Today also marks the first Christmas since the death of the Queen in September, aged 96.
The family will attend a morning service at St Mary Magdalene Church, greeting fans before sitting down to a family dinner with turkey and the usual festive trimmings.
The King and Camilla are expected to be joined by the Prince and Princess of Wales and their children George, Charlotte and Louis, the Princess Royal and her family, and the Earl and Countess of Wessex and their children.
It is understood that the Duke of York and his former wife Sarah, Duchess of York, are on the estate, but it is not known if Andrew will make a public appearance.
The 62-year-old’s reputation has taken a beating since he settled a civil sex case out of court.
Charles is expected to reflect on the loss of his mother and her legacy.
In a nod to his long-held commitment to the environment, the King is pictured standing in front of a large Christmas tree, decorated with pine cones and sustainable ornaments made of paper and glass.
It is a change of scene from the messages recorded by the Queen, where she would traditionally be seated and surrounded by photos of her family.
No photos for the King this year – but there are floral arrangements in the background using English foliage of holly, ivy, and red skimmia.