William and Kate are pictured sitting on a bail of hay with their children in the image from their festive card sent to friends, associates and their organisations and charities.
Prince George, aged seven, Princess Charlotte (5) and two-year-old Prince Louis are pictured smiling as they sit with their parents.
It was the latest royal commission for Mr Porteous, who has taken a number of photographs of the Cambridges in recent years, including capturing behind the scenes moments from Louis’ christening.
