WORKERS at beleaguered Northern Rail are to stage another wave of strikes against the company’s plans to remove safety-critical guards from trains.

The firm’s operations are already in chaos because of its bungled introduction of new timetables, which has seen the number of cancellations and delays soar.

Now rail union RMT has accused the firm of planning to “shred the safety culture in the same way that they have shredded the timetables.”