Rail passengers have been urged to only travel if “absolutely necessary” today as members of four trade unions stage a 24-hour walkout.

The latest strike by members of the Rail, Maritime and Transport union (RMT), Aslef, Unite and the Transport Salaried Staffs’ Association (TSSA) is expected to cause the worst rail disruption of the year so far.

A reduced timetable shows that just 11% of rail services will run today.

Read more: Rail strikes – Dates for October disruption and which lines are affected

Trains will start later in the morning and finish earlier in the evening and there will be no trains at all across large parts of the network.

Transport for London said some of its services will be affected, with no service expected on London Overground.

Passengers have also been warned there is likely to be some disruption on Sunday morning as rail staff return to work.

More on Rail Strikes

Delegates travelling to the Conservative Party conference this weekend and runners and spectators trying to get into London in time for the start of the marathon on Sunday are likely to be frustrated by the strike.

‘Govt must lift shackles from train companies’

Mick Whelan, general secretary of Aslef, said his members are increasingly angry at the lack of progress in the long-running dispute over pay, jobs and conditions.

“We don’t want to be on strike but this dispute will continue until the government lifts the shackles from the train companies,” he said.

“The message I am receiving from my members is that they want more industrial action, so I think more strikes are inevitable.”

Another strike by Aslef will be held on Wednesday, while RMT members will walk out again on 8 October, and again on 10 October in Scotland.

Andrew Haines, Network Rail’s chief executive, said: “Despite our best efforts to compromise and find a breakthrough in talks, rail unions remain intent on continuing and co-ordinating their strike action.

“This serves only to ensure our staff forgo even more of their pay unnecessarily, as well as causing even more disruption for our passengers and further damaging the railway’s recovery from the pandemic.”

‘Unnecessary and damaging’

Daniel Mann, director of industry operations at Rail Delivery Group, described the strikes as “unnecessary and damaging”.

“It is particularly disheartening that this weekend’s strike will hit the plans of thousands of runners who have trained for months to take part in the iconic London Marathon,” he said.

“That will also punish the many charities, large and small, who depend on sponsorship money raised by such events to support the most vulnerable in our community.

“While we have done all we can to keep some services running, passengers should only travel by rail if absolutely necessary.”

Meanwhile, Royal Mail workers will mount picket lines outside Royal Mail delivery and sorting offices again in a continuing row over pay and conditions.

Read more: Royal Mail strikes – When are staff walking out and what’s affected?

Members of the Communication Workers Union (CWU) walked out on a 48-hour strike on Friday, hitting deliveries of post across the country.

Talks between the union and Royal Mail were held on Thursday but there was no sign of any progress being made and the CWU is planning to step up industrial action in the coming weeks.

A further 19 days of strikes have been announced on different days throughout October and November in a major escalation of the dispute.