Prince Harry joined the loved ones of Britons killed in terror attacks in Tunisia at a special memorial service at Westminster Abbey.
Harry laid a wreath at the Innocent Victims Memorial on behalf of his grandmother the Queen as he gathered with survivors and families affected by the two atrocities in 2015.
He also delivered a reading during the central London service, which was conducted by the Dean of Westminster and attended by Prime Minister David Cameron.
Members of the public looked on outside the Abbey as Harry, wearing a dark blue suit, laid the wreath of white flowers before rising and bowing his head in a moment of silent reflection.
Thirty Britons were among 38 people massacred in the Tunisian resort town of Sousse in June last year - the worst incident of terrorism involving British people since the July 7 attacks in London in 2005.
Gunman Seifeddine Rezgui targeted holidaymakers on the beach and in a hotel before being shot dead by security forces. Terror group Islamic State claimed responsibility.