When the Duke and Duchess of Cambridge return from their overseas trip, their children could rightfully expect an armful of gifts and a happy-to-be home cuddle. Instead, they may be in for a rude awakening.

The Duke of Cambridge has spoken of how he had been inspired by hardy Swedish children, who play outside in all weather and are all the healthier for it.

In a speech detailing how the British could learn from the Swedish people, the Duke said he would take home the lesson of how youngsters are "actively encouraged" to go out in the cold.

Prince George, four, and Princess Charlotte, two, are at home at Kensington Palace while their parents spend four days in Scandinavia.

The Duke and Duchess met hundreds of schoolchildren, some bundled up in thick coats and gloves and others braving the sub-zero temperature in short sleeves, waving flags in the playground for their arrival.