The Duke of Cambridge said although the moment he and his wife left the hospital with their newborn son was daunting, "We were happy to show him off to whoever wanted to see him".
Prince William said the last few weeks have been "a very different emotional experience" and "something I never thought I would feel myself."
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Another cold, frosty and foggy night for many. Northern and western areas will see thickening cloud, patchy rain and milder temperatures.
Temperatures have already plunged to -12C in some parts of the UK this winter - but Thursday could be the coldest day yet.