RMT members working on rail services which pass through Carlisle have voted for strike action following a ballot.
Scotrail and Caledonian Sleeper workers were separately balloted after rejecting pay offers from both companies.
Workers at Scotrail returned an 85 per cent 'yes' vote for strike action on a 64 per cent turnout.
And Caledonian Sleeper members produced a 90 per cent yes vote on a 66% turnout.
The union said that it will be speaking to both employers in order to come to a negotiated settlement.
READ MORE: Cumbrian RMT union rep welcomes repeal of anti-strike law
RMT general secretary Mick Lynch said: "I congratulate RMT members in Scotrail and Caledonian Sleeper for this fantastic ballot result.
“Talks with both sets of employers will be convened in a bid to resolve this dispute."
A Scottish Government spokesman said: “This is a disappointing outcome, particularly in light of the fair and affordable offer ScotRail has made and is still under discussion through ongoing pay talks.”
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