After playing alongside his brother Prince Harry, he said of his son at a presentation ceremony: "He likes to move around a lot, he wriggles a lot, he keeps us on our toes."
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Cloud and outbreaks of rain will ease away eastwards during the morning, clearing the east coast around midday with sunny spells developing.
Police and emergency services are attending the scene.
Rebel-held east remains at risk while the pumping station supplying the western part of the city is once again in operation.