London Underground staff will stage a 24-hour strike starting on Sunday evening after talks with managers broke down, the RMT union has said.
Members of the RMT and the Transport Salaried Staffs Association (TSSA) have staged three strikes in recent months over threats to cut about 800 jobs.
Both sides met at the conciliation service Acas to discuss a resolution.
But the failure to reach a deal leaves the prospect of widespread disruption on the Tube network on Monday.
via BBC News