Who Do You Think You Are?

Actress and national treasure Julie Walters follows her roots back to rural Ireland on the trail of her great-grandfather.

Actor Brian Blessed has always loved his unusual name - but has no idea where his Blessed ancestors came from.

Tamzin Outhwaite journeys into her Italian past to uncover the rags-to-riches tale of her great-grandfather Adelmo.

Brendan O'Carroll ditches his alter ego Mrs Brown to turn detective, as he attempts to discover who murdered his grandfather.

Actress Sheridan Smith is keen to know where her musical talent comes from and is soon hot on the trail of her great-great-grandfather.

Bake Off star Mary Berry, still going strong at 79, believes she inherits her energy and drive from her father and sets off on a journey to find out more about his family. Along the way she discovers illegitimacy, bankruptcy, and even more astonishingly, a baker.

Actor Martin Shaw investigates the story of his grandfather, Edwin Shaw, who walked out on his family when Martin's father was just a boy.

Presenter and DJ Reggie Yates grew up knowing very little about his father's side of the family. Reggie sets out on the trail of his grandfather, Harry Philip Yates. His journey takes him to Ghana, where he unravels a complex family history where Ghanaian culture and British colonialism collide.

Scottish comedian and actor Billy Connolly travels to India in the footsteps of his army ancestors and makes an extraordinary discovery.

Twiggy grew up in a close-knit family in London, but her mother told her almost nothing about her relations, not even her grandmother's name.