on Thursday.