COMMUTERS face more travel misery as London Overground staff vote to strike - hours after train drivers walked out.
More than 300 members of the RMT union will down tools from midnight on Monday February 19 for 24 hours.
And there will be walkouts for 24 hours from midnight on Monday March 4.
Among workers taking action will be security, station, revenue and control staff.
RMT chief Mick Lynch said: "Our members are furious that they have been given a below inflation pay offer and want to see an improvement that represents the value they bring to the company."
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The rail baron also threatened commuters with further strikes - saying the RMT were "more than prepared" to strike for a "sustained period".
The latest walkouts follow the start of over a week of disruption by the train drivers' ASLEF union.
A combination of strikes and a ban on overtime working are taking place on separate days between Monday January 29 and Tuesday Ferbruary 6 February.
The action affects 17 train companies and there will be no services at all on some days.
Others will see services start later and finish earlier than usual, typically running between 7.30am and 6.30pm.
Drivers are on strike at Southeastern, Southern/Gatwick Express, Thameslink, South Western Railway and Great Northern.
Strikes have rocked Britain's rail network since June 2022.