London Underground workers are staging a 24-hour walkout in a continuing row over jobs and pensions.
Members of the RMT and Unite unions are on strike today, along with some of their Overground colleagues, shutting down large parts of the Tube network for the day.
Most buses across west and south-west London will also not run as a result of industrial action.
Read more: Who will strike in August and for how long?
The action is compressed between RMT strikes on Network Rail on Thursday and Saturday, as the deadlock between the unions and Transport Secretary Grant Shapps deepens.
Transport workers have called for a pay rise in line with inflation, as well as protection for jobs amid proposed government cuts.
RMT general secretary Mick Lynch said: “Tube bosses are in secret negotiations with the government to cut jobs and undermine working conditions and pensions, all in the name of removing subsidies.
“This government-led attack on staff will be catastrophic, as no other comparable urban transport system in the world operates without central government financial support to ensure good and reliable services.
“The government needs to stop trying to get services on the cheap by cutting jobs and wages, and invest in what should be a world-class transport network.”
Passengers are advised not to travel today.
A spokesman for the Department for Transport said: “It is clear that strikes are not the powerful tool they once were and union bosses are no longer able to bring the country to a standstill as, unlike them, the world has changed and people right and simply work from home.
“All these strikes do is hurt the people the unions claim to represent, many of whom will again be out of pocket and forced to miss a day’s work.
“We are calling on union bosses to do the right thing by their members and let them have their say on Network Rail’s very fair deal, which will deliver the reforms our rail system desperately needs. It is time to get off the strike and back around the negotiating table – the future of our railroad depends on it.”
Passengers using national rail services today will feel the hangover from Thursday’s strike, with the network scrambling to catch up to get trains where they need to be before continuing their journey.
Only one in five trains ran on Thursday, with many areas having no services at all, and the same is set to happen again on Saturday.
RMT boss Mick Lynch says ‘we will continue until we get a negotiated settlement’
Andy Lord, TfL’s chief operating officer, said: “I would like to apologize to our customers for the strike action being carried out by the RMT and Unite, which will have a significant impact on the city’s transport network.
“I understand how frustrating these strikes are and I would like to remind RMT and Unite that it is not too late to work with us, Arriva Rail London and RATP (which operate the London buses affected by the strike) to find a solution and avoid the huge disruption this action will cause to people’s travel and the economy.”
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A spokesperson for the Mayor of London, Sadiq Khan, said: “Discussions about TfL funding are ongoing with the Government, but TfL has been clear that no one has or will lose their jobs as a result of the proposals previously put forward and that any changes is always subject to full consultation with employees and unions.
“Sadiq has also been clear that the Government should not use TfL staff terms and conditions as a bargaining tool in funding negotiations.”
Transport Secretary Grant Shapps will speak to Sky News this morning at around 7am.