At least four ambulance services and two hospital trusts have declared critical incidents as NHS services around the country face “unprecedented” pressure.
North East Ambulance Service, South East Coast Ambulance Service, the East of England Ambulance Service and the Yorkshire Ambulance Service have all moved to the status as staff work to respond to calls.
It comes as some Brits are being told to get taxis or make their own way to A&E with the mass walkout set to cause major disruption.