Plot: It's Christmas, and Countryfile has received a very special invitation to visit Highgrove Gardens, which surround the private residence of Their Majesties King Charles III and Queen Camilla. Matt Baker, Margherita Taylor and Adam Henson meet staff from His Majesty’s charity The King’s Foundation, who manage Highgrove and transform it into a festive wonderland each Christmas, all while staying true to His Majesty’s passion for nature and sustainability