Since the programme began in 2011, Long Lost Family has reunited more than 100 people with relatives. In this series, Davina McCall and Nicky Campbell revisit nine of the most extraordinary searches. In the first edition, they catch up with twins Jennifer and Kathleen, who unknowingly lived just three miles from each other in Rotherham before their reunion, and Polly and Steve, a mother and son who had been apart for more than 50 years. Plus, Laura and her half-sister Alison, who were brought together after Laura's mother died.

Sarah Gale enjoyed a happy childhood with two loving adoptive parents, but she'd been desperate to track down her birth mother and been trying to do so for 20 years. The programme found Susan who, after having Sarah, had moved to South Africa in the 1970s and went on to have a son. Three years after being reunited, Davina and Nicky hear how mother and daughter have grown close, and Susan prepares to meet Sarah's adoptive mother Rosemary for the first time. Plus an update on Jeannie Elgar, who met her brother's adoptive sibling Robert, and Stella, who was reunited with daughter Maxine after she made the decision to have her adopted at 18 months old.

This final programme revisits three stories of women reunited with their siblings. Cherry Durbin who was searching for one sister, unexpectedly reunited with two. The three sisters all grew up as only children, so how have they adapted to their new roles as sisters? Maureen Saville was reunited with a brother and sister. Have her siblings been able help her understand why her mother abandoned her as a toddler? Fiona Dunn and her sister Maureen were reunited two years ago and now Fiona has finally met her birth mother Pat whom she had believed was dead.

Last year, Cliff Jardine and Sue Ward discovered that they are half-brother and sister after both applying separately to the show. Previously unaware of each other's existence, they were overjoyed to find a sibling. Since meeting, Cliff and Sue have formed a powerful bond, but they have been rocked to learn that their birth mother has chosen not to have contact with them. After being reunited themselves, Ron Williams and sister Christine are now determined to investigate a family rumour that they may have two more half-siblings. Their mission to solve this mystery launches an incredible new search - one which takes Ron and Christine to the other side of the world.

Episode two catches up with people whose lives have been changed in the most unexpected ways. Just last year Vanda James was stunned when Davina revealed that her long lost brother Kenneth had not only been found, but had undergone gender transition and was now in fact her sister, and called Debbie. We revisit the siblings as they celebrate Debbie's birthday and discover how the reunion has changed the sisters' lives in ways they could never have imagined. In the second of tonight's stories, when Chris and Sue Ellerton came to us searching for the son they had put up for adoption as teenagers, it was a first for Long Lost Family. Never before had we taken on a joint search on behalf of a couple looking together for their child.

Episode three catches up with people whose lives have been changed in the most unexpected ways. In Ireland, we catch up with Peter Gunn, whose joy at his reunion with his birth mother Daphne was short-lived as Daphne soon suffered a serious health scare. We discover how these events inspired Peter to make a life-changing decision with huge implications not only for him, but also for his adoptive mother Miriam. We travel to Barbados with Jade Hartley as she sees her father Tony for the first time since they were reunited. Jade is also nervously anticipating meeting her half-brother and grandmother, as well as a whole new extended Barbadian family. We also catch up with Gillian Carter and her son Mark, whose life has been changed in profound and unexpected ways by meeting his birth mother. As mother and son celebrate Mark's 50th birthday together, they discover an extraordinary coincidence.

Cathie Cutler Evans came to us in 2016 desperate to find her birth mother who had given her up for adoption nearly 50 years before. After uncovered the tragic news that her mum had already passed away, Cathie was reunited with her half-sister Ann in Liverpool. We also catch up with John Ayton, who after being adopted as a baby, had longed to find his father Kenneth. John was reunited with his half-brother Steve in 2017 after facing the difficult news that Kenneth had already passed away.

We revisit three more families who were separated by extraordinary circumstances. Divorced couple Marion and James united in their search to find the son they gave up for adoption as teenagers. Their reunion brought about a dramatic twist that had huge consequences for all of them. Ray went in search of his brother Arthur in 2016, but was shocked to find he had 11 other siblings as well. We also catch up with Laura, who reunited with her Nigerian father Andy and brother Nten.

Deborah spent most of her life wondering about her birth mother, who aged 17 gave Deborah up for adoption as a newborn baby – an adoption that turned out brilliantly. There’s a powerful scene where Deborah brings her two mothers together: they last saw each other when one entrusted her baby to the other 50 years ago in Australia, and they get to say the most heartfelt of thank yous.

A catch-up with Roy David - who went looking for his daughter Cheryl in 2021 - and Maria Costantino, who discovered in 2018 that her birth mother had passed away.

A catch-up with Murray Phillips - who sought his older brother Ricky - and Ann Melbourne and Jean Smith, who were both looking for their birth fathers.