Firemen will carry out blood pressure and heart checks under a major NHS drive to prevent early deaths.
They will conduct medical tests during fire safety inspections of homes – and refer patients to doctors if the readings are too high.
Supermarkets, offices and schools will also be instructed to install blood-pressure machines to allow the public to test themselves.
The initiative hopes to prevent as many as 9,000 heart attacks and 14,500 strokes a year.
It is focused on detecting conditions such as high blood pressure, high cholesterol and atrial fibrillation, where the heart beats very fast or erratically.