NHS Direct has told ITV News they are investigating one "unexpected death" after a patient in the West Midlands contacted its 111 helpline service.
NHS Direct said of the nine contracts it is currently operating, it is investigating seven "potentially serious" incidents related to calls to the 111 service.
More top news
A band of heavy, thundery showers continues to move northwards through this evening, dying away overnight.
The Duke of Cambridge also laid a wreath to honour the victims before kick-off.
The mother of one of the Manchester attack victims has told of the distressing moment she found her daughter being treated after the attack.