Foundlings are people who were abandoned as babies, often in the first hours and days of their lives. Born without a trace, they have had no way to unlock the secrets of their past. But this ground-breaking new 90-minute documentary combines new DNA technology with painstaking detective work, to finally help solve the mysteries of people with unknown beginnings who are desperate for answers. Presented by Davina McCall and Nicky Campbell, the team behind Long Lost Family use an extraordinary new technique to try and identify birth families and find answers for people who have spent decades trying to find out where they came from.

Time is running out for a foundling discovered on a luggage rack in Paddington station, and another woman hopes to understand why she was left next to a church.