The RMT union has announced two rail strikes spanning huge swathes of the south and the north of England .
Engineers on Southern Rail plan to strike for five days from 12 July, claiming there has been a “comprehensive breakdown” in relations with bosses.
And workers on Northern Rail have voted to walk out over job security and safety issues.
RMT said 1,500 members were involved in the vote amid anger over what it said was the removal of permanent posts and the creation of zero-hour jobs via a contract with a security company, cuts to booking offices and attacks on the role and responsibility of train guards.
The union said Northern Rail had also given no commitment that there will be no compulsory redundancies beyond the end of its current franchise in February next year.
RMT general secretary Mick Cash accused the company of riding “roughshod” over its efforts to negotiate.
“We therefore had no option but to ballot all staff for action to force the company to take these issues seriously and the members have now voted decisively for action.
“That mandate will now be considered by the union.”
Northern Rail – a 50:50 joint venture between Serco Group and Abellio – employs 4,900 workers and runs 2,500 services every weekday.
RMT warned that the planned strike by engineers on Southern Rail would hit services.