Who Do You Think You Are?
A British genealogy documentary series in which celebrities trace their ancestry, discovering secrets and surprises from their past.
Cast spotlight
Jump into full cast pages for bio, socials, and recent work.
Season 1
10 episodes
Premiered Oct 12, 2004
Season 2
6 episodes
Premiered Jan 11, 2006
Season 3
8 episodes
Premiered Sep 6, 2006
Season 4
7 episodes
Premiered Sep 6, 2007
Season 5
8 episodes
Premiered Aug 14, 2008
Season 6
11 episodes
Premiered Feb 2, 2009
Season 7
9 episodes
Premiered Jul 19, 2010
Season 8
10 episodes
Premiered Aug 10, 2011
Season 9
10 episodes
Premiered Aug 15, 2012
Season 10
10 episodes
Premiered Jul 24, 2013
Season 11
10 episodes
Premiered Aug 7, 2014
Season 12
10 episodes
Premiered Aug 13, 2015
Season 13
10 episodes
Premiered Nov 24, 2016
Season 14
10 episodes
Premiered Jul 6, 2017
Season 15
8 episodes
Premiered Jun 6, 2018
Season 16
8 episodes
Premiered Jul 22, 2019
Season 17
4 episodes
Premiered Oct 12, 2020
Season 18
7 episodes
Premiered Oct 12, 2021
Series 19
5 episodes
Premiered May 26, 2022
Series 20
9 episodes
Premiered Jun 1, 2023
Series 21
7 episodes
Premiered Aug 15, 2024
Series 22
8 episodes
Premiered Apr 22, 2025
Series 23
8 episodes
Premiered May 26, 2026
Ep 1Bill Oddie
Bill Oddie is the first celebrity to undergo the family tree search, as he endeavours to find out more about his mother, who was institutionalised when he was a child.
Ep 2Amanda Redman
Actress Amanda Redman explores her roots.
Ep 3Sue Johnston
Actress Sue Johnston explores her roots.
Ep 4Jeremy Clarkson
Jeremy is determined to find out if his mother was descended from the Kilner Jar people, and if they were, where all the money had gone.
Ep 5Ian Hislop
Ian finds out more about the part his grandfathers played in the wars of the 20th Century.
Ep 6Moira Stuart
Moira Stuart's family tree exploration takes from the Highlands of Scotland to the West Indies.
BBC One
GB
BBC Two
GB
