Around 12 million people in East Africa are at risk of starvation because of a shortage of food, while a state of famine has been declared in Somalia.
William and Kate are set to visit Unicef’s emergency supply centre in Copenhagen: the UK is giving £200 million in aid to East Africa, £72 million of which has been raised through public donations.
The Duke and Duchess will visit the Unicef warehouse with the Crown Prince and Crown Princess of Denmark, before touring a British Airways Boeing 747 before it leaves with 45 tonnes of aid, bound for East Africa.
British Airways loaned the 747 to Unicef so that they could get aid to East Africa, which will be its second flight to the region.
The airline's chief executive, Keith Williams said, "We're delighted the Duke and Duchess of Cambridge will be seeing the flight off."
David Bull, executive director of Unicef UK, said that the supplies would help to save the lives of malnourished children all across East Africa. Somalia, Kenya, Ethiopia and Djibouti are experiencing the worst drought in 60 years, resulting in severe food shortages across the whole region.