Season 1
2004•10 episodes
Who Do You Think You Are?
A British genealogy documentary series in which celebrities trace their ancestry, discovering secrets and surprises from their past.
DocumentaryFamily
Seasons
24 seasons · 195 episodes
Season 2
2006•6 episodes
Season 3
2006•8 episodes
Season 4
2007•7 episodes
Season 5
2008•8 episodes
Season 6
2009•11 episodes
Season 7
2010•9 episodes
Season 8
2011•10 episodes
Season 9
2012•10 episodes
Season 10
2013•10 episodes
Season 11
2014•10 episodes
Season 12
2015•10 episodes
Season 13
2016•10 episodes
Season 14
2017•10 episodes
Season 15
2018•8 episodes
Season 17
2020•4 episodes
Season 18
2021•7 episodes
Series 19
2022•5 episodes
Series 20
2023•9 episodes
Series 21
2024•7 episodes
Stars delve into their family history to find moving, funny and extraordinary stories.
Series 22
2025•8 episodes
Series 23
2026•8 episodes
Specials
2007•2 episodes