As HM the Queen turns 95, Alexander Armstrong is on a royal road trip of a lifetime.
He’s travelling across the country to meet HM the Queen’s cousins - who’ll share what it means to be part of this extraordinary family.
With first-hand anecdotes, private letters and personal memorabilia, this is a rare glimpse into royal life.
Using the monarch's vast family tree as his road map, Alexander meets relatives from many branches of the her family- from the ancient Royal lineage of the Mountbatten dynasty, to the Queen Mother’s Bowes Lyon side - and an international princess.
But with such a huge family, how many of us could also be related to HM the Queen And are there cousins out there who don’t yet know they have a place in the Royal family tree?