Sir Simon Bose-Lyon, the cousin of Queen Elizabeth II, shared a video of the Queen and her sister Princess Margaret in a private family photo album as children. Simon Bow, 89

Sir Simon Bose-Lyon, the cousin of Queen Elizabeth II, shared a video of the Queen and her sister Princess Margaret in a private family photo album as children.

Sir Simon Bose Lyon, 89, is the Queen's cousin, and the eldest sister of his father, Sir David Bose Lyon, is the Queen's mother.

When he was a child, Simon's father often took him to visit Lilybet, and when she was a child, the queen was called Lilybet.

Sir Simon shared a selection of photos from his family photo album with BBC reporters.

The first from the right is the Queen's mother, and the second from right is Sir Simon's father

Figure 234 is the Queen and her sister Princess Margaret

Picture 5 is the queen in a stroller parked in the aisle

Sir Simon shows me a wall marked with the height of the queen and her sister when they grew up.