London Underground passengers face travel chaos today after staff on two major lines began a 24-hour strike.
Both the Central Line and Waterloo and City Line are suspended after members of the Aslef union walked out in a dispute over a sacked driver.
Authorities had hoped to avert industrial action but last minute Acas talks failed.
Services on both lines are expected to be affected until tomorrow, with TFL warning customers they faced delays.
TFL Rail tweeted: ‘Some customers may experience crowd control at some of our stations this morning due to the large volume of Central line passengers using our lines.
‘Apologies for any inconvenience this may cause you today.’
Commuters will be hit with further delays as RMT union train guards on South Western Railway (SWR) are also walking out for 48 hours.
All strikes began at midnight and are expected to inconvenience up to 800,000 passengers.
Aslef official Finn Brennan said its members were upset over the delay of a review of a sacked train driver who they feel was let go unfairly.
He said: ‘Aslef asked that this case be reviewed on August 2 and repeatedly requested that this review be brought forward.
‘Instead of trying to resolve this dispute, management are engaged in macho posturing that does a real disservice to all those who will be inconvenienced by the strike on Friday.
‘The issues at the heart of this dispute are about people being treated fairly and with dignity at work.’
Nigel Holness, director of network operations for London Underground, called the strike needless and said he was disappointed with Aslef’s decision after initial positive talks.
He added: ‘In those discussions we have made good progress on resolving most of their issues, but have not been able to agree on the reinstatement of a train driver who was dismissed for a serious breach of our safety regulations.
‘The safety of our customers and staff is paramount and something we will never compromise.
‘We remain open for discussions on how to resolve this dispute, and apologise to our customers for the unnecessary disruption.’
Aslef union also plan to strike again on November 7 if the matter is not resolved.