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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First Minister Carwyn Jones revealed his plans in his speech at the Welsh Labour conference.
Army personnel have praised Prince Harry for changing lives ahead of this year's Invictus Games in Sydney.
Dry and sunny for most, however, some isolated heavy and thundery showers will develop.