TV series
A British genealogy documentary series in which celebrities trace their ancestry, discovering secrets and surprises from their past.
Availability
Checked Jul 22, 2026
Who Do You Think You Are? premiered October 12, 2004. We don't have a confirmed streaming, rental or purchase option yet.
A British genealogy documentary series in which celebrities trace their ancestry, discovering secrets and surprises from their past.
Choose an episode, then use the watch options above for the show.
Episode 1
'Harry Potter' star Daniel Radcliffe discovers that the Hatton Garden robbery of his great-grandfather’s jewellery business was far more dark and dramatic than he ever imagined, while an unseen cache of his great-great-uncle’s letters reveals a heart-wrenching First World War love story.
Guest stars Daniel Radcliffe
Episode 2
Actor Naomie Harris’s dramatic discoveries in this episode inspire her to anger, sadness and tears of joy. On a journey from Trinidad to Grenada to Jamaica, Naomie exposes her four-times-great grandfather’s involvement in the exploitation of so-called 'liberated Africans' shortly after the abolition of slavery, is delighted to discover the identify of her African five-times-great grandmother, and, in nearer generations, uncovers a family story of tragic poverty in Jamaica’s capital, Kingston.
Guest stars Naomie Harris
Episode 3
In a first for the series, father-and-son comedy double-act Jack and Michael Whitehall join forces to investigate their family tree.
Guest stars Jack Whitehall, Michael Whitehall
Episode 4
Oscar-winning actor Kate Winslet follows a rumour of Scandinavian ancestry on her mother's side of the family and is delighted to find that she has Swedish heritage.
Guest stars Kate Winslet
Episode 5
Canadian comedian Katherine Ryan’s investigation of her family history leads her to a Methodist minister and his family in colonial Nova Scotia, cod traders in Newfoundland, and eventually to her English roots in Dorset.
Guest stars Katherine Ryan
Episode 6
Paul Merton traces the life of his maternal grandfather and discovers that he was involved in some of the key events that led to Irish independence in the 1920s.
Guest stars Paul Merton
Episode 7
Sharon Osbourne uncovers the difficult circumstances of her mother’s and grandmother’s lives, and is stunned to learn that her great-grandmother was born in the US.
Guest stars Sharon Osbourne
Episode 8
Former TOWIE star Mark Wright discovers that his ancestors included an Andalucian master swordsman and a Spaniard who was burned at the stake during the Inquisition.
Guest stars Mark Wright
Episode information updated Jul 24, 2026
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Angela GriffinSelf - Narrator
David BaddielSelf
Amanda RedmanSelf
Robert LindsaySelf
David DickinsonSelf
Ian HislopSelf
Jeremy ClarksonSelf
Vic ReevesSelf
BBC OneUnited Kingdom
BBC TwoUnited Kingdom
Wall to WallUnited Kingdom