The Duke & Duchess OF Cambridge And Prince Harry Celebrate World Mental Health Day At The London Eye With Heads Together

LONDON, UNITED KINGDOM - OCTOBER 10: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Prince Harry attend the World Mental Health Day celebration with Heads Together at the London Eye on October 10, 2016 in London, England. (Photo by Max Mumby/Indigo/Getty Images)