NETWORK Rail workers are to stage two strikes next month after a new pay offer was rejected.
Members of the Rail, Maritime and Transport (RMT) union will walk out for 24 hours from 5pm on June 4 and for 48 hours from the same time on June 9.
The workers, including signallers and maintenance staff, will also ban overtime from June 6-12.
A planned strike over the bank holiday was suspended after Network Rail tabled a fresh pay offer.
But a meeting of RMT reps rejected the improved deal, leading to fresh strikes being announced.
The industrial action is expected to cause widespread disruption to rail travel, sparking travel chaos across the country.