Chasers Anne Hegerty and Shaun Wallace set off on a quest to discover where they come from and unearth secrets from their past in a life changing and emotional voyage of discovery.

Olympic legends Torvill and Dean embark on a journey that brings them even closer, if that's possible. Chris discovers living relatives on his mum's side, and for Jayne, the origin of her sporting prowess is revealed by a connection to West Ham.

Part two of two. Anthony McPartlin and Declan Donnelly embark on a journey to New York to follow the bloodlines of their mothers using DNA analysis and genealogy. There is a surprise for Dec as he finds out he has close family he never knew existed, while Ant's history takes him to the United Nations. After a whirlwind tour of the US, it's back to Ireland to investigate a family secret that Ant's family has been trying to unlock for years.

In episode one of this two part special, Ant and Dec take on their most personal journey yet, uncovering their family histories using a combination of DNA and genealogy.

Actors Dame Maureen Lipman and Rula Lenska, who met on the set of Corrie, come together to embark on a journey to uncover their family history, despite their very different backgrounds.

Comedians and best mates, Rob Beckett and Romesh Ranganathan, go on a road trip to find out about their family history using DNA and genealogy.

Daytime queens Kate Garraway and Alison Hammond embark on a road trip to find out about their family histories using a mix of DNA and genealogy.

Old pals and fellow comedians, Joel Dommett and Tom Allen delve into their family histories as they take a road trip around the UK.

Two Gavin and Stacey faves - Larry Lamb and Alison Steadman - embark on a road trip to find out their family history through DNA and genealogy.

Actors John Simm and Philip Glenister don't expect some news that a DNA test reveals about John's dad while delving into their family histories.