In video: Harry has not asked William about best man role yet

The Duke of Cambridge says Prince Harry has yet to ask him to be his best man at his wedding to Meghan Markle.

William joked that the matter could be "a sensitive issue" as he met volunteers at the Campaign Against Living Miserably (Calm), which works to change culture around masculinity and help men who are at risk of suicide.

Harry, 33, and his American actress fiancee, 36, are due to marry in May at Windsor Castle.