Season
- Season 0 2007-07-11
- Season 1 2004-10-12
- Season 2 2006-01-11
- Season 3 2006-09-06
- Season 4 2007-09-06
- Season 5 2008-08-14
- Season 6 2009-02-02
- Season 7 2010-07-19
- Season 8 2011-08-10
- Season 9 2012-08-15
- Season 10 2013-07-24
- Season 11 2014-08-07
- Season 12 2015-08-13
- Season 13 2016-11-24
- Season 14 2017-07-06
- Season 15 2018-06-06
- Season 16 2019-07-22
- Season 17 2020-10-12
- Season 18 2021-10-12
- Season 19 2022-05-26
- Season 20 2023-06-01
- Season 21 2024-08-15
Who Do You Think You Are? - Season 1 Episode 1 Bill Oddie
6.57 60 minutes 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.
