What mysteries are hidden in old family photographs? Can mouldy old documents reveal secrets, long forgotten by family members? What role does family history play in our daily lives? Can a person know who they really are? Who Do You Think You Are?® is a landmark documentary series chronicling the social, ethnic and cultural evolution of national identities through the personal family histories of prominent celebrities.

During each episode one of Britain’s best-loved celebrities traces their family tree to reveal the surprising, extraordinary and often moving stories of their ancestors. At the same time the series has a more universal purpose: to offer an alternative way of looking at the history of modern Britain and to inspire viewers to consider their family’s contribution to the making of Britain.