Season 1

10 episodes · Oct 12, 2004

Season 2

6 episodes · Jan 11, 2006

Season 3

8 episodes · Sep 6, 2006

Season 4

7 episodes · Sep 6, 2007

Season 5

8 episodes · Aug 14, 2008

Season 6

11 episodes · Feb 2, 2009

Season 7

9 episodes · Jul 19, 2010

Season 8

10 episodes · Aug 10, 2011

Season 9

10 episodes · Aug 15, 2012

Season 10

10 episodes · Jul 24, 2013

Season 11

10 episodes · Aug 7, 2014 · 8.0

Season 12

10 episodes · Aug 13, 2015

Season 13

10 episodes · Nov 24, 2016 · 8.0

Season 14

10 episodes · Jul 6, 2017

Season 15

8 episodes · Jun 6, 2018 · 8.0

Season 16

8 episodes · Jul 22, 2019

Sixteenth series of the BAFTA-winning series

Season 17

4 episodes · Oct 12, 2020

Season 18

7 episodes · Oct 12, 2021

Series 19

5 episodes · May 26, 2022

Series 20

9 episodes · Jun 1, 2023

Series 21

7 episodes · Aug 15, 2024

Stars delve into their family history to find moving, funny and extraordinary stories.

Series 22

8 episodes · Apr 22, 2025

Series 23

8 episodes · May 26, 2026