Crunch talks aimed at preventing a 24-hour Tube strike happening on Thursday 5 October continued today after failing to reach an agreement so far.
Transport for London (TfL) and train drivers' union Aslef have been holding talks at conciliation service Acas over a dispute regarding working conditions, with TfL warning that if the walkout goes ahead, the whole Tube network will be severely disrupted.
There will be no service on most of the Tube network for the entire day.
Additionally, the transport body has warned that there could be a knock-on impact for services on Wednesday 4 October and Friday 6 October. Some Tube services may finish earlier, from 11.30pm on the Wednesday, and start later on the Friday.
The row is because Aslef said London Underground had failed to deliver on commitments to improve work/life balance made as part of a 2015 pay settlement. TfL has been working with Aslef and the Rail, Maritime and Transport (RMT) union which has raised concerns over the issue but has not balloted members, to trial a four-day working week on the Jubilee Line.
The trial finished earlier this month and TfL said it planned to analyse the results with both unions.
Aslef's organiser on the London Underground, Finn Brennan, said London Underground had "refused to make any detailed proposals" on allowing drivers to reduce the number of shifts they worked.
Nigel Holness, director of network operations, said: "We are committed to ensuring that our employees are able to maintain a good balance between their work and personal lives and we have been working closely with the unions to explore new ways to achieve this. I encourage Aslef to continue working with us constructively rather than moving towards unnecessary strike action."