William, Kate and Harry will speak at a Heads Together event on the Southbank next Monday.
This year’s theme for World Mental Health Day focuses on the importance of psychological and mental health first aid for all.
… Later in the day, the Eye will turn purple in support of World Mental Health Day.
The global Light Up Purple drive was set up in memory of Canadian teenager Amanda Todd, who killed herself in 2012.
The 15-year-old brought the problem of cyber bullying to mainstream attention after she posted a video on YouTube in which she told her story with handwritten signs.