Watch Secrets Of A Royal Retreat: Sandringham

This True Royalty Original show reveals the secrets, past and present, of the Sandringham Estate, where the Royal Family traditionally spend Christmas. Although the Estate was only acquired by the Royal Family in the 19th century, it has witnessed its fair share of history - with Sandringham House as the place where King George V received a lethal injection as well as the location where the late Diana, Princess of Wales threw herself down the stairs. Host Laurence Llewelyn-Bowen is joined by royal historians, Professor Kate Williams and Gareth Russell who unlock the mysteries of this much-loved countryside retreat.