Thousands of ambulance workers are to stage fresh strikes in the coming weeks in the bitter dispute over pay and staffing.
The GMB said more than 10,000 of its members, including paramedics, emergency care assistants, call handlers and other staff, will walk out on February 6 and 20, and March 6 and 20.
In addition, workers at West Midlands ambulance service will strike on January 23 and GMB members at North West Ambulance Service will strike on January 24.