Recently declassified documents reveal an unseen side to the Queen and Prince Philip, exploring the key personal events that have shaped their public and family lives. The programme examines the end of Philip's high-flying naval career and clashes with the palace old guard, Princess Margaret's turbulent love life, and Prince Charles being bullied at school, and questions the personal price the Queen paid in her approach to each fresh challenge.

The story of Anthony Blunt, royal appointed art expert and KGB spy, who worked as Surveyor of the Queen's Pictures for 27 years. The programme examines how he was previously employed by George VI to loot art treasures from Germany in the aftermath of the Second World War, and that despite Blunt's protestations of loyalty to the monarchy, classified documents have since revealed that he provided damaging information about the royal family to his Soviet employers.

The Queen has worked with - and had confidential weekly meetings with - 14 prime ministers. Does her experience influence political decisions? And what happened when she and her PMs clashed?