Patients dialling 999 in a heatwave could have to wait for temperatures to drop before an ambulance arrives under union plans to stop crews working in hot weather

Unison says many emergency workers are expected to work in conditions 'harmful to their health' and wants NHS trusts to do more to protect members during increasingly hot summers. Unison says many emergency workers are expected to work in conditions 'harmful to their health' and wants NHS trusts to do more to protect members during increasingly hot summers.