[1/2] An NHS logo is displayed outside a hospital in London, Britain May 14, 2017.
Britain's state-run National Health Service (NHS) is braced for a wave of unprecedented industrial action this winter, with up to 100,000 nurses due to take strike action on Dec. 15 and 20 for the first time in their union's 100-year history.
"No one in the NHS takes strike action lightly, today shows just how desperate they are," GMB National Secretary Rachel Harrison said.
The union said it would meet in the coming days to discuss potential strike dates before Christmas.
Thousands of health workers, including call handlers and paramedics, represented by the Unison trade union are also set to take industrial action after voting in favour of strikes.