Mick Lynch has warned industrial action across the rail network will continue beyond May unless the RMT receives a reasonable offer from the UK Government.
Members of the union are striking at Network Rail and 14 different rail operators this week, with ScotRail services hugely disrupted.
Speaking from a picket line at Euston station in London, Lynch said that the strikes "are likely to go ahead if there’s no offer that we can work on.
“We would like to get into a situation where we’re negotiating constantly with the companies and where we didn’t have to have strike action, and then work up a settlement that our members could vote on and accept.
“But if we don’t get that there will have to be more action, and we’ve got a mandate that runs through to May this year, and if we have to go further, that’s what we’ll need to do. We don’t want that, though.”
