Princess Diana and Winston Churchill's mental health experiences are to be used to teach children how to avoid 'the black dog' of depression in school lessons.

They are among a number of figures who have spoken out about their own struggles and feature in a scheme aimed at reducing the stigma around mental health.

Princess Diana spoke candidly about her depression, her struggles with the eating disorder bulimia and self-harming in a 1995 interview with the BBC's Panorama programme.