Thousands of nurses and ambulance workers will strike on the same day in a major escalation of NHS unrest.
The GMB announced that more than 10,000 blue light workers in England will walk out on February 6 and 20, and March 6 and 20, in a fraught dispute over pay.
Workers at West Midlands ambulance service will also strike on January 23, with GMB members at North West Ambulance Service will strike on January 24.