Prince Harry quipped that his brother William will be envious that he has managed to escape from a "screaming" Prince George.
Speaking as he prepares for a 200-mile polar trek in Antarctica, Harry said, "I think he's just quite jealous I managed to get away from a screaming child."
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Three Court of Appeal judges are analysing the latest stage of a life-support treatment dispute.
Ms Markle joined Harry and William at services in London to honour the fallen.
Thunder and hail at times across the UK. Showers becoming confined to the northwest overnight.